All Wiring Diagrams for Chevrolet Blazer 2001

AIR CONDITIONING

Automatic A/C Wiring Diagram for Chevrolet Blazer 2001

List of elements for Automatic A/C Wiring Diagram for Chevrolet Blazer 2001:

(at a/c accumulator) a/c low pressure switch
(body harness, near blower motor) s118
(body harness, below i/p fuse block) sp201
(dash harness, between breakout to ground splice & breakout to right courtesy lamp)
(dome harness between breakouts to inside air temperature sensor & left sunshade mirror lamp, 5 cm from breakout to sensor)
(engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector)
(engine harness, on cathode side of a/c compressor clutch diode, in breakout to a/c compressor & cutoff switch) s104
(right rear of cylinder head) g117
5 volt ref
5v ref
A/c
A/c comp rly ctrl
A/c compres- sor clutch
A/c compres- sor clutch diode
A/c compressor clutch relay
A/c compressor high pressure switch (on rear of a/c compressor)
A/c cycling sw sig
A/c fuse 10a
A/c request
A/c request sig
A10
Air inlet
Air temperature valve sensor & motor (on top right side of heater)
Ambient air temperature sensor (on right radiator support bracket)
B10
Battery
Blower motor
Blower motor control module (on evaporator case)
Body relay block (behind left side of dash, near i/p fuse block)
C10
C11
C12
C13
C14
C15
C16
C2 underhood fuse block (on top of left front fender)
Class 2
Class 2 data
D10
D11
D12
D13
D14
D15
D16
Data link connector (dlc) (partial) (under left side of dash)
Defogger system
Defrost
Elec actuator drive
Elec actuator fbck
Electric sensor rtn
G104 (left rear of engine compt)
G117 (right rear of cylinder head)
G201 (right side of dash)
G202 (left side of dash)
Gnd
Grd
Ground
Heater
Heater/ defrost
Hot at all times
Hot in run
Hot in run & start
Hvac 1 fuse 21 10a
Hvac control module (center of dash, below radio)
Hvac fuse 30a
Hvac vacuum control solenoid valve (lower rear of heater assy)
I/p fuse block (on left end of dash)
Ign e fuse 10a
Ignition
Illumination
Inside air temperature sensor (in roof over driver's door)
Inside temp sens sig
Interior lights system
Lower disc temp sens
Lower discharge air temperature sensor (on left side of floor air outlet)
Mode 1 drv
Mode 2 drv
Mode 3 drv
Mode 4 drv
Mode 5 drv
Mtr feed
Mtr ret
Nca
Outside temp sens sig
Power mirrors system (automatic day-night mirrors)
Powertrain control module (pcm) (on right front of engine compartment)
Pwm signal input
Pwm signal output
Rdo batt fuse 19 15a
Red
Rr defog
S106
S240 (dash harness, 4 cm from breakout to bcm module connector & breakout to instrument cluster)
S288
S302
Sensor gnd
Solid state
Sp200 (on body harness, center front of dash)
Sp203 (dash harness, in front of ashtray)
Sun load temp sens
Sunload sensor (top center of dash)
Tan
Underhood fuse block (on top of left front fender)
Upper disc temp sens
Upper discharge air temperature sensor (on top front center of dash, behind radio in duct)

Compressor Wiring Diagram, Auto A/C for Chevrolet Blazer 2001

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List of elements for Compressor Wiring Diagram, Auto A/C for Chevrolet Blazer 2001:

(at a/c acumulator) a/c low pressure switch
(engine harness between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
(engine harness, on cathode side of a/c compressor clutch diode, in breakout to a/c compressor & cutoff switch) s104
(right rear of cylinder head) g117
A/c comp rly ctrl
A/c compresor clutch
A/c compressor clutch diode
A/c compressor clutch relay
A/c compressor high pressure switch (on rear of a/c compressor)
A/c cycling sw sig
A/c fuse 10a
A/c request
A/c request sig
C11
Class 2
D12
Hot at all times
Hot in run & start
Hvac control module (center of dash, below radio)
Ign e fuse 10a
Nca
Powertrain control module (vcm) (on right front of engine compartment)
S103 (engine harness, on anode side of a/c compressor clutch diode, in breakout to a/c compressor & cutoff switch)
Sp201 (body harness, below i/p fuse block)
Underhood fuse block (on top of left front fender)

Compressor Wiring Diagram, Manual A/C for Chevrolet Blazer 2001

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List of elements for Compressor Wiring Diagram, Manual A/C for Chevrolet Blazer 2001:

(engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
(right rear of cylinder head) g117
A/c
A/c comp rly ctrl
A/c compresor clutch
A/c compressor clutch diode
A/c compressor clutch relay
A/c compressor high pressure switch (on rear of a/c compressor)
A/c fuse 10a
A/c low pressure switch (at a/c accumulator)
A/c low sw signal
A/c request signal
Bi-level a/c
Blend
D12
Defrost
Diode, in breakout to a/c compressor & cutoff switch) s104
Heat
Heater & a/c controller
Hot at all times
Hot in run
Hot in run & start
Hvac fuse 9 20a
I/p fuse block (on left end of dash)
Ign e fuse 10a
Max a/c
Nca
Off
Powertrain control module (pcm) (on right front of engine compartment)
S103 (engine harness, on anode side of a/c compressor clutch diode, in breakout to a/c compressor & cutoff switch)
Underhood fuse block (on top of left front fender)
Vent

Manual A/C Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Manual A/C Wiring Diagram for Chevrolet Blazer 2001:

(dash harness, between breakouts for radio & bcm connector c3, 8 cm from breakout to radio) s205
(engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
(left rear of engine compartment) g104
(left side of dash) g202
(right rear of cylinder head) g117
(right side of dash) g201
0.26 ohms
0.71 ohms
2.10 ohms
87a
A/c
A/c comp rly ctrl
A/c compressor clutch
A/c compressor clutch diode
A/c compressor clutch relay
A/c compressor high pressure switch (on rear of a/c compressor)
A/c cycling sw signal
A/c fuse 10a
A/c low pressure switch (at a/c accumulator)
A/c request signal
Bi-level
Bi-level a/c
Blend
Blower motor (on right rear of engine compartment)
Blower motor relay (on center rear of engine compartment)
Blower motor resistor (on right rear of engine compartment, on blower module)
Blower switch
D (not used)
D12
Def
Electric actuator (temperature) (on top right side of heater)
Heat
Heater & a/c controller
High
Hot at all times
Hot in park & head
Hot in run
Hot in run & start
Hvac 1 fuse 21 10a
Hvac fuse 30a
Hvac fuse 9 20a
I/p fuse block (on left end of dash)
If equipped
Ign e fuse 10a
Illum (x4)
Illum fuse 12 10a
Low
Max a/c
Med
Mode door switch
Nca
Norm
Off
Pickup
Power mirrors system (automatic day/night mirror)
Powertrain control module (pcm) (on right front of engine compartment)
S103 (engine harness, on anode side of a/c compressor clutch diode, in breakout to a/c compressor & cutoff switch)
S118 (body harness, between breakouts to blower motor & blower motor relay)
S215 (dash harness, in breakout to heater controller connectors, 10 cm into breakout)
S217 (dash harness, in breakout to heater controller connectors, 6 cm into breakout)
Servo amplifier
Sp202 (strapped to body harness, at left center of dash)
Sp203 (dash harness, in front of ashtray)
Switch) s104
Tan
Temp control
Underhood fuse block (on top of left front fender)
Utility
Vent

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams for Chevrolet Blazer 2001

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List of elements for Anti-lock Brake Wiring Diagrams for Chevrolet Blazer 2001:

(under left side of dash) data link connector (dlc)
2.2l
4.3l
A10
A12
Abs fuse 22 10a
Abs fuse 60a
Anti-lock indicator
Axle switch sig
Axle switch signal
Battery
Body control module (bcm) (under dash, on heater case)
Brake fluid level switch (on master cylinder)
Brake fluid lvl sig
Brake warning indicator
Class 2
Computer data lines system
Electronic brake control module (ebcm) (on left front inner fender)
Engine controls system
Except bravada & 2.2l w/o cruise
Front axle indicator switch (on front axle, right of differential)
G106 (behind left headlamp)
G117 (4.3l) (right rear of engine)
G119 (2.2l) (right front of engine) block)
Ground
Hot at all times
Hot in run
I/p fuse block (on left end of dash)
Ignition 3
Instrument cluster
Left front wheel speed sensor
Lf whl spd sens ref
Lf whl spd sens sig
Nca
Powertrain control module (pcm) (on right front of engine compt)
Pump motor
Rdo batt fuse 19 15a
Red
Rf whl spd sens ref
Rf whl spd sens sig
Right front wheel speed sensor
S121 (body harn, near ebcm)
S203
S240
Serial data
Splice pack sp201 (on body harn, behind left side of dash)
Stoplight switch (on brake pedal support bracket)
Tan
Tcc brake switch sig
Underhood fuse block
Underhood fuse block (on top of left front fender)
Vehicle speed signal
Vss

ANTI-THEFT

Forced Entry Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Forced Entry Wiring Diagram for Chevrolet Blazer 2001:

(envoy)
(except envoy)
(utility)
2 door utility pickup w/ au3
4 door utility
A12
B10
B11
Battery
Body control module (under dash, on heater case)
Data
Data link connector (under left side of dash)
Driver door jamb switch
Driver door lock cylinder switch
Drv dr switch
Fr handle sw
Front passenger door jamb switch
Front passenger door lock cylinder switch
G201 (right side of dash)
G202 (left side of dash)
G404 (left rear body corner)
Grd
Horn relay
Horns system
Hot at all times
Ignition key alarm switch
Instrument cluster
Key in ign
Left door handle switch
Left rear side door jamb switch
Liftgate ajar jamb switch
Liftgate sw
Pickup
Rear window wiper cutout & liftglass ajar jamb switch
Right door handle switch
Right rear side door jamb switch
Rr dr sw
S305 (body harn, on breakout to right rear door, on pillar)
S427
S501
S601
S900 (right liftgate harness, 5cm before breakout to rear window washer pump motor)
Security indicator
Sp202 (left center of dash)
Splice pack sp201 (below i/p fuse block)
Splice pack sp203 (near ashtray)
Splice pack sp204 (center of dash)
Tan
Tbc fuse 10a
Theft
Underhood fuse block
Utility

Pass-Key Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Pass-Key Wiring Diagram for Chevrolet Blazer 2001:

2.2l
4.3l
A12
Battery
Body control module (under dash, on heater case)
Data
Data link connector (under left side of dash)
Engine controls system (fuel pump relay)
G202 (left side of dash)
Grd
Hot at all times
Passlock sensor (at ignition switch)
Powertrain control module (on right side of engine compt)
Sensor data
Sensor pwr
Sensor ret
Sp202 (left center of dash)
Splice pack sp201 (below i/p fuse block)
Tbc fuse 10a
Underhood fuse block

BODY COMPUTER

Body Computer Wiring Diagrams for Chevrolet Blazer 2001

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List of elements for Body Computer Wiring Diagrams for Chevrolet Blazer 2001:

(103 or 352)
(524 or 1969)
(envoy)
(others)
12v ref
5v reference
A10
A11
A12
Ambient light sensor (on top left side of dash)
Ambient light sensor sig
Anti-theft system
B10
B11
B12
Battery positive voltage
Body control module (under dash, on heater case)
Class 2 serial data signal
Computer data lines system
Courtesy lamp relay ctrl
Courtesy lamp sw sig
Cruise fuse 3 10a
Door lock ctrl
Door locks system
Door unlock ctrl
Driver door key sw sig
Drl relay ctrl
Engine controls system
Exterior lights system
Flash-to-pass sw sig
Fog lamp relay ctrl
Front fog lamp switch sig
G202 (left side of dash)
Gauges fuse 4 10a
Gmcm serial data
Ground
H (envoy)
Headlamp hi beam relay ctrl
Headlamp off sig
Headlights system
Headlights system (envoy)
Hlp dimmer sw hi beam sig
Horn relay ctrl
Horns system
Hot at all times
Hot in run
Hot in run or start
Hot with headlamp switch in head or park
I/p fuse block (left end of dash)
Ignition 1 voltage
Ignition 3 voltage
Ignition key alarm switch (part of ignition switch)
Instrument cluster system
Interior lamp defeat sw sig
Interior lamp relay coil ctrl
Interior lights system
J (others)
Key in ignition switch
Led dimming signal
Left front door open switch sig
Left front door unlock relay ctrl
Left front turn sw sig
Left seat belt switch sig
Low ref
Park brake switch sig
Park brake warning switch (at base of park brake assembly)
Park lamp relay ctrl
Park lp fuse 5 10a
Pnk
Power distribution system
Power distribution system (rap)
Rap relay coil ctrl
Rear compt lock mtr unlock
Rear doors/lift glass switch
Remote keyless entry circuit
Right front door latch switch sig
Right front turn sw sig
S283
Security system sensor sig
Sp202 (left center of dash)
Splice pack sp200
Tan
Tbc fuse 10a
Tow/hall switch sig
Transmission system
Trunk release relay ctrl
Trunk, tailgate, fuel doors system
Underhood fuse block
Vehicle speed sensor sig
Warning sytems

COMPUTER DATA LINES

Computer Data Lines for Chevrolet Blazer 2001

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List of elements for Computer Data Lines for Chevrolet Blazer 2001:

class 2
(behind right front kick panel) transfer case shift control module
(not used)
A12
Body control module (under dash, on heater case)
Body relay block (behind left side of dash, near i/p fuse block)
C11
Cigar ltr fuse 2 15a
Class 2
Data link connector (dlc) (under left side of dash)
Driver information display module (if equipped)
Driver seat memory module (under left front seat) (if equipped)
Electronic brake control module (ebcm) (on left front inner fender, on brake pressure modulator valve)
Electronic climate control module (w/ auto a/c)
G114 (left rear of engine)
G202 (left side of dash)
Hot at all times
I/p fuse block (on left end of dash)
Inflatable restraint sensing & diagnostic module (under console & carpet, between front seats)
Instrument cluster
Np1 only
Np8 np4
Powertrain control module (pcm) (on right front of engine compartment)
S152
S202 (w/ onstar)
Sp202 (left center of dash)
Splice pack sp201 (left side of dash, below i/p fuse block)
Transfer case shift control module (w/ 4wd) (behind right front kick panel)
Underhood fuse block (on top of left front fender)
Vehicle interface unit (viu) (behind right rear outer panel)
W/ onstar
W/ trip computer

CRUISE CONTROL

Cruise Control Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Cruise Control Wiring Diagram for Chevrolet Blazer 2001:

(on left side of firewall)
2.2l
4.3l
4wd only
A/t
A12
A13
A14
A15
Abs fuse 22 10a
Bare
Body computer system
Body relay block (behind left side of dash)
Brake cutout 1
Brake/clutch signal
C116 (near top right rear of transmission)
Clutch pedal position & cruise control
Cruise control module
Cruise fuse 3 10a
Cruise on/off input
Cruise status
Cut-out switch (clutch pedal support bracket)
Engine controls system (2.2l)
Exterior lights system
G104 (left rear of engine compt)
G114 (left rear of engine)
G117 (right rear of engine)
Ground
Hot in run
I/p fuse block (left end of dash)
Ignition
Instrument cluster system
M/t
Multifunction switch
Off
Powertrain control module (right front of engine compt)
R/a
Resume/accel input
S134
S138 (body harn, left rear of engine compt)
S140
S152
S203
Set sw
Set/coast input
Sp200 (body harn, center front of dash)
Stoplamp switch (brake pedal support bracket)
Underhood fuse block (on top of left front fender)
Vehicle speed input
Vehicle speed sensor (vss) (on rear of transmission)
Vss
Vss high
Vss low

DEFOGGERS

Defogger Wiring Diagram, with Auto A/C for Chevrolet Blazer 2001

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List of elements for Defogger Wiring Diagram, with Auto A/C for Chevrolet Blazer 2001:

(left side of dash) g202
(right rear body corner) g405
(right side of dash) g201
C10
D14
Driver outside rear- view mirror
Electronic climate control module (center of dash, below radio)
Front passenger outside rearview mirror
Ground
Hot at all times
Hot in run
Hot in run & start
Htd mirror fuse 10a
Hvac 1 fuse 21 10a
I/p fuse block (on left end of dash)
Ign e fuse 10a
Ignition 3 voltage
Nca
Power distribution system
Rear defogger relay control
Rear window defogger grid
Rear window defogger relay
Rr defog fuse 30a
S501
S601
Solid state
Splice pack sp203 (front of ashtray)
Splice pack sp204 (center of dash)
Underhood fuse block (on top of left front fender)

Defogger Wiring Diagram, with Manual A/C for Chevrolet Blazer 2001

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List of elements for Defogger Wiring Diagram, with Manual A/C for Chevrolet Blazer 2001:

(left side of dash) g202
(right rear body corner) g405
(right side of dash) g201
Driver outside rear- view mirror
Front passenger outside rearview mirror
Hot at all times
Hot in run
Hot in run & start
Htd mirror fuse 10a
Hvac 1 fuse 21 10a
Hvac control assembly
I/p fuse block (on left end of dash)
Ign e fuse 10a
Ill
Interior lights system
Nca
On led
Rear window defogger grid
Rear window defogger relay
Rr defog fuse 30a
S217
S501
S601
Splice pack sp203 (front of ashtray)
Splice pack sp204 (center of dash)
Timer circuit
Underhood fuse block (on top of left front fender)
Utility vehicles only

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Electronic Suspension Wiring Diagram for Chevrolet Blazer 2001:

(not used)
Automatic level control (alc) air compressor (in rear quarter of vehicle)
Automatic level control (alc) sensor (on frame rear cross- member)
Automatic level control (alc) timer relay (in right rear quarter panel)
Automatic level control inflator air switch (in right rear quarter panel)
Automatic level control solenoid valve (in right rear quarter panel)
Batt
C1 a10
Comp
D9 c1
G999 (left "d" pillar)
Ground
Hot at all times
Hot in run or start
Ign e fuse 10a
Ign reset
Ld lev fuse 25a
Not used
Off
Pnk
S470
S471
S472
S473
S474
S475
Timing circuit
Underhood fuse block (on top of left front fender)
Vent

ENGINE PERFORMANCE

4.3L

4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Blazer 2001:

(body harn, near wiper breakout)
(in distributor)
12v ref
3-2 sol
469 or 470
5 v ref
5v ref
Abs fuse 22 10a
Battery
C red
Camshaft position sensor
Ckp sig
Class 2 data
Clstr fuse 11 10a
Clutch pedal position switch (on clutch pedal support bracket)
Cmp sens
Cpp sw
Crankshaft position sensor (front of engine near crankshaft pulley)
Ect sens
Egr pos
Egr rtn
G114 (left rear of engine)
G117 (right rear of engine)
Ground
Heated oxygen sensor (bank 1 sensor 1) (in left exhaust pipe, front of converter)
Heated oxygen sensor (bank 2 sensor 1) (in right exhaust pipe, front of converter)
Ho2s
Ho2s high
Ho2s low
Hot in off, run or start
Hot in run
I/p fuse block
Ign 1
Inj 1
Inj 2
Inj 3
Inj 4 ctrl
Inj 5
Inj 6
Knock sensor (top rear of engine)
Ks sig
Low ref
Off/crk/run
P/n
Park/neutral position & back-up lamp switch (left side of transmission)
Pnk
Powertrain control module (right front of engine compt)
Red
S106
S116
S138
S151
S152
S203
Stoplamp switch (on brake pedal support bracket)
Tan
Tcc sw
Trans sig a
Trans sw b
Trans sw c
Trans sw p

4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Blazer 2001:

(in exhaust, behind catalytic converter)
1-2 shift sol
2-3 shift sol
3-2 control sol
A10
Automatic transmission
Automatic transmission fluid pressure manual valve position switch
B10
C10
Central sequential fuel injection
D10
D2 sw
D3 sw
D4 sw
E10
Ecm i fuse 15a
Eng i fuse 10a
Evaporative emission canister purge solenoid (top right rear of engine)
Evaporative emission canister vent solenoid (rear of fuel tank)
Exhaust gas recirculation valve (top front of engine)
Fuel inj
Heated oxygen sensor (bank 1 sensor 2)
Hot in run or start
Lo sw
Oxysen fuse 20a
Pnk
Pressure control solenoid valve
Red
Rev sw
S150
Tan
Tan b
Tcc pwm sol
Tcc sol
Transmission fluid temperature sensor
Under- hood fuse block

4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Blazer 2001:

(in air jumper harn, 5 cm from breakout to engine harn)
(not used)
(under left side of dash) data link connector
12v in
A/c system
A11
A12
Air fuse 30a
Air relay
Air sol fuse 10a
Battery fuse 175a
Body control module (under dash, on heater case)
D (p/u)
Ecm b fuse 20a
Eng spd
Engine coolant temperature sensor (left cylinder head, between two rear spark plugs)
Fuel level sensor (w/ fuel pump) (fuel tank)
Fuel pump prime connector
Fuel pump relay
Fuel tank pressure sensor (top of fuel tank)
Fuse holder (right of radiator)
G101 (right front of engine compt)
G114 (left rear of engine)
G416 (left rear crossmember)
G416 (left rear frame rail)
Gnd
Hot at all times
Hot in run and start
Ign e fuse 10a
Instrument cluster
Instrument cluster system
Intake air temperature sensor (in fresh air intake duct)
M (utility)
Maf sig
Manifold absolute pressure sensor (top center of engine)
Mass airflow sensor (maf) (on air intake assy)
Mil input
Pick-up
Pnk
Red
S105
S152
Secondary air injection reactor fuse block (next to battery)
Secondary air injection reactor pump (lower right front of engine compt)
Splice pack 201 (left side of dash)
Splice pack 422/423 (rear frame rail)
Tan
Tan b
Throttle position sensor (on throttle body assembly)
Under- hood fuse block
Underhood fuse block
Utility

4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Blazer 2001:

(not used)
(right rear of engine) g117
(top rear of automatic transmission) c116 (m-m)
1-2 shift
12 v ref
2-3 shift
2wd
4wd
A/c clu
A/c low
A/c req
A/c system
Air pump
Anti-lock brake system
Axle sw
Cruise control system
Cruise eng
Distributor (top rear of engine)
Egr sol
Egr valve
Electronic ignition control module (top right side of engine)
Engine spd
Evap purge
Evap vent
Fuel lev
Fuel pmp rly
G114 (left rear of engine)
Gen f
Gen t/o
Ground
High voltage coil wire
Iac a hi
Iac a lo
Iac b hi
Iac b lo
Iat sens
Ic timing
Idle air control valve (on throttle body assembly)
Ign timing sig.
Ignition coil (right side of engine)
Ignition feed
Low ref
Maf sig
Map sig
Mil
Nca
Pc sol
Pnk
Pnk a
Powertrain control module (right front of eng compt)
Red
S106
S140
S152
Spark plugs
Starting/ charging system
Tach. sig.
Tan
Tank pres
Tcc pwm sol
Tcc sol
Tft sensor
Tp sens
Trans sig a
Trans sig c
Transmission system
Vehicle speed sensor (rear of transmission)
Vss
Vss hi
Vss low

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Back-up Lamps Wiring Diagram for Chevrolet Blazer 2001:

(a/t)
(body harn, near breakout to rear doors) s309
(m/t) a
(not used)
B/u lp fuse 25a
B11 c2
Back-up lamp switch (m/t) (left side of transmission)
C b
C1 (m/t)
C1 f
C3 a4
C3 b3
C8 c2
F3 c1
G404 (left rear body corner)
Hot in run or start
Left back-up lamp
Mirrors system (automatic day/ night mirror)
Park/neutral position & back-up lamp switch (left side of transmission)
Pnk
Right back-up lamp
S419
S420
S427
Trailer wiring provision
Trl b/u fuse 10a
Underhood fuse block (on top of left front fender)
Veh b/u fuse 15a

Exterior Lamps Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Exterior Lamps Wiring Diagram for Chevrolet Blazer 2001:

(510 ohms)
(behind right side of dash) turn signal lamp flasher
(body harn, near breakout to chmsl lamp) s405
(center of dash) sp204
(on rear crossmember) sp423
A5 c3
A6 c3
B1 haz pwr a1 turn pwr c1 flshr out
B12 c1
B2 gnd
Body control module (under dash, on heater case)
Body relay block (behind left side of dash)
C1 a4
C1 a8
C1 c1
C1 d11
C1 e2
C10 c1
C2 c1
C3 e4
Cruise control system
D1 c3
D10 c1
E10 c1
E9 c1
F10 c1
F11
F12 c1
Fr prk fuse 10a
G108 (left radiator support)
G109 (right radiator support)
G201 (right side of dash)
G404 (left rear body corner)
G416 (left rear frame rail)
Haz lp fuse 20a
Hazard
Head
Headlamp switch
High mount stop lamp
High mount stop lamp resistor
Hot at all times
Hot in run or start
I/p fuse block (left end of dash)
Instrument cluster
Interior lights system
Left
Left front park/ turn lamp
Left front side marker lamp
Left rear license plate lamp
Left rear park/turn signal lamp
Left turn in
Left turn ind
Lr prk fuse 10a
Lt trn fuse 10a
Lt turn fuse 10a
Nca
Normal
Off
Park
Park lamp relay
Park lp fuse 20a
Park rly ctrl
Pnk
Prk lp fuse 10a
Right
Right front park/ turn lamp
Right front side marker lamp
Right rear license plate lamp
Right rear park/turn signal lamp
Right turn in
Right turn ind
Rr prk fuse 10a
Rt trn fuse 10a
S404
S427
Sp100 (at left radiator support)
Sp101 (at right radiator support)
Sp423 (on rear crossmember)
Stop lp fuse 20a
Stoplamp switch (on brake pedal support bracket)
Tr chmsl fuse 10a
Trailer wiring provisions
Trl prk fuse 10a
Trl trn 10a
Trr trn 10a
Turn fuse 20a
Turn signal switch (part of multi- function switch)
Underhood fuse block (top of left front fender)
Veh chmsl fuse 10a

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 3) for Chevrolet Blazer 2001

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List of elements for Ground Distribution Wiring Diagram (1 of 3) for Chevrolet Blazer 2001:

(2.2l)
(4.3l)
(4.3l) g117 (right rear of eng)
(engine harn, between breakout for left rear & right rear eng block ground)
(engine harn, in breakout to a/c comp and cutoff switch)
(not used)
(not used) e
(two speed) (active)
(w/o trip) (w/ trip)
2.2l
2.2l (w/ flex fuel)
4.3l
A c2
A/c compressor clutch
A/c compressor clutch diode
A/c low pressure switch
A/t
A18
Ambient temperature sensor (w/ overhead console)
Bare
Battery
Body relay block
Brake fluid level switch
C1 c1
Cruise control module
D12
Data link connector (dlc)
Daytime running lamps (drl) relay
Daytime running lamps (drl) relay (zr2)
Driver information center (dic) (utility)
E16 c16
Electronic brake control module (ebcm)
Fuel pump relay
G100 (front of left front fender)
G108 (left radiator support)
G109 (right radiator support)
G114 (left rear of eng)
G114 (left rear of engine)
G117 (right rear of eng)
G118 (right front frame rail)
G119 (2.2l) (right front of engine block, under generator)
G119 (right front of eng block)
Headlamp power relay
Heated oxygen sensor (ho2s) (bank 1 sensor 1)
Heated oxygen sensor (ho2s) (bank 1 sensor 2)
Heated oxygen sensor (ho2s) (bank 2 sensor 1)
High mount stop lamp relay (pickup)
Ignition control module
Inflatable restraint sensing & diagnostic module
Instrument panel cluster (ipc)
Left front fog lamp
Left front park/ turn signal lamp
Left high beam headlamp
Left horn
Mass airflow (maf) sensor
Nca
Park/ neutral position (pnp) switch
Powertrain control module (pcm)
Rear window washer pump motor
Remote control door lock receiver
Right front fog lamp
Right front park/ turn signal lamp
Right horn
S106 (4.3l: eng harn, 7 cm from ho2s breakout 2.2l: eng harn, 25 cm from pcm breakout)
S140 (engine harn, near end of vss connector)
S151 (heated oxygen sensor harn, 10 cm from right front heated oxygen sensor)
S152
Secondary air injection reactor (air) pump
Sp100 (left radiator support)
Sp101 (right radiator support)
Starter relay
Tan
Transfer case shift control module
Underhood fuse block
Vehicle speed sensor (vss) shield
Vehicle speed sensor shield
W/ rke
Windshield washer fluid pump

Ground Distribution Wiring Diagram (2 of 3) for Chevrolet Blazer 2001

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List of elements for Ground Distribution Wiring Diagram (2 of 3) for Chevrolet Blazer 2001:

(bravada) e16
(ex bravada)
(fleetside)
(not used)
(sportside) (fleetside)
(sportside) license lamp
(sportside) right license lamp
4 door utility & envoy
4wd
Air temperature actuator
Ashtray lamp
Automatic transmission controller
Automatic transmission preference switch (utility)
Automatic transmission shift level indicator lamp
Automatic transmission shift lock solenoid
B12
Bare
Blower motor (man a/c)
Blower motor control processor (auto a/c)
Blower motor relay (man a/c)
Body control module
Body relay block
Breakout)
C10
Cigar lighter
Courtesy lamp relay
Crew cab only
Data link connector (dlc)
Door lock relay
Door unlock relay
Driver door unlock relay
Driver side door jamb switch
Electronic climate control module
Ex 4 door utility w/ liftgate
Extention harn, 10 cm from vss breakout)
Fog lamp switch
From s427 (diagram 3 of 3)
Front passenger side door jamb switch
Fuel pump & sender
G104 (left rear of engine compartment)
G201 (right side of dash)
G202 (left side of dash)
G205 (on right side of steering column)
G416 (on left rear frame rail)
G417 (on right rear frame rail)
Headlamp ground relay
Headlamp switch
Hvac control assembly
I/p compartment lamp
Ignition key alarm switch
Inflatable restraint i/p module disable switch
Instrument panel cluster (ipc)
Left back-up lamp
Left door handle switch
Left license lamp
Left rear marker lamp
Left rear park/turn signal lamp
Left seat belt switch
Motor relay)
Nca
Park lock solenoid
Park switch
Pickup
Radio
Rear wiper/ washer switch & endgate/ liftgate window release switch
Remote playback device/ cd player
Right back-up lamp
Right license lamp
Right rear marker lamp
Right rear park/turn signal lamp
S134
S335
Sp202 (left center of dash)
Sp203 (utility & envoy) (near ashtray)
Sp401 (rear of right frame rail)
Sp402 (rear of left frame rail)
Sp423 (top of rear crossmember)
Steering wheel controls
Tan
Trailer wiring provision
Transfer case front propshaft speed sensor shield
Transfer case rear propshaft speed sensor shield
Transfer case select switch
Utility
Utility w/ auto a/c
Utility w/ man a/c
Utility w/ radio controls
Utility w/o radio controls
Vehicle speed sensor (vss) shield
W/ column shift
W/ floor shift
Windshield wiper motor

Ground Distribution Wiring Diagram (3 of 3) for Chevrolet Blazer 2001

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List of elements for Ground Distribution Wiring Diagram (3 of 3) for Chevrolet Blazer 2001:

(8-way pwr seat)
(auxiliary power tray harn, near in-line i/p connector)
(left door harn, near door speaker)
(left power seat harn, under left front seat)
(right rear body corner) g405
(utility) (pickup)
(w/ mem) h d (6-way pwr seat)
4 door only
All except base pickup
Audio amplifier
Auxiliary power outlet
B a
Breakout to inside air temperature sensor & left visor mirror)
C10
Center high mount stop lamp
Center high mount stop lamp resistor
Crew cab only
D12
D13
Driver door lock & side window switch
Driver door lock cylinder switch
Driver lumbar switch
Driver memory seat module
Driver outside rear view mirror
Driver seat adjuster switch
Front passenger door lock & side window switch
Front passenger door lock cylinder switch
Front passenger heated seat control module
Front passenger seat adjuster switch
Front passenger seat lumbar switch
G201 (right side of dash)
G202 (left side of dash)
G404 (left rear body corner)
G405 (right rear body corner)
Inside air temperature sensor assembly
Inside rear view mirror
Left back-up lamp
Left door handle switch
Left heated seat control module
Left rear door jamb switch
Left rear fog lamp
Left rear park/ turn signal lamp
Left seat belt switch
Left vanity mirror lamp
Liftgate ajar switch (liftgate)
Liftglass or liftgate window release actuator
Nca
Outside rear view folding mirror switch
Outside rear view mirror switch
Overhead console
Passenger outside rear view mirror
Pickup
Rear window defogger grid
Rear window wiper cutout & liftglass ajar jamb switch
Rear window wiper motor (liftgate)
Rear window wiper motor controller
Right back-up lamp
Right door handle switch
Right rear door jamb switch
Right rear fog lamp
Right rear park/ turn signal lamp
Right vanity mirror lamp
S269
S302
S313
S320 (right power seat harn, under right front seat)
S404 (body harn, 10 cm from high mount stop lamp breakout)
S419 (left tail lamp jpr harn, 8 cm from grommet)
S420 (right tail lamp jpr harn, 8 cm from grommet)
S427 (body harn, near left rear taillamp breakout)
S501
Sp204 (center of dash)
Sunroof module
To sp202 (diagram 2 of 3)
Transfer case shift control module (np1)
Transfer case shift control module (np8)
Turn signal/ hazard flasher module
Utility
Utility & crew cab
Vehicle interface lumbar (utility)
W/ auto day/night mirror
W/ foldilng power mirrors
W/ heated seats
W/ lumbar
W/ mirror lamps
W/ power door locks
W/o auto day/night mirror
W/o mirror lamps
Window lockout switch

HEADLIGHTS

Headlight Wiring Diagram, with ZR2 for Chevrolet Blazer 2001

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List of elements for Headlight Wiring Diagram, with ZR2 for Chevrolet Blazer 2001:

(2.2l)
(4.3l)
(body harn, 130 cm from 48-pin conn near strng col) s202
(left radiator support) g108
(right radiator support) g109
(right side of dash) g201
5v ref
A11
Ambient light sensor (top left side of dash)
Audo
B10
B12
Battery fuse 175a
Body control module (under dash, on heater case)
Body relay block (left side of dash)
C1 d9
Daytime running lamps relay (taped to body harness, near breakout for rear washer hose)
Drl relay ctrl
E10
E11
E12
E13
Exterior lights system
Fog lamp relay
Fog lamp switch
Fog lp fuse 15a
Fog lp ind
Fog rly ctrl
Fog sw in
Ftp
Ftp in
G117 (right rear of engine)
G119 (right front of engine block, under generator)
Hdlp
Hdlp sw fuse 7 10a
Headlamp ctrl
Headlamp power relay
Headlamp switch
High
High beam in
High beam/ flash-to- pass switch
Hot at all times
Hot in run
I/p fuse block
Ign e fuse 10a
Illum
Information not available
Interior lights system
Left fog lamp
Left high beam headlamp
Left low beam headlamp
Light sensor
Low
Lt hdlp fuse 15a
Nca
Park brake indicator switch (base of park brake assembly)
Park brake sw
Park lamp relay
Park lp fuse 20a
Park rly ctrl
Pklp
Pnk
Red
Right fog lamp
Right high beam headlamp
Right low beam headlamp
Rt hdlp fuse 15a
Sp100 (left radiator support)
Sp101 (right radiator support)
Sp203 (near ashtray)
Tbc fuse 10a
Underhood fuse block
Underhood fuse block (top of left front fender)

Headlight Wiring Diagram, without ZR2 for Chevrolet Blazer 2001

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List of elements for Headlight Wiring Diagram, without ZR2 for Chevrolet Blazer 2001:

(2.2l)
(4.3l)
(left radiator support) g108
(right radiator support) g109
(right side of dash) g201
5v ref
87a
A11
Ambient light sensor (top left side of dash)
Audo
B10
B12
Battery fuse 175a
Body control module (under dash, on heater case)
Body relay block (left side of dash)
C1 b12
C11
Daytime running lamps relay
Drl relay ctrl
E10
E11
E12
E13
Exterior lights system
Fog lamp relay
Fog lamp switch
Fog lp fuse 15a
Fog lp ind
Fog rly ctrl
Fog sw in
Ftp
Ftp in
G117 (right rear of engine)
G119 (right front of engine block, under generator)
G202 (left side of dash)
Hdlp
Hdlp sw fuse 7 10a
Headlamp ctrl
Headlamp grounding relay
Headlamp power relay
Headlamp switch
High
High beam in
High beam/ flash-to- pass switch
Hot at all times
I/p fuse block
Illum
Interior lights system
Left fog lamp
Left high beam headlamp
Left low beam headlamp
Light sensor
Low
Lt hdlp fuse 15a
Nca
Park brake indicator switch (base of park brake assembly)
Park brake sw
Park lamp relay
Park lp fuse 20a
Park rly ctrl
Pklp
Red
Right fog lamp
Right high beam headlamp
Right low beam headlamp
Rt hdlp fuse 15a
Sp100 (left radiator support)
Sp101 (right radiator support)
Sp202 (left center of dash)
Sp203 (near ashtray)
Tbc fuse 10a
Underhood fuse block
Underhood fuse block (top of left front fender)

HORN

Horn Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Horn Wiring Diagram for Chevrolet Blazer 2001:

Battery fuse 175a
Body control module (under dash, on heater case)
Fuse holder (engine compt, right of radiator)
G108 (engine compt, left of radiator support)
G109 (engine compt, right inside of radiator support)
Horn fuse 15a
Horn relay
Horn switch
Hot at all times
Left horn (left fender wall)
Red
Right horn (right fender wall)
Splice pack sp100 (forward lamp harn, left rear of radiator support)
Splice pack sp101 (forward lamp harn, right inside of radiator support)
Steering column
Underhood fuse block (top of left front fender)
With anti-theft

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Blazer 2001

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List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Blazer 2001:

(inside endgate) rear window wiper cutout & liftglass ajar jamb switch
(left side of dash)
(w/ trip computer)
(w/o trip computer)
A10
A11
A12
Air bag ind
Air temp
Ambient air temperature sensor (front center of vehicle, near hood latch)
Anti-lock ind
B10
B11
B12
Block)
Body control module (under dash, on heater case)
Body relay block (behind left side of dash, near i/p fuse
Body relay block (behind left side of dash, near i/p fuse block)
Brake ind
Charge ind
Check gauges ind
Clr
Clstr fuse 11 10a
Compass remote sensor (in headliner above left front seat)
Cruise fuse 3 10a
Ctsy lamp fuse 8 10a
Driver information display module (in front overhead console)
Electronic brake control module (on left front inner fender, on brake pressure module valve)
Engine coolant temperature gauge
Engine oil pressure gauge sensor (2.2l: right side of engine) (4.3l: top rear of engine, near distributor)
Exterior lights system
Fuel gauge
Fused batt
Fused ign
G117 (right rear of engine)
G201 (right side of dash)
G202
G404 (left rear body corner)
Gauges fuse 4 10a
Ground
High beam ind
Hot at all times
Hot in accy, run or rap
Hot in run
Hot in run or start
Hot in run, bulb test or start
Hot w/headlamp sw in park or head
I/p fuse block (left end of dash)
Ic logic
Ign 1
Illum fuse 12 10a
Illumination
Instrument cluster
Int lite dim
Interior lights system
Left turn
Low fuel
Mil (service engine soon ind)
Oil pressure gauge
Over speed alarm ind
Park position switch (part of automatic transmission controller)
Parklamps
Pnk
Prndl
Rdo batt fuse 19 15a
Rdo ign fuse 24 10a
Red
Right turn
S152
S205
S208
S240
S310
S427
S900
Seat belt ind
Security ind
Serial data
Service 4wd ind
Service body system ind
Spare
Speedometer
Splice pack sp201 (left side of dash)
Splice pack sp203 (near ashtray)
Tachometer
Tail gate alarm ind
Transfer case shift control module (behind right front kick panel)
Trip/ odo
Underhood fuse block (on top of left front fender)
Upshift ind
Volt reg
Volt- meter
Vss in
W/310 g
W/325

Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Blazer 2001

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List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Blazer 2001:

(engine harn, near breakout to powertrain control module)
(not used)
(pickup) a
(utility) j
2.2l
2wd
4.3l
4wd
Body control module
C116 (m-m) (near top rear of transmission)
Cruise control system
Ect sens grd
Ect sens sig in
Ect sensor in
Ect sensr grd
Engine coolant temperature sensor (front of engine, in coolant piping)
Engine coolant temperature sensor (left cylinder head, between two rear spark plugs) b
Fuel level sens grd
Fuel level sensor w/ fuel pump (top of fuel tank)
Fuel level sig in
Fuel lvl in
G115 (rear of engine)
G117 (right rear of engine)
Mil ind
Mil ind ctrl
Park/neutral position & back-up lamp switch (left side of transmission)
Powertrain control module (2.2l only) (right front of engine compt)
Prndl a
Prndl a sig
Prndl b
Prndl b sig
Prndl c
Prndl c sig
Prndl p
Prndl p sig
Radio (except bravada)
S109
S152
Serial data
Splice pack sp200 (center of dash)
Splice pack sp422 (near transmission)
Splice pack sp422/423 (left side of dash)
Tach out
Vehicle control module (4.3l only) (right front of engine compt)
Vehicle speed sensor (rear of transmission)
Vehicle speed sensor (rear transmission)
Vss high
Vss low
Vss out
Vss sig out

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet Blazer 2001

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List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet Blazer 2001:

2-door
4-door
A12
Anti-theft system
B10
B11
B12
Body control module (under dash, on heater case)
Body relay block (left side of dash, right of i/p fuse block)
Bravada only
Cargo lamp
Courtesy lamp
Courtesy lamp relay
Ctsy lamp fuse 8 10a
Dimming control
Dome lmp
Dr handle
Dr handle sw input c3
Driver door sw input
Envoy
Except envoy
From rear window washer pump motor breakout)
G201 (right side of dash)
G202 (left side of dash)
G404 (right rear body corner)
Hot at all times
I/p compartment lamp
I/p fuse block
Inadvertent power
Inadvertent power lamp relay
Lamp request
Left console courtesy lamp
Left door handle switch
Left front door jamb switch
Left rear door jamb switch
Liftgate jamb switch c2
Nca
Other
Radio
Rear door jamb switch
Rear window wiper cutout & liftgate ajar jamb switch
Right console courtesy lamp
Right door handle switch
Right rear door jamb switch
S286
S305 (body harn, in right rear door breakout)
S427
S501
S601
Sp202
Sp203
Sp204
Tan
To dome lamp (diagram 2 of 2)
To overhead console (diagram 2 of 2)
To splice s300 (diagram 2 of 2)
To splice s332 (diagram 2 of 2)
To splice s390 (diagram 2 of 2)
Transfer case shift control switch
Underhood lamp
W/ electric lock control
W/ overhead console only
W/o electric lock control
W/o overhead console only

Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet Blazer 2001

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List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet Blazer 2001:

(dome lamp harn, 5 cm from visor vanity mirror lamp left) s310
(w/ ec mirror) (w/o ec mirror)
(w/o ec mirror) (w/ ec mirror)
C301
Chmsl breakout)
Dome lamp
Dome light
Driver information display module
From body relay block (diagram 1 0f 2)
From body relay block (diagram 1 of 2)
From radio (diagram 1 of 2)
G202 (left side of dash)
Inside rearview mirror or driver information display module
Inside rearview mirror or drver information display w/o overhead console
Left visor vanity mirror lamp
Overhead console w/ sun roof
Overhead console w/o sun roof
Right visor vanity mirror lamp
S300 (dome lamp harn, 4 cm from dome lamp breakout)
S302
S310
S332 (dash to dome lamp harn, top of left "a" pillar)
S332 (dome lamp harn, 6 cm from sunroof breakout)
S390 (dome lamp harn, 5 cm from console breakout)
W/ full trip

Instrument Illumination Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Instrument Illumination Wiring Diagram for Chevrolet Blazer 2001:

(4) bulbs
(6) bulbs
(bravada)
(except bravada)
(left front door harn, 8 cm from radio speaker breakout) s502
(right side of dash) g201
(w/ trip)
(w/o trip)
A b
A5 dimmer input c3
Ash tray lamp
Automatic transmission controller indicator lamp
Automatic transmission preference switch
B a
B12
Body control module (under dash, on heater case)
Body relay block (behind left side of dash)
Body relay block (left side of dash, right of i/p fuse block)
C10
C224
Dim
Driver information display module
Envoy
Except envoy
Exterior lamps system
Fog lamp switch
G201 (right side of dash)
G202 (left side of dash)
Head
Headlamp switch
Heater controller or heater & a/c controller or electronic climate control (ecc)
Hot at all times
I/p fuse block (left side of dash)
Illum fuse 12 10a
Input dimmer
Instrument cluster
Left door lock & side window switch
Light switch
Off
Outside rearview mirror switch
Park
Pickup only
Prk lp fuse 20a
Prk lp fuse 5 10a
Prk lps c2
Radio
Rear seat audio control
Rear window defog switch
Rear wiper/ washer & endgate/ liftglass window release switch
Remote audio player
Right door lock & side window switch
S205 (dash harn, 8 cm from am/fm radio breakout)
S283 (dash harn, 13 cm from body control module breakout)
S335 (floor shift extension harn, 7 cm from lamp breakout)
S336 (floor shift extension harn, 7 cm from lamp breakout)
Sp202 (left center of dash)
Sp203 (near ashtray)
Steering wheel controls
Str whl ill fuse 6 2a
Transfer case shift control switch
Underhood fuse block (top of left inner wheelwell)
Utility w/o ecc only
Utility, except envoy
W/ electronic climate control
W/o electronic climate control a b
Window lockout switch (4 door)

MEMORY SYSTEMS

Memory Seat Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Memory Seat Wiring Diagram for Chevrolet Blazer 2001:

(pwr seat harn, near breakout to memory module) s315
Battery
Body relay box (behind left side of dash)
Data link connector (under left side of dash)
Drive rec
Front
Frt vert
G404 (left rear body corner)
Ground
Hall sensor
Horiz back
Horiz fwd
Horiz pos
Hot at all times
Lateral
Left power seat adjuster switch
Left seat front height motor
Left seat front height transducer
Left seat lateral motor
Left seat lateral transducer
Left seat rear height motor
Left seat rear height transducer
Left seat recliner motor
Mem 1
Mem 2
Mem set
Pwr seats circuit breaker 25a
Rear
Rear vert
Recline
Recline back
Recline bk
Recline fwd
Red
Ref voltage
S304
S313
S316 (pwr seat harn, near breakout to memory module)
Seat memory module (under driver's seat)
Sens gnd
Serial data
Splice pack sp201 (left side of dash below i/p fuse block)
Tan

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 5) for Chevrolet Blazer 2001

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List of elements for Power Distribution Wiring Diagram (1 of 5) for Chevrolet Blazer 2001:

(2.2l)
(4.3l)
(air jumper harn, between ground on right radiator support & breakout to eng harn)
A10
Acc
Air fuse 30a
Air injection reactor fuse block
Air relay
Air sol fuse 30a
B10
B11
Battery
Battery fuse 175a
Body control module
C10
California only
Central sequential fuel injection (4.3l)
Crankshaft position (ckp) sensor (4.3l)
D10
E10
Ecm 1 fuse 15a
Eng 1 fuse 10a
Evaporative emissions (evap) canister purge solenoid
Evaporative emissions (evap) canister vent solenoid
F10
From ecm 1 a fuse diagram 1 of 5)
Fuel composition sensor (2.2l)
Fuel injectors
Fusible link (10 ga-red)
Gauges fuse 4 10a
Generator
Heated oxygen sensor (ho2s) (bank 1 sensor 1)
Heated oxygen sensor (ho2s) (bank 1 sensor 3) (4.3l)
Heated oxygen sensor (ho2s) (bank 2 sensor 1) (4.3l)
I/p fuse block
Ign a fuse 40a
Ignition coil (4.3l)
Ignition control module (icm)
Ignition switch
Inflatable restraint i/p module disable switch
Inflatable restraint sensing & diagnostic module
Instrument panel cluster (ipc)
Lock
Mass air flow (maf) sensor (4.3l)
Multi- function switch
Nca
Off
Oxygen fuse 20a
Pickup
Pnk
Powertrain control module (pcm) (4.3l)
Red
Run
S105
S150 (heated oxygen sensor harn, pnk near heated oxygen sensor breakout)
Secondary air injection reactor pump
Sir fuse 16 15a
Start
Starter
Starter relay
To b/u lp fuse (diagram 2 of 5)
To eng 1 fuse (diagram 1 of 5)
To ign c fuse (diagram 2 of 5)
Turn fuse 10 20a
Underhood fuse block

Power Distribution Wiring Diagram (2 of 5) for Chevrolet Blazer 2001

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List of elements for Power Distribution Wiring Diagram (2 of 5) for Chevrolet Blazer 2001:

(body harn, near rear doors breakout) s309
(not used)
(w/ automatic day/night mirror)
2 door
4 door
A/c compressor clutch relay
A/t
Abs fuse 60a
Acc
Air relay
Automatic transmission shift lock (btsi) solenoid (w/ floor shift a/t)
B/u lp fuse 25a
B11
B12
Back-up lamp switch
Blower motor relay
Blower motor resistor assembly
Body relay block
Btsi fuse 10a
C12
D12
Daytime running lamp (drl) relay
Electronic brake control module (ebcm)
From b/u lp fuse diagram 2 of 5)
From ign a fuse diagram 1 of 5)
From oxygen b fuse diagram 1 of 5)
Haz lp fuse 20a
Headlamp grounding relay
Headlamp switch
Hvac fuse 30a
Ign b fuse 50a
Ign c fuse 20a
Ign e fuse 10a
Ignition switch
Inside rear view mirror (utility)
Left back-up lamp (pickup)
Left back-up lamp (utility)
Lock
M/t
Multi- function switch
Off
Park lamp relay
Park lp fuse 20a
Park/ neutral position (pnp) switch
Pnk
Rear defogger relay (utility)
Red
Right back-up lamp (pickup)
Right back-up lamp (utility)
Run
Secondary air injection reactor fuse block (calif)
Sp204 (center front of dash)
Sp400 (center of rear crossmember) (pickup)
Start
Stop lamp switch
Stud 2 fuse 30a
To clstr fuse (diagram 4 of 5)
To crank fuse (diagram 4 of 5)
To ign e fuse (diagram 2 of 5)
To rap maxi fuse (diagram 3 of 5)
To rap relay (diagram 5 of 5)
To s204 (diagram 5 of 5)
Trailer wiring provisions
Trailer wiring provisions (utility w/ m/t)
Transfer case shift control module (np1)
Trl b/u fuse 10a
Underhood fuse block
Veh b/u fuse 15a
W/ electronic climate control
W/ zr2
W/o electronic climate control

Power Distribution Wiring Diagram (3 of 5) for Chevrolet Blazer 2001

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List of elements for Power Distribution Wiring Diagram (3 of 5) for Chevrolet Blazer 2001:

(auxiliary power outlet harn, near left and right aux power outlets)
(body harn, near rear doors breakout)
(bravada) f10
(dome lamp harn, 5 cm from left sunshade mirror lamp breakout) s310
(ex bravada)
(i/p harn, 4 cm from bcm breakout)
(near steering column) s202
(near viu) s400
(not used)
(pickup)
(utility)
(w/ on star)
2 door
4 door
A10
Ampf fuse 20 25a e1
Audio amplifier
Automatic a/c
Aux pwr fuse 13 25a
Body relay block
C12
C301
Cargo lamp (utility)
Cigar lighter
Cigar ltr fuse 2 15a
Ctsy lp fuse 8 10a
Data link connector (dlc)
Daytime running lamp (drl) relay
Dome lamp (utility) dome lamp & center high mounted stop lamp (pickup)
Dome lamp (w/ sunroof)
Dome lamp (w/o sunroof)
Door lock relay
Door unlock relay
Driver information center (dic)
Driver information center (dic) (w/o trip computer)
Driver seat adjuster switch
Driver seat lumbar switch
Driver's door unlock relay
E16
Ecm b fuse 20a
Electronic climate control module
F16
Fog lamp relay
Fog lp fuse 15a
From abs i fuse (diagram 2 of 5)
From int bat fuse (diagram 3 of 5)
From s223 diagram 3 of 5)
Front passenger seat adjuster switch
Fuel pump relay
G201 (right side of dash)
Garage door opener module
Hdlp sw fuse 7 10a
Headlamp switch
I/p fuse block
Inadvertent power lamp relay
Instrument panel cluster (ipc)
Int bat fuse 50a
Left accessory power outlet
Left console courtesy lamp
Manual a/c
Memory seat module
Nca
Power seats circuit breaker 25a (utility)
Powertrain control module (pcm)
Pwr lcks fuse 14 15a
Radio
Rap fuse 50a
Rdo bat fuse 19 15a
Red
Right acessory power outlet
Right console courtesy lamp
S223
S268
S304
S311 (in left power seat harn)
Sp203 (near ashtray)
Tape/cd remote playback device (bravada)
To hi beam fuse (diagram 3 of 5)
To pwr lcks fuse 14 (diagram 3 of 5)
To rap relay (diagram 5 of 5)
To tbc fuse (diagram 4 of 5)
Transfer case shift control module (w/ np1)
Under- hood fuse block
Underhood fuse block
Utility
Utility w/ oeverhead trip console
Utility w/o overhead console & pickup
Utility w/overhead
Vehicle interface unit (viu) (w/ on star)
W/ auto a/c: near bcm breakout) s208
W/ memory
W/o memory

Power Distribution Wiring Diagram (4 of 5) for Chevrolet Blazer 2001

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List of elements for Power Distribution Wiring Diagram (4 of 5) for Chevrolet Blazer 2001:

(body harn, 13 cm from blower motor breakout) pnk
(eng harn, 20 cm from a/c pressure sensor breakout)
(left power seat harn, under left front seat)
(right power seat harn, under right front seat)
(w/ np1)
(w/o np1)
2.2l
4.3l
A/c compressor clutch relay
A/c fuse 10a
Atc fuse 20a
Automatic transmission
Automatic transmission shift lock solenoid (w/ floor shift a/t)
Body control module
Body relay block
C1 a1
C175
Center high mounted stop lamp
Clutch pedal position (cpp) switch (m/t)
Crank fuse 10a
Cruise control module
D11
D14
D15
D16
Daytime running lamps (drl) relay
Dome & high mount stop lamp
Driver door lock/ side window switch
Driver outside rear view mirror
Driver seat heater module
Driver seat lumbar switch
E10
E11
E12
Estc 4wd
Ex bravada
F10
F11
F12
From atc m fuse (diagram 4 of 5)
From hi beam fuse (diagram 3 of 5)
From ignition switch pin c1 (diagram 2 of 5)
From ignition switch pin d1 (diagram 2 of 5)
Front passenger door lock/ window switch
Front passenger seat heater module
Front passenger seat lumbar switch
Headlamp power relay
High mount stop lamp relay (pickup)
High mount stop lamp resistor
Horn (a note)
Horn (f note)
Horn fuse 15a
Horn relay
Htd mir fuse 10a
Htd seat fuse 20a (utility)
I/p fuse block
Instrument panel cluster (ipc)
K6 clstr fuse 11 10a l5
Left low beam headlamp
Lift- glass relay (utility)
Liftgate or endgate lock cylinder switch
Lt hdlp fuse 15a
Mir/lks fuse 3a
Multi- function switch (flash to pass)
Multifunction switch (utility)
Nca
Outside rear view mirror switch
Park/ neutral position (pnp) switch (a/t)
Passenger outside rear view mirror
Pickup
Pnk
Powertrain control module (pcm)
Rear defogger relay (utility)
Rear window defogger grid (utility)
Rear window wiper motor
Remote control door lock receiver
Right high beam headlamp
Right low beam headlamp
Rr defog fuse 30a
Rr w/w fuse 15a (utility)
Rt hdlp fuse 15a
S113
S116
S129
S314
S321
S405 (body harn, 10 cm before hmsl breakout)
Stop lp fuse 20a
Stoplamp switch
Tbc fuse 10a
To a/c fuse (diagram 4 of 5)
Trailer wiring provisions
Transfer case encoder motor
Transfer case shift control module
Trchmsl fuse 10a
Under- hood fuse block
Utility
Vechmsl fuse 10a
W/ rke
W/np1
W/o np1

Power Distribution Wiring Diagram (5 of 5) for Chevrolet Blazer 2001

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List of elements for Power Distribution Wiring Diagram (5 of 5) for Chevrolet Blazer 2001:

(17 cm from sp202, left center of dash) s203
(body harn, 7 cm from g404 breakout)
(bravada) c1
(ex bravada)
(i/p harn, in heater controller breakout) s217
(i/p harn, near breakout to 40-pin conn at right front center floor console, behind access panel)
(i/p harn, near i/p fuse block) s204
(not used)
(w/ trip)
(w/np1) c1
(w/o np1)
(w/o trip)
4wd fuse 15 10a g3
Abs fuse 22 10a
Air temperature actuator
Body control module
Body relay block
C8 e10
Clutch pedal position switch
Cruise control module
Cruise fuse 3 10a
Driver door lock & window switch
Driver information display module
Driver seat lumbar switch
Electronic brake control module (ebcm)
Except base pickup
From 4wd fuse (diagram 5 of 5)
From ignition switch pin c6 (diagram 2 of 5)
From ignition switch pin d6 (diagram 2 of 5)
From power seats circuit breaker (diagram 3 of 5)
Front axle indicator switch
Front axle vacuum solenoid
Front pas- senger seat lumbar switch
Front passenger door lock & window switch (2 door)
Frt wpr fuse 17 25a
Hvac 1 fuse 21 10a
Hvac control assembly
Hvac control assembly (w/ c42)
Hvac control assembly (w/o electronic climate control)
Hvac control module
Hvac fuse 9 20a
I/p fuse block
Inside air temperature sensor
Inside rear view mirror (w/ automatic day/night mirror)
Instrument panel cluster
Multi- function switch
Multifunction switch
Nca
Pickup
Power window circuit breaker 30a
Power- train control module (w/o np1 or np8)
Radio
Rdo ign fuse 24 10a
Rear wiper/ washer switch & endgate/ liftgate window release switch (utility)
Retained accessory power (rap) relay
Rr wpr fuse 23 15a
Sp200 (center front of dash)
Steering wheel controls (utility)
Stop- lamp switch
Str whl rdo ign fuse 18 2a
Sunroof module
To hvac fuse (diagram 5 of 5)
Transfer case select switch (w/ np1 or np8)
Transfer case shift control module
Utility
Utility w/ electronic climate control
Utility w/ manual hvac control
Vacuum control assembly
W/ np1 or np8
W/o memory
Window lockout switch (4 door)
Windshield wiper motor

POWER DOOR LOCKS

Power Door Lock Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Power Door Lock Wiring Diagram for Chevrolet Blazer 2001:

(body harn, near breakout to rear doors) s307
87a
A5 c1
B11
Battery
Body control module (under dash, on heater case)
Body relay block
Body relay block (behind left side of dash, near i/p fuse block)
C211
D10
Door lock relay
Door unlock relay
Dr lk rly
Dr unlk rly
Driver door lock actuator
Driver door lock and window switch
Driver door unlock relay
Drv dr unlk rly
E10
E11
E12
Endgate or liftgate lock cylinder switch
F10
F12
Front passenger door lock actuator
Front passenger door lock and window switch
G117 (right rear of engine)
G202 (left side of dash)
Ground
Hot at all times
I/p fuse block
Ign key switch
Ignition key alarm switch
Left rear door lock actuator
Liftgate lock actuator
Lock
Mir/lck fuse 7 3a
Mirrors system
Pwr lks fuse 14 15a
Remote control door lock receiver (behind lower left side of dash)
Right rear door lock actuator
S308 (body harn, near breakout to left rear door)
Splice pack sp202 (left center of dash)
Tan
Tan b4
Trc fuse 10a
Underhood fuse block
Unlock
Vehicle speed system
Vss
W/ keyless entry

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Electrochromic Mirror Wiring Diagram for Chevrolet Blazer 2001:

(body harn, between rear door and endgate connector)
A/t
Auto
Automatic day/ night mirror
Automatic day/night mirror signal
B/u lamp fuse 25 25a
B11
Back-up lamp switch (on left side of trans- mission)
C2 f
Exterior lights system
G202 (left side of dash)
Hot in run
Hot in run or start
Hvac1 fuse 21 10a
I/p fuse block (on left end of dash)
Left outside rearview mirror
M/t
Nca
Off
Park/neutral position (pnp) switch (on left side of transmission)
Photo sensor
Pnk
Power & logic circuits
S302
S309
Underhood fuse block (on top of left front fender)
Veh b/u fuse 12 15a
W/ vehicle communication system
W/ddo
W/o vehicle communication system

Power Mirrors Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Power Mirrors Wiring Diagram for Chevrolet Blazer 2001:

1999-01
Body relay block (behind left side of dash, near i/p fuse block)
Down
Driver outside rearview mirror
E12
F12
Front passenger outside rearview mirror
G202 (left side of dash)
Hot at all times
Ilum
Interior lights system
Left
Left/ right m
Mir/lcks fuse 7 3a
Motor
Nca
Outside rear view mirror switch
Power door locks system
Right
S501
Underhood fuse block
Up/ down m

POWER SEATS

6-Way Power Seat Wiring Diagram for Chevrolet Blazer 2001

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List of elements for 6-Way Power Seat Wiring Diagram for Chevrolet Blazer 2001:

A nca
Back
Body relay block
Driver seat adjuster switch
Driver seat front vertical motor
Driver seat horizontal motor
Driver seat rear vertical motor
Front passenger seat adjuster switch
Front passenger seat front vertical motor
Front passenger seat horizontal motor
Front passenger seat rear vertical motor
Frt dn
Frt up
Fwd
G404 (left rear body corner)
Hot at all times
Nca
Power seats circuit breaker 25a
Rear dn
Rear up
S304
S313
S320
Tan

8-Way Adjustable Power Seat Wiring Diagram for Chevrolet Blazer 2001

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List of elements for 8-Way Adjustable Power Seat Wiring Diagram for Chevrolet Blazer 2001:

Back
Body relay block
Driver power recliner motor
Driver seat adjuster switch
Driver seat front vertical motor
Driver seat horizontal motor
Driver seat rear vertical motor
Front passenger power recliner vertical motor
Front passenger seat adjuster switch
Front passenger seat front vertical motor
Front passenger seat horizontal motor
Front passenger seat rear vertical motor
Frt dn
Frt up
Fwd
G404 (left rear body corner)
Hot at all times
Power seats circuit breaker 25a
Rear dn
Rear up
Recl fwd
Recl rwd
S304
S313
S320
Tan

Heated Seats Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Heated Seats Wiring Diagram for Chevrolet Blazer 2001:

Batt
Cruise fuse 3 10a
Driver heated seat control module
Driver seat lumbar switch
Front passenger heated seat control module
Front passenger seat lumbar switch
G404 (left rear body corner)
Gnd
Heated output
Heater element seat back
Heater element seat cushion
Hot at all time
Hot in run
Htd seat fuse 20a
I/p fuse block
Nca
Off
Pnk
S313
S314
S320
Splice pack sp200
Sw/ntc
Underhood fuse block

Lumbar Wiring Diagram, with Memory for Chevrolet Blazer 2001

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List of elements for Lumbar Wiring Diagram, with Memory for Chevrolet Blazer 2001:

Driver seat lumbar motor
Driver seat lumbar switch
Front passenger lumbar motor
Front passenger seat lumbar switch
G404 (left rear body corner)
Hot at all times
Htd seat fuse 20a
Nca
Out
Pnk
S313
S314 (w/ heated seats)
S320
S321 (w/ heated seats)
S427
Underhood fuse block

Lumbar Wiring Diagram, without Memory for Chevrolet Blazer 2001

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List of elements for Lumbar Wiring Diagram, without Memory for Chevrolet Blazer 2001:

(not used)
Body relay block
Driver seat lumbar switch
Front passenger seat lumbar switch
G404 (left rear body corner)
Hot at all times
Htd seat fuse 20a
Left lumbar motor
Nca
Out
Pnk
Power seats circuit breaker 25a
Right lumbar motor
S311
S313
S320
S427
Underhood fuse block

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagrams for Chevrolet Blazer 2001

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List of elements for Power Top/Sunroof Wiring Diagrams for Chevrolet Blazer 2001:

(not used)
Body relay block (behind left side of dash, near i/p fuse block)
Close
Driver information center (dic) (in front overhead console)
G202 (left side of dash)
Ground
Hot in accy, run & rap
Ign
Ls common
Ls1
Ls2
Ls3
Motor close & tilt down
Motor open &
Open
Open & tilt dwn input
Power window circuit breaker 30a
Red
S302
Sun roof control switch
Sun roof module (at front of sun roof)
Sun roof motor (in front of sun roof)
Sw comm
Tilt up
Tilt up input close &

POWER WINDOWS

Power Window Wiring Diagram, 2 Door for Chevrolet Blazer 2001

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List of elements for Power Window Wiring Diagram, 2 Door for Chevrolet Blazer 2001:

(left side of dash) g202
Body relay block (behind left side of dash, near i/p fuse block)
C1 f
C1 k
C2 b
C2 c
Driver door lock & window switch
Driver window regulator motor
Express down module
Front passenger door lock & window switch
Front passenger window motor
Hot in acc, run & retained acc power
Hot w/headlamp switch in park or head position
I/p fuse block (on left end of dash)
Illum
Left front window switch
Park lp fuse 5 10a
Power window circuit breaker 30a
Right front window switch
S501
S601
Side of dash) g201
Tan

Power Window Wiring Diagram, 4 Door for Chevrolet Blazer 2001

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List of elements for Power Window Wiring Diagram, 4 Door for Chevrolet Blazer 2001:

(left side of dash) g202
(right side of dash) g201
Body relay block (behind left side of dash, near i/p fuse block)
C1 k
C2 b
Driver door lock & window switch
Driver window motor
Express down module
Front passenger door lock & window switch
Front passenger window motor
G202 (left side of dash)
Hot in acc, run & retained acc power
Hot w/headlamp switch in park or head position
I/p fuse block (on left end of dash)
Illum
Left front window switch
Left rear side window regulator motor
Left rear window switch
Park lp fuse 5 10a
Power window circuit breaker 30a
Right rear side window regulator motor
Right rear window switch
S306
S501
S502
S601
Tan
Window lockout switch

RADIO

Radio Wiring Diagrams, with Amplifier for Chevrolet Blazer 2001

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List of elements for Radio Wiring Diagrams, with Amplifier for Chevrolet Blazer 2001:

(1999)
(2000-01)
1998-00
A10
A11
A12
Amp feed
Ampf fuse 20 25a
Antenna
Audio amplifier (in center console)
Audio rtn
B10
B11
B12
Bare
Battery
Body control module (under dash, on heater case)
Dim sig
Drain rtn
E&c diag
Engine controls system
Ft aud rtn
Ft low
Fuse out
G201 (right side of dash)
G202 (left side of dash)
Ground
Hot at all times
Hot in acc or run
Hot in acc run or rap
I/p fuse block
Ign
Interior lights system
Led dim
Left front door speaker
Left rear door speaker
Lf audio
Lf drain
Lf low
Lf sp feed
Lf sp rtn
Lock coil 2
Lr audio
Lr low
Lr sp feed
Lr sp rtn
Lt audio
Lt remote
Mute
Nca
Powertrain control module (right front of engine compartment)
Preset
Pwr ant
Radio
Rdo batt fuse 19 15a
Rdo ign fuse 24 10a
Rear return
Remote rtn
Rf audio
Rf low
Rf sp feed
Rf sp rtn
Rf spk feed
Right front door speaker
Right rear door speaker
Rly feed
Rr audio
Rr low
Rr sp rtn
Rt audio
Rt remote
S240
Seek
Seek dn
Sp203
Splice pack sp202 (i/p harn, left side of dash)
Splice pack sp203 (i/p harn, in front of ashtray)
St col sig
Steering wheel controls
Str whl rdo ign fuse 24 10a
Tan
Tape or cd player-remote playback device (in center floor console)
Tape sig
Vehicle control module (right front of engine compartment)
Vol dn
Vol up
Vss signal

Radio Wiring Diagrams, without Amplifier for Chevrolet Blazer 2001

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List of elements for Radio Wiring Diagrams, without Amplifier for Chevrolet Blazer 2001:

(1999)
(2000-01)
(i/p harn, between bcm & radio)
(i/p harn, between breakouts to lf speaker & cluster) s273
(i/p harn, between breakouts to radio & rt ctsy lamps) s274
(i/p harn, in front of ashtray)
(i/p harn, in front of ashtray) b
1998-00
A12
Antenna
Audio rtn
Bare
Battery
Body control module (under dash, on heater case)
Dim sig
Drain rtn
E&c diag
Engine controls system
Fuse out
G201 (right side of dash)
G202 (left side of dash)
Ground
Hot at all times
Hot in acc or run
Hot in acc run or rap
I/p fuse block
Interior lights system
Led dim
Left front door speaker
Left rear speaker
Lf +
Lf -
Lr +
Lr -
Lt audio
Lt remote
Mute
Nca
Powertrain control module (right front of engine compartment)
Preset
Radio
Rdo batt fuse 19 15a
Rdo ign fuse 24 10a
Remote rtn
Rf +
Rf -
Right front door speaker
Right rear speaker
Rr +
Rr -
Rt audio
Rt remote
S240
S272 (i/p harn between breakout to radio and rt ctsy lamps)
S275
Seek
Seek dn
Sp203
Splice pack sp202 (i/p harn, left side of dash)
Splice pack sp203
St col sig
Steering wheel controls
Str whl rdo ign fuse 24 10a
Tan
Tape or cd player-remote playback device (in center floor console)
Tape sig
Vehicle control module (right front of engine compartment)
Vol dn
Vol up
Vss signal

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Shift Interlock Wiring Diagram for Chevrolet Blazer 2001:

2 door
4 door
Automatic transmission shift lock solenoid (in steering column)
B/u lamp fuse 25 25a
B12
Btsi fuse 10a
C12
G202 (left side of dash)
Hot in run & start
Park/ neutral position (pnp) switch (on left side of transmission)
Pnk
Splice pack sp202 (behind left center of dash)
Splice pack sp204 (behind center of dash)
Stoplamp switch (on brake pedal support bracket)
Transmission systems (transfer case)
Underhood fuse block (on top of left front fender)

STARTING/CHARGING

Charging Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Charging Wiring Diagram for Chevrolet Blazer 2001:

(4.3l)
(4.3l) (2.2l)
(on right front of engine compartment) powertrain control module (pcm)
4.3l w/o auto a/c
A10
Battery
C1 c1
C2 c1
Charge indicator
Class 2
Class ii data
Except 4.3l w/o auto a/c
Fuse holder (right of radiator)
Fusible link (5 ga- rust)
G109 (right radiator support)
G118 (right front frame rail)
G119 (right front of engine block)
Generator control/ monitoring
Generator l
Hot at all times
I/p fuse block (on left end of dash)
Instrument cluster
Not used
Rdo batt fuse 19 15a
Red
S240
Solid state
Splice pack sp201 (below i/p fuse block)
Starter solenoid
Voltage regulator

Starting Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Starting Wiring Diagram for Chevrolet Blazer 2001:

(2000) a
(2000) c
(2001) c
(2001) d
(4.3l) g117 (right rear of engine)
(a/t)
(m/t only)
(m/t)
(m/t) (a/t)
(not used)
A/t
A11
Acc
B stud
Batt
Battery
Battery fuse 175a
C1 c2
C3 e2
Clutch pedal position switch (on clutch pedal support bracket)
Crank fuse 10a
D11
F11
Fuse holder (right of radiator)
Fusible link (10 ga- rust)
G109 (right radiator support)
G118 (right front frame rail)
G119 (2.2l) (right front of engine block, under generator)
G119 (right front of engine block)
Generator
Hold- in coil
Hot at all times
Ign a fuse 40a
Ign c fuse 20a
Ignition switch
Lock
M/t
Off
P/n
Park/neutral position & back-up lamp switch (on left side of transmission)
Power distribution system
Pull- in coil
Red
Run
Start
Starter motor
Starter relay
Underhood fuse block (on top of left front fender)
W/4.3l engine

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Supplemental Restraint Wiring Diagram for Chevrolet Blazer 2001:

(at right frame rail, forward of right front wheel) g101
(no connection)
(right side of dash) g201
A10
A11
A12
A13
A14
A15
A16
A17
A18
Airbag indicators
Class 2 serial data
Data
Data link connector (dlc) (partial) (under left side of dash)
Front signal
Ground
High control
Hot in run & start
I/p fuse block (on left end of dash)
Ign
Ignition
Illumination lamp
Indicator control
Indicator lamp
Inflatable restraint ip module
Inflatable restraint ip module disable switch (pickup only)
Inflatable restraint sensing & diagnostic module (under console & carpet, between front seats)
Inflatable restraint steering wheel module
Inflatable restraint steering wheel module coil
Instrument panel cluster (ipc)
Interior lights system
Left inflatable restraint front end discriminating sensor (on front frame crossmember)
Low control
Low reference
Nca
Pnk
Right inflatable restraint front end discriminating sensor (on front frame crossmember)
Shorting bar
Sir fuse 16 15a
Solid state
Splice pack sp201 (on left end of dash)
Splice pack sp203 (in front of ashtray, strapped to body harness)
Switch signal

TRANSMISSION

4.3L

4.3L VIN W, A/T Wiring Diagram, 4L60-E for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, A/T Wiring Diagram, 4L60-E for Chevrolet Blazer 2001:

(right rear of cylinder head) g103
(under dash, on heater case) body control module
+5v
1-2 shift solenoid
1-2 ss
2-3 shift solenoid
2-3 ss
3-2 shift solenoid
3-2 ss
4wd circuit (w/ 2 speed transfer case)
4wd low
A/t fluid pressure manual valve position switch
A/t shift lock solenoid
A10
A11
A12
Abs fuse 22 10a
Automatic transmission (4l60-e)
B8 c2
Bare
Blower motor resistor)
Brk sw
Cls 2 data
Clstr fuse 11 10a
Cruise control & anti-lock brakes systems
D3, d2
D4, d2
Data link connector (under left side of dash)
Ecm b fuse 20a
Ecm i fuse 15a
Ect sig
Electronic brake control module
Engine coolant temperature sensor (on left cylinder head, between rear plugs)
Fluid temp sensor
Frt axle sw
G104 (left rear of cylinder head)
G105 (left rear of cylinder head)
Gauges fuse 4 10a
Gnd
Hot at all times
Hot in off, run, or start
Hot in run
Hot in run or start
I/p fuse block (on left end of dash)
Ign
Instrument cluster
Instrument panel cluster (ipc)
Lo ref
Mil (service engine soon ind)
Mil ctrl
Park/neutral position switch (left side of transmission)
Pc sol hi
Pc sol lo
Pnk
Powertrain control module (right front of engine compt)
Press ctrl solenoid
Prnd a
Prnd b
Prnd c
Prnd p
Range b
Range c
Red
Red a
Rev, lo
S106
S113
S116
S140
S152
S203
Sens gnd
Solid state
Splice pack sp201 (behind left side of dash)
Stoplamp switch (on brake pedal support bracket)
Tan
Tcc pwm
Tcc pwm solenoid
Tcc sol
Tcc solenoid
Tft sens sig
Throttle position sensor (on throttle body assembly)
Tp sig
Trans rng a
Underhood fuse block (on top of left front fender)
Utility w/ floor shift
Vehicle speed sensor (right rear of trans)
Vss adapter (4wd) (left side of trans)
Vss hi
Vss lo

4.3L VIN W, Transfer Case Wiring Diagram, with 2-Speed Automatic Transfer Case for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, Transfer Case Wiring Diagram, with 2-Speed Automatic Transfer Case for Chevrolet Blazer 2001:

(left rear of engine compt) g117
+8v ref
+8v ref out
2-hi ind
4-hi ind
4-lo ind
4wd fuse 15 10a
4wd ind
4wd lo
4wd lo ind sig
4wd sw sig
Atc fuse 20a
Axle sw sig
Bare
Body control module
Body relay block (behind left side of dash)
C1 e5
Channel-a
Channel-b
Channel-c
Channel-p
Class ii data
Class ii serial data
Clutch sol sig
Crank fuse 10a
Data link connector (dlc) (partial) (under left side of dash)
Decoder logic
E10
E11
E12
E13
E14
E15
E16
Encoder motor
Encoder sig rtn
F10
F11
F12
F13
F14
F15
F16
Front axle indicator switch (on front axle, right of diff)
Front axle vacuum solenoid (on firewall, near windshield wiper motor)
Front propshaft speed sensor
Ft shaft speed hi
Ft shaft speed lo
Fwd
G105 (left rear of cylinder head)
G203 (right side of dash)
G205 (right side of dash)
Gauges fuse 4 10a
Gnd
Ground
Hot at all times
Hot in run
Hot in run or start
Hot in start
I/p fuse block (on left end of dash)
Ignition
Illum lamps
Instrument panel cluster
Interior lights system
Lock sol out
Module ground
Motor feed a
Motor feed b
Motor lock
Nca
Neutral ind
Pnk
Powertrain control module (right front of engine compt)
Pwr
Rear propshaft speed sensor
Red
Rr shaft speed hi
Rr shaft speed lo
S134 bare
S152
Service 4wd ind
Solid state
Splice pack sp200 (center of dash)
Splice pack sp201 (behind left side of dash)
Splice pack sp203 (near ashtray)
Splice pack sp204 (center of dash)
Starting/ charging system
Tan
Transfer case encoder motor
Transfer case shift control module (behind right front kick panel)
Transfer case shift control switch
Underhood fuse block
Underhood fuse block (on top of left front fender)

4.3L VIN W, Transfer Case Wiring Diagram, with 2-Speed Selectable Transfer Case for Chevrolet Blazer 2001

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List of elements for 4.3L VIN W, Transfer Case Wiring Diagram, with 2-Speed Selectable Transfer Case for Chevrolet Blazer 2001:

(a/t) pnp switch in
(right front of engine compt) powertrain control module
12v battery
12v ignition (3)
2 door
2 hi request
2 hi status lamp
2wd hi indicator
2wd hi switch
4 door
4 hi request
4 hi status lamp
4 lo request
4 lo status lamp
4wd fuse 15 10a
4wd hi indicator
4wd hi switch
4wd lo in
4wd lo indicator
4wd lo selected
4wd lo switch
Anti-lock brakes system
Atc fuse 20a
Axle sw
Battery
Body relay block (behind left side of dash)
Btsi fuse 10a
C10
C11
C12
C13
C14
C15
C16
Crank fuse 10a
Cruise control system
Ctsy lp fuse 8 10a
D10
D11
D12
D13
D14
D15
D16
Data link connector
Data link connector (dlc) (partial) (under left side of dash)
Encoder channel a
Encoder channel b
Encoder channel c
Encoder channel p
Encoder channel-a
Encoder channel-b
Encoder channel-c
Encoder channel-p
Encoder ground
Encoder sig ground
Front axle indicator switch (on front axle, right of diff)
G203 (right side of dash)
G205 (right side of dash)
Ground
Hot at all times
Hot in park or neutral
Hot in run
Hot in start
I/p fuse block (on left end of dash)
Ignition
Illumination lamp
Instrument cluster & sound systems
Interior lights system
M shift motor
Motor control a
Motor control b
Red
S121 (body harn, 6.5 cm from blower motor breakout)
S208
Solid state
Splice pack sp204 (center of dash)
Splice pack sp200 (center of dash)
Splice pack sp203 (near ashtray)
Splice pack sp204 (center of dash)
Starting/ charging system
Stoplight switch
Transfer case encoder motor
Transfer case shift control module (behind right front kick panel)
Transfer case shift control switch
Underhood fuse block (on top of left front fender)
Vehicle speed in
Vs signal

TRUNK, TAILGATE, FUEL DOOR

Liftgate/Endgate Release Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Liftgate/Endgate Release Wiring Diagram for Chevrolet Blazer 2001:

(w/o rke)
(w/rke) a b
A12
A5 c1
B10
Body control module (under dash, on heater case)
Body relay block (behind left side of dash, near i/p fuse block)
C (w/rke) (w/o rke) a
Class 2 serial data
D11
D12
E12
F10
G201 (right side of dash)
G404 (left rear body corner)
Gmcm serial data
Hot at all times
Left door lock cylinder switch (inside door latch assembly)
Lift glass release sw sig
Liftgate/ endgate window release actuator (in top of endgate)
Liftgate/endgate lock cylinder switch (on bottom center of liftgate)
Liftglass rel relay ctrl
Liftglass relay
Mir/lks fuse 3a
Park brake sw sig
Park brake switch (on base of park brake assembly)
Powertrain control module (on right front of engine compt)
Rear wiper/ washer & endgate/liftgate window release switch
Remote control door lock receiver (behind lower left side of dash)
S427
Splice pack sp201 (body harness, under left side of dash)
Splice pack sp203 (near ashtray)
Transer case select switch
Underhood fuse block (on top of left front fender)

WARNING SYSTEMS

Warning System Wiring Diagrams for Chevrolet Blazer 2001

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List of elements for Warning System Wiring Diagrams for Chevrolet Blazer 2001:

(2000 envoy) (2000 4 dr & 2001) j
(pickup)
(right liftgate harn, 5cm before breakout to rear washer pump motor) s900
(splice pack 201 (behind left side of dash, below i/p fuse block)
A12
Auto
B10
B11
Battery
Body control module (behind dash, on heater case)
Cruise fuse 3 10a
Door jam switch
Door locks
Exterior lights
Front lt left fuse 10a
Front rt turn fuse 10a
G108 (left radiator support)
G109 (right radiator support)
G201 (right side of dash)
G202 (left side of dash)
G404 (left rear body corner)
Gauges fuse 4 10a
Ground
Hdlp
Headlamp req
Headlamp switch
Hot at all times
Hot in park or head
Hot in run
Hot in run & start
I/p fuse block
Ignition 3
Ignition key alarm switch
Ignition on input
Instrument cluster
Instrument cluster (center of dash)
Interior lights
Key in ign
Left door jamb switch
Left front park & turn signal lamp
Left turn sig
Liftgate ajar jamb switch (integral with liftgate latch)
Park lps fuse 5 10a
Park lps in
Pickup
Pklp
Pnk
Rear window wiper cutout & liftglass ajar jamb switch (near latch assembly)
Right front park & turn signal lamp
Right turn sig
S283
S313
S427
Seat belt input
Seat belt switch (under left front seat)
Seats system
Serial data
Sp100 (left radiator support)
Sp101 (right radiator support)
Sp202 (left center of dash)
Sp203 (near ashtray)
Sp204
Splice pack
Tan
Tbc fuse 10a
Underhood fuse block
Utility

WIPER/WASHER

Front Wiper/Washer Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Front Wiper/Washer Wiring Diagram for Chevrolet Blazer 2001:

(4.3l) g117
(body harness, between breakouts to blower motor & blower motor relay) s118 (4.3l)
(left rear of engine compartment) g104
(right front of engine block) g119 (2.2l)
(right rear of engine)
Frt wpr fuse 17 25a
High
Hot in accy or run
I/p fuse block (on left end of dash)
Mist
Mux1
Mux2
Off
Pulse
Red
Underhood fuse block (on top of left front fender)
Washer switch
Windshield washer pump (in washer fluid reservoir)
Windshield wiper motor (on center of firewall)
Wiper switch
Wiper/ washer switch (part of multi- function switch)

Rear Wiper/Washer Wiring Diagram for Chevrolet Blazer 2001

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List of elements for Rear Wiper/Washer Wiring Diagram for Chevrolet Blazer 2001:

(body harness, near left rear taillamp breakout) s427
(left rear body corner) g404
(no connection)
G117 (right rear of engine)
High
Hot at all times
Hot in accy & run
I/p fuse block (on left end of dash)
Logic
Low
Off
Rear window washer pump (in washer fluid reservoir)
Rear window wiper cutout & liftgate ajar jamb switch (in liftgate/ endgate, near latch)
Rear window wiper motor (on top center of rear endgate)
Rear wiper/washer switch & endgate/liftgate window release switch
Rr w/w fuse 15a
Rr wpr fuse 23 15a
Underhood fuse block (on top of left front fender)
Washer switch