All Wiring Diagrams for GMC Pickup C2000 2500

AIR CONDITIONING

5.7L

5.7L VIN R, Compressor Wiring Diagram for GMC Pickup C2000 2500

List of elements for 5.7L VIN R, Compressor Wiring Diagram for GMC Pickup C2000 2500:

(engine harn, near diode)
22 cm from ebcm breakout)
A/c comp fuse 10a
A/c compressor clutch
A/c compressor clutch relay (in underhood fuse block)
A/c compressor cycling switch (in low pressure line, on accumulator)
A/c control
A/c disable
A/c high pressure cutout switch (on a/c compressor)
A/c low pressure cutout switch (on a/c compressor)
A/c req
A/c switch
Blower switch
Diode
Fuse block
G104 (top right side of cylinder head)
G105 (right side of engine)
Hot in run
Hot in run or start
Htr a/c fuse 12 25a
Hvac control module
Ign e fuse 10a
Ignition
Near egr valve breakout)
Off
Pnk
S146 (eng harn, pnk
S185
S186
S268 (i/p harn, behind center of dash)
Sw sig
Underhood fuse block
Vehicle control module (left side of engine compt)

5.7L VIN R, Heater Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 5.7L VIN R, Heater Wiring Diagram for GMC Pickup C2000 2500:

(behind left
(hvac harn, 8 cm from recirc door breakout) s244
(i/p harn, 24 cm from i/p cluster breakout)
(right side of dash) g202
Air temp dr sensor
Battery
Blower fuse 3 50a
Blower motor (under right side of dash)
Blower resistor (on blower motor housing)
Blower switch
Defogger element
Front mode door motor (on front a/c-heater housing)
Front temperature door motor (on front a/c-heater housing)
Fuse block
G200
Ground
High blower relay (on top of front a/c- heater blower housing)
Hot at all times
Hot in run
Htr-a/c fuse 12 25a
Hvac control module
Ignition
Illumination
Interior lights system
Mode signal
Off
Rear defogger system
Recirc ctrl
Recirculation door motor (on front a/c-heater housing)
Red
S243 (hvac harn, 4 cm from recirc door breakout)
S268 (i/p harness, behind center of dash)
S298
Side of dash)
Tan
Underhood fuse/relay center

5.7L VIN R, Manual A/C Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 5.7L VIN R, Manual A/C Wiring Diagram for GMC Pickup C2000 2500:

(engine harn, near diode)
(engine harness, 22 cm from ebcm breakout, 7.4l)
(engine harness, near ebcm breakout)
(engine harness, near egr valve breakout)
(exc 4.3 l)
(fwd lamps harn, 5 cm from right headlamp breakout)
(hvac harness, 4 cm from recirc door breakout)
(i/p harn, 28 cm from cluster breakout)
(i/p harness, behind center of dash)
(right side
A/c comp fuse 10a
A/c compressor clutch
A/c compressor clutch relay (in underhood fuse/relay center)
A/c compressor cycling switch (in low pressure line, on accumulator)
A/c ctrl
A/c disable
A/c high pressure cutout switch (on a/c compressor)
A/c low pressure cutout switch (on a/c compressor)
A/c req
A/c switch
Air temp dr sensor
Aux fan fuse 30a
Auxiliary cooling fan motor
Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center)
Battery
Blower fuse 3 50a
Blower motor (under right side of dash)
Blower resistor (on blower motor housing)
Blower switch
Defogger element
Diode
Front mode door motor (on front a/c-heater housing)
Front temperature door motor (on front a/c-heater housing)
Fuse block
G104 (top right side of cylinder head)
G105 (right side of engine)
G112 (right front of engine compartment)
G200 (behind left side of dash)
G202
Ground
High blower relay (on top of front a/c-heater housing)
Hot at all times
Hot in run
Hot in run or start
Htr a/c fuse 12 25a
Hvac control module
Ign e fuse 10a
Ignition
Illumination
Interior lights system
Mode signal
Of dash)
Off
Pnk
Rear defogger system
Recirc door signal
Recirculation door motor (on front a/c-heater housing)
Red
Relay ctrl
S103
S110
S128
S146
S185
S186
S212 (i/p harn, behind center of dash)
S243
S244 (hvac harn, 8 cm from recirc door breakout)
S268
S298
Sw sig
Tan
Underhood fuse block
Vehicle control module (left side of engine compt)

6.5L

6.5L VIN F, Compressor Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 6.5L VIN F, Compressor Wiring Diagram for GMC Pickup C2000 2500:

(engine harn, near diode)
30 cm from ebcm breakout)
A/c comp fuse 10a
A/c compressor clutch
A/c compressor clutch relay (in underhood fuse/relay center)
A/c compressor cycling switch (in low pressure line, on accumulator)
A/c control
A/c disable
A/c enable
A/c high pressure cutout switch (on a/c compressor)
A/c low pressure cutout switch (on a/c compressor)
A/c switch
Blower switch
Diode
Fuse block
G105 (right side of engine)
Hot in run
Hot in run or start
Htr a/c fuse 12 25a
Hvac control module
Ign 1 fuse 10a
Ignition
Off
Pnk
Powertrain control module (behind right side of dash)
Recirc signal
Recirculation door motor (on a/c-heater housing)
S185
S186
S268 (i/p harn, behind center of dash)
Underhood fuse block

6.5L VIN F, Manual A/C Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 6.5L VIN F, Manual A/C Wiring Diagram for GMC Pickup C2000 2500:

(behind right
(engine harn,
(engine harn, near diode)
(engine harness, near ebcm breakout)
(hvac harness, 4 cm from recirc door breakout)
(hvac harness, 8 cm from recirc door breakout)
(i/p harn, 24 cm from cluster breakout)
(i/p harness, behind center of dash)
(right side of dash) g202
A/c comp fuse 10a
A/c compressor clutch
A/c compressor clutch relay (in underhood fuse center)
A/c compressor cycling switch (in low pressure line, on accumulator)
A/c ctrl
A/c disable
A/c enable
A/c high pressure cutout switch (on a/c compressor)
A/c low pressure cutout switch (on a/c compressor)
A/c switch
Air temp dr signal
Battery
Block
Blower fuse 3 50a
Blower motor
Blower resistor (under right side of dash, on heater housing)
Blower switch
Defogger element
Diode
Front mode door motor (on front a/c-heater housing)
Front temperature door motor (on front a/c-heater housing)
Fuse
Fuse block
G105 (right side of engine)
G200 (behind left side of dash)
Ground
Heater and a/c control module
High blower relay (under dash on top of heater-a/c housing)
Hot at all times
Hot in run
Hot in run or start
Htr-a/c fuse 12 25a
Ign e fuse 10a
Ignition
Illumination
Interior lights system
Mode signal
Near diode)
Off
Pnk
Powertrain control module
Rear defogger system
Recirc signal
Recirculation door motor (under dash on heater- a/c housing)
Red
S107 (engine harn, 30 cm from breakout to ebcm)
S110
S185
S186
S212 (i/p harn, behind center of dash)
S243
S244
S268
S298
Side of dash)
Tan
Underhood

7.4L

7.4L VIN J, Compressor Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 7.4L VIN J, Compressor Wiring Diagram for GMC Pickup C2000 2500:

(engine harn, near diode)
22 cm from ebcm breakout)
A/c comp fuse 10a
A/c compressor clutch
A/c compressor clutch relay (in underhood fuse block)
A/c compressor cycling switch (in low pressure line, on accumulator)
A/c control
A/c disable
A/c high pressure cutout switch (on a/c compressor)
A/c low pressure cutout switch (on a/c compressor)
A/c req
A/c switch
Blower switch
Diode
Fuse block
G104 (top right side of cylinder head)
G105 (right side of engine)
Hot in run
Hot in run or start
Htr a/c fuse 12 25a
Hvac control module
Ign e fuse 10a
Ignition
Near egr valve breakout)
Off
Pnk
S146 (eng harn, pnk
S185
S186
S268 (i/p harn, behind center of dash)
Sw sig
Underhood fuse block
Vehicle control module (left side of engine compt)

7.4L VIN J, Heater Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 7.4L VIN J, Heater Wiring Diagram for GMC Pickup C2000 2500:

(behind left
(hvac harn, 8 cm from recirc door breakout) s244
(i/p harn, 24 cm from i/p cluster breakout)
(right side of dash) g202
Air temp dr sensor
Battery
Blower fuse 3 50a
Blower motor (under right side of dash)
Blower resistor (on blower motor housing)
Blower switch
Defogger element
Front mode door motor (on front a/c-heater housing)
Front temperature door motor (on front a/c-heater housing)
Fuse block
G200
Ground
High blower relay (on top of front a/c- heater blower housing)
Hot at all times
Hot in run
Htr-a/c fuse 12 25a
Hvac control module
Ignition
Illumination
Interior lights system
Mode signal
Off
Rear defogger system
Recirc ctrl
Recirculation door motor (on front a/c-heater housing)
Red
S243 (hvac harn, 4 cm from recirc door breakout)
S268 (i/p harness, behind center of dash)
S298
Side of dash)
Tan
Underhood fuse/relay center

7.4L VIN J, Manual A/C Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 7.4L VIN J, Manual A/C Wiring Diagram for GMC Pickup C2000 2500:

(engine harn, near diode)
(engine harness, 22 cm from ebcm breakout, 7.4l)
(engine harness, near ebcm breakout)
(engine harness, near egr valve breakout)
(exc 4.3 l)
(fwd lamps harn, 5 cm from right headlamp breakout)
(hvac harness, 4 cm from recirc door breakout)
(i/p harn, 28 cm from cluster breakout)
(i/p harness, behind center of dash)
(right side
A/c comp fuse 10a
A/c compressor clutch
A/c compressor clutch relay (in underhood fuse/relay center)
A/c compressor cycling switch (in low pressure line, on accumulator)
A/c ctrl
A/c disable
A/c high pressure cutout switch (on a/c compressor)
A/c low pressure cutout switch (on a/c compressor)
A/c req
A/c switch
Air temp dr sensor
Aux fan fuse 30a
Auxiliary cooling fan motor
Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center)
Battery
Blower fuse 3 50a
Blower motor (under right side of dash)
Blower resistor (on blower motor housing)
Blower switch
Defogger element
Diode
Front mode door motor (on front a/c-heater housing)
Front temperature door motor (on front a/c-heater housing)
Fuse block
G104 (top right side of cylinder head)
G105 (right side of engine)
G112 (right front of engine compartment)
G200 (behind left side of dash)
G202
Ground
High blower relay (on top of front a/c-heater housing)
Hot at all times
Hot in run
Hot in run or start
Htr a/c fuse 12 25a
Hvac control module
Ign e fuse 10a
Ignition
Illumination
Interior lights system
Mode signal
Of dash)
Off
Pnk
Rear defogger system
Recirc door signal
Recirculation door motor (on front a/c-heater housing)
Red
Relay ctrl
S103
S110
S128
S146
S185
S186
S212 (i/p harn, behind center of dash)
S243
S244 (hvac harn, 8 cm from recirc door breakout)
S268
S298
Sw sig
Tan
Underhood fuse block
Vehicle control module (left side of engine compt)

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram, Old Style for GMC Pickup C2000 2500

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List of elements for Courtesy Lamps Wiring Diagram, Old Style for GMC Pickup C2000 2500:

(crossbody harn, approx 22 cm from left door harn breakout)
(i/p harn, approx 6 cm from i/p compt box lamp breakout) s208
(w/ rke)
Bat
Braided ground strap
Cargo door jamb switch (suburban/ utility only)
Courtesy lamps
Ctrl
Ctsy fuse 3 20a
Dome defeat
Dome lamp defeat
Door jamb
Door lock control module (in front of left rear wheelwell)
Front dome/ reading lamps
G201 (right side of dash)
G202 (behind left side of dash)
G305 (right "b" pillar)
Gages fuse 4 10a
Gnd
Headlamp & panel dimmer switch
Horn fuse 20a
Hot at all times
Hot in run, bulb test or start
I/p compart- ment box lamp
I/p fuse block
Ign sw
Interior lamp control module (under center of dash)
Lamp out
Left
Left front door courtesy lamp (if equipped)
Left front door jamb switch
Left i/p courtesy lamp
Left illuminated vanity mirror
Left rear door courtesy lamp (if equipped)
Mirrors system
Nca
Overhead console lamps circuit
Pnk
Pnk a
Pnk j
Rear dome/ reading lamps (if equipped)
Rear door jamb switch (if equipped)
Remote control door lock receiver (behind center of dash)
Right
Right front door courtesy lamp (if equipped)
Right front door jamb switch
Right i/p courtesy lamp
Right illuminated vanity mirror
Right rear door courtesy lamp (if equipped)
S113
S204
S209 (i/p harn, approx 13 cm from i/p compt box lamp breakout)
S213
S218
S242
S246
S248
S251
S262 (crossbody harn, approx 19-25 cm from seat belt switch breakout)
S312
S316
S410
S417 (4 door) (2 door) (front to rear (front to body harn, rear body approx 20 cm harn, approx into crossbody 34 cm from front harn dome lamp breakout) breakout)
S426
Underhood fuse/relay center
Underhood lamp
W/ overhead console
W/ rke
W/o overhead console
W/o rke

Instrument Illumination Wiring Diagram, Old Style (1 of 2) for GMC Pickup C2000 2500

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List of elements for Instrument Illumination Wiring Diagram, Old Style (1 of 2) for GMC Pickup C2000 2500:

(behind left side of dash)
(crossbody harn, approx 6 cm in left door harn breakout)
(floor console harn, 12 cm from cd player harn breakout) s333
(right side of dash)
Ash tray lamp
Body control module (in center console)
Exterior lights system
G201
G202
G305 (right "b" pillar)
Garage door opener lamp
Headlamp & panel dimmer switch
Hot at all times
I/p fuse block
Left front power window switch
Left rear heated seat switch
Left rear power window switch
Off
Parade mode sw
Park
Park lps fuse 9 20a
Power outside rearview mirror switch
Rear stereo controller
Rear window lockout switch
Rheo- stat
Right front power window switch
Right rear heated seat switch
Right rear power window switch
S210 (i/p harn, approx 12 cm from steering column harn breakout)
S218
S247
S251
S259
S321
S330
S336
S500
S502 (left front door harn, near tweeter)

Instrument Illumination Wiring Diagram, Old Style (2 of 2) for GMC Pickup C2000 2500

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List of elements for Instrument Illumination Wiring Diagram, Old Style (2 of 2) for GMC Pickup C2000 2500:

(6) bulbs
(behind left side of dash)
(front to rear body harn, 5 cm from auxiliary hvac fan switch breakout)
(i/p harn, near i/p cluster breakout) s217
Audio alarm module (on convenience center)
Automatic transfer case control switch (luxury) c1
Automatic transfer cash select switch
Auxiliary heater control switch (subur- ban/ utilitiy only)
Base
Cargo lamp switch (pickup only)
Conven- ience center
Daytime running lamp (drl)/ radio override switch
Daytime running lamps (drl)/ radio override switch
Display dim sig
Fog lamp switch
Front auxiliary hvac control lamp
G131 (near thermostat housing)
G201 (right side of dash)
G202
G305 (at right "b" pillar)
Headlamp & panel dimmer switch
Hot at all times
Hvac control lamp
I/p fuse block
Illum fuse 14 10a
Illumination
Inflatable restaint i/p module switch
Instrument cluster
Liftgate release switch (subur- ban/ utilitiy only)
Luxury
Off
Parade mode sw
Park
Park lps fuse 9 20a
Pickup/ extended cab only
Radio
Rear auxiliary hvac control lamp
Rear auxiliary hvac control switch
Rear window wiper/ washer switch (subur- ban/ utilitiy only)
Rheo- stat
S204
S215
S216 (i/p harn, near i/p cluster breakout)
S218
S253 (cross- body harn, near i/p harn breakout)
S259
S307
S310
Suburban & utility only
Transfer case shift illumination lamp
Transfer case switch
Z56 only

Overhead Console Lamps Wiring Diagram, Old Style Base for GMC Pickup C2000 2500

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List of elements for Overhead Console Lamps Wiring Diagram, Old Style Base for GMC Pickup C2000 2500:

(front to rear body harn, approx 34 cm from front dome lamp breakout) (2 door) s417
(under center of dash) (w/o rke) interior lamp control module
Courtesy lamps
Courtesy lamps circuit
Ctsy fuse 3 20a
Front dome/ reading lamps
G202 (behind left side of dash)
G305 (right "b" pillar)
Headlamp & panel dimmer switch
Hot at all times
I/p fuse block
Int lamp output
Int lamp output c1
Overhead console reading lamps
Rear dome/ reading lamps
Remote control door lock receiver (w/rke) (behind center of dash)
S204
S209 (i/p harn, approx 13 cm from i/p compt lamp breakout)
S246 (crossbody harn, approx 22 cm from left door harn breakout)
S320
S321
S410
S426

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 5) for GMC Pickup C2000 2500

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List of elements for Power Distribution Wiring Diagram (1 of 5) for GMC Pickup C2000 2500:

(crossbody harn, approx 22 cm from left door harness breakout)
(diesel-eng harn, 6.5cm from ebcm breakout gasoline-eng harn, 12cm from ebcm breakout)
(eng harn, approx 19cm from electronic brake control module breakout) s113
(i/p harn, near steering column harness breakout) s205
(overhead console harn, between garage door opener & reading lamp)
(stud a)
(stud b)
(vanity mirror jumper harn, approx 4 cm from inside rearview mirror)
175a
7.4l
A nca
A/c comp fuse 10a
A/c compressor clutch relay
Abs fuse 4 60a
Aux fan fuse 30a
Aux pwr auto headlap fuse 22 20a
Auxiliary cooling fan relay
Blower fuse 3 50a
Body control module (bcm)
Brake lamp relay
C13
Camp/trail fuse 30a
Cargo lamp switch
Convenience center
Ctsy fuse 3 20a
D13
Daytime running lamps relay
Diode
Drl/fog fuse 15 20a
Dual battery
Ecm-b fuse 20a
Electronic brake control module
Evo/ passlock module
Front dome lamp
Front dome lamps
Fuel pump oil pressure switch
Fuel pump relay
Fusible link (5 ga-rust)
Garage door opener
Generator (base)
Generator (uplevel)
Headlamp & panel dimmer switch
Headlamp and panel dimmer switch
Headlamp control module
Heater mirror relay
High blower motor relay
Horn fuse 20a
Horn relay
Htd mir fuse 10a
Hvac control module
I/p compartment box lamp
I/p fuse block
Interior lamp control module
Left battery (diesel)
Left courtesy lamp
Left front door courtesy lamp
Left rear door courtesy lamp
Left vanity mirror
Lighting fuse 8 50a
Luxury only
Mega fuse block
Overhead console reading lamps
Pickup only
Pk lps fuse 9 20a
Power outside rearview mirror switch
Powertrain control module (diesel)
Rear dome lamps
Red
Remote battery stud
Right battery
Right courtesy lamp
Right front door courtesy lamp
Right rear door courtesy lamp
Right vanity mirror
Rr defog fuse 30a
S101
S242 (i/p harn, 12cm from inflatable restraint switch breakout)
S248 (crossbody harn, approx 35 cm from left front door harn breakout)
S312 s312
S325
S426
S443
Security/ strg fuse 21 10a
Seo fuse 30a
Single battery (base)
Single battery (uplevel)
Spare power source
Starter motor solenoid
Stop fuse 2 50a
To fusible link (diagram 5 of 5)
To underhood fuse block (diagram 2 of 5)
Underhood fuse block
Underhood lamp
Vehicle control module (gasoline)
W/o rear auxiliary heater or a/c
W/o rke

Power Distribution Wiring Diagram (2 of 5) for GMC Pickup C2000 2500

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List of elements for Power Distribution Wiring Diagram (2 of 5) for GMC Pickup C2000 2500:

(2dr w/ rke & 4dr)
(crossbody harn, 20 cm from convenience center breakout) s255
(crossbody harn, approx 19 cm from conenience center)
(front-to-rear body harn, approx 6 cm from convenience center breakout)
(i/p harn, 12cm from steering column harness breakout) s200
(i/p harn, 4cm from auxiliary power outlet breakout)
(i/p harn, 4cm from steering column harness breakout)
(i/p harn, approx 10 cm into steering column harn breakout)
(i/p harn, left rear of engine compartment)
(luxury only)
(power lumbar seat jumper harn, approx 13 cm from right power seat breakout)
(utility only)
30a (others)
8cm from i/p cluster breakout) s264
Audio alarm module
Audio amplifier
Automatic
Automatic transfer case
Automatic transfer case control module
Aux/pwr fuse 7 25a
Base
Base cargo door
Base cargo doors/upper level liftgate
Base liftgate/ upper level cargo doors
Battery fuse 7 50a
Cargo door lock relay
Cig ltr fuse 13 20a
Cigar lighter
Convenience center
D14
D15
Data link connector
Door lock control module
Door lock relay
Electric
From underhood fuse block (diagram 1 of 5)
Front auxiliary power connector
G202 (left side of dash)
I/p fuse block
Left front door lock switch
Left front power lumbar seat switch
Left power seat adjuster switch
Liftgate release relay
Liftgate release switch
Luxury level
Luxury only
Non- base
Others
Pickup
Pickups w/o rke
Power amplifier relay (suburban)
Pwr-accy circuit breaker a (regular 20a cab/extended cab/luxury)
Radio
Radio batt fuse 19 10a
Rear auxiliary power connector (luxury)
Rear console auxiliary power connector (luxury)
Rear door lock switch
Red
Remote control door lock receiver
Remote control door lock receiver (uplevel speakers)
Right front door lock switch
Right front power lumbar seat switch
Right front power seat lumbar switch
Right lumbar power seat switch
Right power seat adjuster switch
S212
S218
S236
S237
S255
S256
S272
S299
S300
S434
Stop lamp switch
Stop/haz fuse 1 20a
Suburban/ utility
T case fuse 2 20a
To underhood fuse block (diagram 3 of 5)
Transfer case control module
Turn/ hazard switch
Underhood fuse block
Vehicle interface unit
W/ rke
W/bench seat

Power Distribution Wiring Diagram (3 of 5) for GMC Pickup C2000 2500

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List of elements for Power Distribution Wiring Diagram (3 of 5) for GMC Pickup C2000 2500:

(a/t)
(battery harn, red
(cross body harn, 8cm from convenience center breakout)
(floor console harn, 33 cm heated seat switch breakout)
(gas) (diesel)
(i/p harn, 12cm from steering column harn breakout) pnk
(i/p harn, 22 cm before radio harn breakout) s292
(i/p harn, 4 cm from steering column harn breakout) s213
(i/p harn, 8 cm from automatic transfer case module breakout)
(i/p harn, approx 8 cm from steering column harn breakout) s201
(inside left front door harn at breakout to window motor regulator)
(m/t)
(w/o rke) (w/ rke)
A j
A/t
Acc
Air bag fuse 10 10a
At left side of eng compt) s167
Audio alarm module
Automatic transmission controls
Back-up lamp switch
Body control module
C210
Clutch pedal position switch
Convenience center
Crank fuse 8 10a
Daytime running lamps module
Daytime running lamps relay
Electrochromic rearview mirror w/ compass
Evo/ passlock module
From ignition switch (diagram 3 of 5)
From underhood o
Fuse block (diagram 2 0f 5)
Gauges fuse 4 10a
Headlamp control module
Headlamp/ panel dimmer switch
I/p fuse block
Ign a fuse 6 40a 50a
Ign b fuse 5 50a
Ignition switch
Inflatable restraint i/p module switch (pickup)
Inflatable restraint sensing & diagnostic module
Instrument cluster
Interior lamp control module or remote control door lock receiver
Lock
Low coolant level indicator module (diesel)
Luxury
Luxury only
M/t
Off
Others
Park/neutral position switch
Pnk
Pnk k
Pnk s207
Power window master switch
Pwr wdo circuit breaker 30a
Radio
Radio batt fuse 17 10a
Rear stereo controller
Rear window lockout switch (4-dr)
Rear window wiper/washer switch (suburban/utility)
Red
Right front power window switch (2 dr & utility)
Rr wiper fuse 23 25a
Run
S266
S290
S501
Start
Starter relay
To s206 (diagram 5 of 5)
To s207 (diagram 3 of 5)
To underhood fuse block (diagram 4 of 5)
To underhood fuse block (diagram 5 of 5)
Trans fuse 20 10a
Transfer case control module (selectable 4wd electric shift)
Transfer case select switch
Turn b/u fuse 16 20a
Turn signal/ hazard switch
Underhood fuse block
Vehicle interface unit
Vehicle speed sensor buffer (diesel)
Windshield wiper motor module
Windshield wiper/ washer switch
Wiper fuse 11 25a

Power Distribution Wiring Diagram (4 of 5) for GMC Pickup C2000 2500

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List of elements for Power Distribution Wiring Diagram (4 of 5) for GMC Pickup C2000 2500:

(eng harn, 12 cm from fuel injector breakout)
(eng harn, 30cm from ebcm breakout)
(eng harn, approx 4 cm from i/p harn breakout) s166
(eng harn, approx 5 cm from back-up lamp switch harn breakout)
(eng harn, approx 8 cm from egr breakout)
(eng harn, s146
(in injector harn jumper)
(taillamp extension harn, approx 17 cm from fuel pump
26 cm from ebcm breakout)
5.0l, 5.7l
6.5l pnk
7.4l
7.4l w/ california emissions
A/c clutch relay
A/c compressor clutch relay
Air relay
Balance module breakout) s315
C11
C12
Crank- shaft position sensor
Diesel
Ecm 1 fuse 20a
Egr linear pwm valve solenoid
Egr solenoid
Eng-1 fuse 20a
Engine shutoff solenoid
From splice s207 k (diagram 3 of 5)
Fuel heater
Fuel injector
Fuel pump balance module
Fuel pump balance relay
Fuel solenoid driver
Glow plug relay
Ign e fuse 10a
Ignition coil
Ignition control module
Mass airflow sensor
Others
Pnk
Powertrain control module
S104
S108
S154
S155
S161
S190
Underhood fuse block
Vehicle control module
Waste gate solenoid
Water-in- fuel sensor

Power Distribution Wiring Diagram (5 of 5) for GMC Pickup C2000 2500

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List of elements for Power Distribution Wiring Diagram (5 of 5) for GMC Pickup C2000 2500:

(auxiliary a/c harn, 17cm from blower motor relays)
(crossbody harn, 20 cm from sdm breakout)
(crossbody harn, 27 cm from left rear heated seat breakout)
(crossbody harn, approx 25 cm from sdm breakout)
(eng harn, 7cm from ebcm) breakout)
(floor console harn, approx 28 cm from left heated switch breakout) s332
(hvac harn, approx 4 cm from recirculation door breakout)
(i/p harn, 6cm from steering column harness breakout)
(i/p harn, approx 7cm from inflatable restraint switch breakout) s268
(i/p harn, approx 8 cm from steering column breakout)
(luxury)
(others)
(rear hvac control harn, approx 5 cm from hvac logic module breakout) s308
(tailamp extension harn, appr0x 10 cm from breakout to ground at left side frame rail, near crossmember)
4wd fuse 24 20a
A13
Automatic transfer case control module
Automatic transfer case only
Automatic transfer case select switch
Auxiliary battery
Auxiliary battery relay (left rear of engine compt)
Auxiliary heater & a/c control logic module
Auxiliary heater & a/c control module (front)
Auxiliary heater & a/c control module (rear)
Auxiliary high blower motor relay
Auxiliary low blower motor relay
Auxiliary medium blower motor relay
Auxiliary mode door motor
Auxiliary temperature door motor
Brake fuse 18 10a
Convenience center
Cruise control module (gas only)
Cruise control switch
Cruise fuse 6 10a
Diesel
E10
Electronic brake control module
From ignition switch (diagram 3 of 5)
From underhood e fuse block (diagram 3 of 5)
From underhood fuse block (diagram 1 of 5)
Front axle actuator
Front heated seats fuse 20a
Fusible link
G100 (left front fender)
Gas, base models
Gas, except base models
Htr-a/c fuse 12 25a
Hvac control module
I/p fuse block
Left front heated seat module
Left front heated seat switch
Left rear heated seat module
Left rear heated seat switch
Luxury level
Luxury models
Mode door motor
Rear heated seats fuse 20a
Rear heater only
Rear heater w/ cargo doors
Rear heater w/ lift- gate
Recirculation door motor
Red
Right front heated seat module
Right front heated seat switch
Right rear heated seat module
Right rear heated seat switch
Rr hvac fuse 5 10a
S151
S206
S233
S235
S238
S243
S281
S324
S326
S400
Seats fuse 40a
Spare power source
Stop lamp switch
Suburban utility only
Temperature door motor
Transfer case switch (k3500)
Underhood fuse block
Vehicle control module (gas only)
W/ rear defrost

POWER DOOR LOCKS

Door Lock Wiring Diagram, with Crew Cab for GMC Pickup C2000 2500

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List of elements for Door Lock Wiring Diagram, with Crew Cab for GMC Pickup C2000 2500:

(crossbody harn, near seat belt switch breakout) s262
(crossbody harn, under left side of dash) s258
(crossbody harness, near door lock relay breakout) s256
(front to rear harness, near dome lamp harn breakout) s434
(front to rear harness, near rear window harn breakout) s431
(i/p harn, 6 cm from glove box lamp breakout)
2 door 4 door
4 door
Batt (b+)
C210
Cig ltr fuse 13 20a
Convenience center (left side of dash)
Door jamb sw
Door lock control module (front of left rear wheelhouse)
Door lock relay (under center of dash)
G201 (right side of dash)
G202 (behind left side of dash)
G305 (right "b" pillar)
Ground
Hot at all times
I/p fuse block (left side of dash)
Left front door jamb switch
Left front door lock actuator
Left front door lock switch
Left rear door jamb switch
Left rear door lock actuator
Lock
Lock sig
Pwr accy circuit breaker 30a
Rear cargo door lock actuator (cargo doors)
Rear door jamb switch
Rear door lock switch (cargo doors)
Right front door jamb switch
Right front door lock actuator
Right front door lock switch
Right rear cargo door contactor (right rear door jamb)
Right rear door jamb switch
Right rear door lock actuator
Rr door sw
S204
S208
S218
S255
S257 (crossbody harness, near door lock relay harness breakout)
S259
S260 (crossbody harness, 6 cm from seat belt switch breakout)
S261 (crossbody harness, 12 cm from seat belt switch breakout)
S264
S296
S410
S432 (front to rear harness, near left rear speaker harness breakout)
Tan
Unlock
Unlock sig

Door Lock Wiring Diagram, without Crew Cab for GMC Pickup C2000 2500

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List of elements for Door Lock Wiring Diagram, without Crew Cab for GMC Pickup C2000 2500:

(inside right door harness) s601
C210
Convenience center (under left side of dash)
G202 (behind left side of dash)
Hot at all times
I/p fuse block (under left side of dash)
Left front door lock motor
Left front door lock switch
Lock
Pwr accy circuit breaker 20a
Right front door lock motor
Right front door lock switch
S255
S500
S600 (inside right door harness)
Solid state
Tan
Unlock

Keyless Entry Wiring Diagram for GMC Pickup C2000 2500

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List of elements for Keyless Entry Wiring Diagram for GMC Pickup C2000 2500:

(cross body harness, 6cm from seat belt switch breakout)
(crossbody harn, near seat belt switch breakout) s262
(crossbody harn, under left side of dash) s258
(front to rear harness, near rear window harn breakout) s431
(i/p harn, 6 cm from glove box lamp breakout)
(regular/extended cab) (except regular/extended cab)
(utility w/ cargo doors)
1576 (or 56)
2 door
4 door
640 (or 540)
Batt (b+)
C210
Cargo door jamb switch
Cargo door lock switch (w/ cargo doors)
Cig ltr fuse 13 20a
Convenience center (left side of dash)
Data link connector (under left side of dash)
Dome lamps
Dome lmp off
Door jamb sw
Door lock control module (front of left rear wheelwell)
Door lock relay (under center of dash, near remote control door lock receiver)
Driver dr unlk
G201 (behind right side of dash)
G201 (right side of dash)
G305 (right "b" pillar)
Gauges fuse 4 10a
Ground
Horn ctrl
Horns system
Hot at all times
Hot in run, bulb test or start
I/p fuse block (left side of dash)
Ignition
Interior lamps system
Left front door jamb switch
Left front door lock actuator
Left front door lock switch
Left rear door jamb switch
Left rear door lock actuator
Lock
Lock out
Lock sig
Pass drs unlk
Pnk
Program sig
Pwr accy circuit breaker 20a 30a
Rear cargo door lock actuator (cargo doors)
Remote control door lock receiver (behind center of dash)
Right front door jamb switch
Right front door lock actuator
Right front door lock switch
Right rear cargo door contactor (right rear door jamb)
Right rear door jamb switch
Right rear door lock actuator
Rr door sw
Rr lftgte unlk
S204
S208
S213
S218
S251
S255
S256
S257 (crossbody harness, near door lock relay harness breakout)
S259
S261 (crossbody harness, 7 cm from seat belt switch harn breakout)
S264 (suburban/ utility)
S296 (luxury)
S410
S432 (front to rear harness, near left rear speaker harness breakout)
S434
Tan
Trunk, tail- gate, fuel doors system
Unlock
Unlock out
Unlock sig
Utility w/ rear cargo doors
Utility w/ rear liftgate
W/ cargo doors
W/ liftgate
W/ power windows
W/o power windows

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for GMC Pickup C2000 2500

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List of elements for Electrochromic Mirror Wiring Diagram for GMC Pickup C2000 2500:

(behind left side of dash) g202
(eng harn, near breakout to ebcm)
(luxury)
A/t
Ambient sensor (windshield side)
Back-up lamp switch (on left side of trans- mission)
Back-up lamp switch (part of park/neutral position switch) (on left side center of transmission)
C/m
C1 f
Exterior lights system
Gauges fuse 4 10a
Ground
Headlamp sensor (mirror side)
Headlight control module signal
Headlights system
Hot in run or start
I/p fuse block (under left side of dash)
Inside automatic day-night mirror
Left outside automatic day-night mirror (luxury)
M/t
Mirror input
Mirrors switch
Nca
Off
On indicator control
Pnk
Power distribution system
Reset to daytime high reflectivity in reverse
Right outside automatic day-night mirror (luxury)
S160
S213
S279 (crossbody harness, approx 38 cm from convenience center pnk breakout)
S316
Solid state
Switch breakout) s278
T/m
Temperature sensor (behind center grille)
Turn b/u fuse 16 20a

Power Mirror Wiring Diagram for GMC Pickup C2000 2500

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List of elements for Power Mirror Wiring Diagram for GMC Pickup C2000 2500:

(except upper level)
(inside left front door harness)
(inside right front door harness)
(right side of dash) g201
(upper level)
Automatic day-night sensor (upper level)
C a
Ctsy fuse 3 20a
D d
Defogger system (heated mirror)
Down
E c
Electro- chromic mirror circuit
F b
Heating element (upper level)
Hot at all times
I/p fuse block
Interior lights system
Left
Left power outside rearview mirror
Left/ right motor
Pnk
Power outside rearview mirror switch
Right
Right power outside rearview mirror
S248
S251
S503
Up/ down motor

POWER SEATS

6-Way Power Seat Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 6-Way Power Seat Wiring Diagram for GMC Pickup C2000 2500:

(regular/extended cab) (except regular extended cab)
(right side of dash)
Back
Forward/ rearward motor
Front dn
Front tilt motor
Front up
Fwd
G201
Hot at all times
I/p fuse block
Left power seat adjuster switch
Pwr-accy circuit breaker 20a 30a
Rear dn
Rear tilt motor
Rear up
Right power seat adjuster switch
S227
S228
S255
Tan

Front Seat Heater Wiring Diagram for GMC Pickup C2000 2500

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List of elements for Front Seat Heater Wiring Diagram for GMC Pickup C2000 2500:

(cross body harn, left side of dash, near convenience center)
(left heated seat harn, near heated seat control module breakout)
(not used)
Batt
C236
Convenience center
Front heated seats fuse 20a
G201 (right side of dash)
Gnd
Heated seat sw sig
High/low sig
Hot at all time
Hot in run
I/p fuse block
Indicator lmp feed
Left front heated seat module (under left front power seat)
Left front heated seat switch
Left front seat back element
Left front seat cushion
Left front seat cushion element
Left front seat temper- ature sensor
Off
Right front heated seat module (under right front power seat)
Right front heated seat switch
Right front seat back element
Right front seat bealt switch
Right front seat cushion
Right front seat cushion element
Right front seat temper- ature sensor
Rr hvac fuse 5 10a
S227
S233
S238
S259
S273
S274
S277
S278
Sig enable
Underhood fuse/relay center

Lumbar Wiring Diagram, with Bucket Seat for GMC Pickup C2000 2500

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List of elements for Lumbar Wiring Diagram, with Bucket Seat for GMC Pickup C2000 2500:

(w/ regular/extended cab) (except regular extended cab)
C210 c
Convenience center
G201 (right side of dash)
Hot at all times
I/p fuse block
Left front power lumbar seat switch
Left front power lumbar support motor
Left lumbar solenoid
Pwr-accy circuit breaker 20a 30a
Right front power lumbar seat switch
Right front power lumbar support motor
Right lumbar solenoid
S227
S228
S237
S241
S259
Tan

Lumbar Wiring Diagram, without Bucket Seat for GMC Pickup C2000 2500

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List of elements for Lumbar Wiring Diagram, without Bucket Seat for GMC Pickup C2000 2500:

C210 b
Cig ltr fuse 13 20a
Convenience center
G201 (right side of dash)
Hot at all times
I/p fuse block
Left front power lumbar seat switch
Left front power lumbar support motor
Left lumbar solenoid
Red
Right front power lumbar seat switch
Right front power lumbar support motor
Right lumbar solenoid
S227
S228
S256
S259
S264 (suburban utility only)
Tan
W/ split bench seat
W/o split bench seat

POWER WINDOWS

Power Window Wiring Diagram, 2 Door for GMC Pickup C2000 2500

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List of elements for Power Window Wiring Diagram, 2 Door for GMC Pickup C2000 2500:

Auto window down module
Convenience center (under left side of dash)
Down
G201 (right side of dash)
Hot in run
I/p fuse block (under left side of dash)
Interior lights system
Left front
Left front window motor
Left power window master switch
Pwr wdo circuit breaker 30a
Right front
Right front window motor
Right front window switch
S251
S259
S266
S500
S501
Solid state
Tan

Power Window Wiring Diagram, 4 Door for GMC Pickup C2000 2500

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List of elements for Power Window Wiring Diagram, 4 Door for GMC Pickup C2000 2500:

Convenience center (under left side of dash)
Down
G201 (right side of dash)
Headlamp & panel dimmer switch
Hot at all times
Hot in run
I/p fuse block (under left side of dash)
Left front
Left front power window master switch
Left front window motor
Left rear
Left rear window motor
Left rear window switch
Pk lps fuse 20a
Pwr wdo circuit breaker 30a
Right front
Right front window motor
Right front window switch
Right rear
Right rear window motor
Right rear window switch
S247 (crossbody harn, approx 6 cm into left door harn breakout)
S251
S259
S263
S500
S501
S502 (inside left front door harness, approx 4 cm from tweeter breakout)
Solid state
Tan
Window lockout switch

RADIO

Radio Wiring Diagrams, with Amplifier for GMC Pickup C2000 2500

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List of elements for Radio Wiring Diagrams, with Amplifier for GMC Pickup C2000 2500:

(left side of dash) data link connector
(lf door harn, near window reg breakout)
(rf door harn, near door lock motor breakout)
Amp feed
Antenna
Audio rtn
Bare
Battery
Cig ltr fuse 13 20a
Diesel
Dim
Dim feed
Display dim
Drain rtn
E&c diag
Fuse out
G201 (right side of dash)
G202 (left side of dash)
Gas
Ground
Hot at all times
Hot in acc or run
I/p fuse block
Interior lights system
Left front speaker
Left front tweeter
Left rear door speaker
Left rear speaker
Lf +
Lf -
Lr +
Lr dr +
Lr dr -
Lr _
Lr+
Lr-
Lt audio
Lt remote
Nca
Pnk
Power amplifier (under left side of dash)
Power amplifier relay (under left side of dash)
Radio
Radio batt fuse 19 10a
Radio fuse 17 10a
Red
Remote audio player
Remote rtn
Rf +
Rf -
Right front speaker
Right front tweeter
Right rear door speaker
Right rear speaker
Rly sig
Rr +
Rr -
Rr dr +
Rr dr -
Rr+
Rr-
Rt audio
Rt remote
S221
S249
S250
S251
S252
S254
S256
S259
S298
S504
S505
S603
S604
Serial data
Tan
Tape ctrl
Vehicle control module (left side of engine compartment)
Vehicle speed sensor buffer (behind right side of dash)
Vss signal

Radio Wiring Diagrams, without Amplifier for GMC Pickup C2000 2500

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List of elements for Radio Wiring Diagrams, without Amplifier for GMC Pickup C2000 2500:

(left side of dash) data link connector
(lf door harn, near window reg breakout)
(rf door harn, near door lock motor breakout)
Amp feed
Antenna
Audio rtn
Bare
Battery
Diesel
Dim
Dim feed
Display dim
Drain rtn
E&c diag
Fuse out
G202 (left side of dash)
Gas
Ground
Hot at all times
Hot in acc or run
I/p fuse block
Interior lights system
Left front speaker
Left front tweeter
Left rear speaker
Lf +
Lf -
Lr +
Lr _
Lt audio
Lt remote
Nca
Pnk
Radio
Radio batt fuse 19 10a
Radio fuse 17 10a
Remote audio player
Remote rtn
Rf +
Rf -
Right front speaker
Right front tweeter
Right rear speaker
Rr +
Rr -
Rt audio
Rt remote
S221
S298
S504
S505
S603
S604
Serial data
Tan
Tape ctrl
Vehicle control module (left side of engine compartment)
Vehicle speed sensor buffer (behind right side of dash)
Vss signal

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for GMC Pickup C2000 2500

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List of elements for Shift Interlock Wiring Diagram for GMC Pickup C2000 2500:

Automatic transmission shift lock control (btsi) solenoid (right side of steering column)
G202 (behind left side of dash)
Hot in run or start
I/p fuse block
Park/ neutral position switch (left side of transmission)
Pnk
S204
Transfer case control module (under dash on steering column support bracket)
Turn/ hazard switch
Turn/bu fuse 16 20a
W/ electric shift transfer case

STARTING/CHARGING

5.7L

5.7L VIN R, Charging Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 5.7L VIN R, Charging Wiring Diagram for GMC Pickup C2000 2500:

(dash harness, approximately 4 cm (1.5 in) from steering pnk
(on right front of engine block) g119
(right front wheelhouse) g101
175a
All others
Battery
Charge warning indicator
Column harness breakout, towards data link connector) s213
Fusible link
Gauges fuse 4 20a
Generator
Hot in run & start
I/p fuse block (under left side of dash)
Instrument cluster
Mega fuse block (on right front of engine compartment, near battery)
Pnk
Power distribution system
Red
Uplevel/ enhanced

5.7L VIN R, Starting Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 5.7L VIN R, Starting Wiring Diagram for GMC Pickup C2000 2500:

(on left rear of engine compartment) fuse/relay block
175a
A/t
Acc
Battery
Bulb test
Clutch pedal position switch (on top of clutch pedal bracket)
Crank fuse 8 10a
G101 (right front wheel house)
G119 (on right front of engine block)
I/p fuse block (under left side of dash)
Ign a fuse 6 40a
Ignition switch
Lock
M/t
Mega fuse block (on right front of engine compartment, near battery)
Off
Park/ neutral position switch (on left side, center of transmission)
Red
Remote battery stud
Run
S107
Start
Starter motor
Starter relay
Starter solenoid

6.5L

6.5L VIN F, Charging Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 6.5L VIN F, Charging Wiring Diagram for GMC Pickup C2000 2500:

(alternator jumper harness, approximately 18 cm (7 in) from right generator)
100a b
100a/105a b
124a l
175a
All others
Charge warning indicator
Fusible link
G101 (right front wheelhouse)
G110 (left front of intake manifold)
G117 (right rear of cylinder head)
Gauges fuse 4 10a
Generator
Generator (w/ dual generators)
Hot in run & start
I/p fuse block (under left side of dash)
Instrument cluster
Left battery
Mega fuse block (right front of engine compt, near battery)
Nca
Pnk
Power distribution system
Red
Right battery
S213
Uplevel/ enhanced

6.5L VIN F, Starting Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 6.5L VIN F, Starting Wiring Diagram for GMC Pickup C2000 2500:

A/t
Acc
Bulb test
Clutch pedal position switch (on top of clutch pedal bracket)
Crank fuse 8 10a
Fuse/relay block (on left rear of engine compartment)
G101 (right front wheel- house)
G110 (left front of intake manifold)
G117 (right rear of cylinder head)
I/p fuse block (under left side of dash)
Ign a fuse 6 40a
Ignition switch
Left battery
Lock
M/t
Off
Park/ neutral position switch (on left side, center of transmission)
Red
Remote battery stud
Right battery
Run
S107
Start
Starter motor
Starter relay
Starter solenoid

7.4L

7.4L VIN J, Charging Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 7.4L VIN J, Charging Wiring Diagram for GMC Pickup C2000 2500:

(dash harness, approximately 4 cm (1.5 in) from steering pnk
(on right front of engine block) g119
(right front wheelhouse) g101
175a
All others
Battery
Charge warning indicator
Column harness breakout, towards data link connector) s213
Fusible link
Gauges fuse 4 20a
Generator
Hot in run & start
I/p fuse block (under left side of dash)
Instrument cluster
Mega fuse block (on right front of engine compartment, near battery)
Pnk
Power distribution system
Red
Uplevel/ enhanced

7.4L VIN J, Starting Wiring Diagram for GMC Pickup C2000 2500

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List of elements for 7.4L VIN J, Starting Wiring Diagram for GMC Pickup C2000 2500:

(on left rear of engine compartment) fuse/relay block
175a
A/t
Acc
Battery
Bulb test
Clutch pedal position switch (on top of clutch pedal bracket)
Crank fuse 8 10a
G101 (right front wheel house)
G119 (on right front of engine block)
I/p fuse block (under left side of dash)
Ign a fuse 6 40a
Ignition switch
Lock
M/t
Mega fuse block (on right front of engine compartment, near battery)
Off
Park/ neutral position switch (on left side, center of transmission)
Red
Remote battery stud
Run
S107
Start
Starter motor
Starter relay
Starter solenoid

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for GMC Pickup C2000 2500

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List of elements for Supplemental Restraint Wiring Diagram for GMC Pickup C2000 2500:

(behind left kick panel) g200
(behind left kick panel) g202
(behind left side of dash) g202
(crossbody harness, approximately 7 cm (2.5 inches) into seat belt switch) s259
(i/p harness, approximately 16 cm (6 inches) from instrument cluster harness, breakout, towards cigar lighter harness breakout) s218
(i/p harness, approximately 4 cm (1.5 inches) from steering column harness breakout, towards data link connector (dlc)) s213
(sir harness, 35 cm (13.5 inches) before inflatable restraint sensing & diagnostic module (sdm) s276
(sir harness, 35 cm (13.5 inches) before mobile communications, system wire breakout, towards inflatable restraint sensing & diagnostic module (sdm))
Air bag fuse 10 10a
Air bag indicator
Air bag indicator ctrl
Audio alarm module
Convenience center (under left side of dash)
Data link connector (dlc) (partial) (under left side of dash, left of steering column)
Disc sensor input
Driver seat belt
Driver side high
Driver side low
Gauges fuse 4 10a
Ground
Hot in run & start
I/p fuse block (under left side of dash)
Ignition
Inflatable restraint front end discriminating sensor (under front outside center of radiator)
Inflatable restraint ip module
Inflatable restraint ip module switch (pick up only)
Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat carpet)
Inflatable restraint steering wheel module
Inflatable restraint steering wheel module coil
Instrument cluster
Interior lights system
Off
Ohms
Pass airbag disable
Pass airbag enable
Pass side high
Pass side low
Pnk
S282
Seat belt switch (closed w/seat belt unbuckled) (on driver's seat belt buckle)
Serial data (uart)
Shorting bar
Tan
W/luxury package
W/o luxury package

TRANSMISSION

5.7L

5.7L VIN K, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500

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List of elements for 5.7L VIN K, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500:

(dash harn, 20 cm from breakout to inflatable restraint sw)
(engine harn, 16 cm from egr breakout)
(engine harn, 6.5 cm from breakout to ebcm)
(on brake pedal bracket) stoplamp switch
1-2 shift sol
1-2 shift solenoid
2-3 shift sol
2-3 shift solenoid
2wd
3-2 ctrl solenoid
3-2 downshift sol
4wd
4wd circuit (transfer case & axle switches)
4wd low signal in
5v reference
Anti-lock brakes system
Automatic transmission (4l60-e)
Battery in
Brake fuse 18 10a
Brake switch input
Breakout to egr valve)
Cruise control
D3, d2
D4, d2
Data class ii
Data link connector (under left side of dash)
Ecm 1 fuse 20a
Ecm b fuse 20a
Ect sens input
Electronic brake control module
Engine controls
Engine coolant temperature sensor (top right front of engine)
Fluid temp sensor
Front wheel lock
Fuel injectors, ignition control moudule & ignition coil
Fuel pump & oil press switch/ sender & fuel pump relay
G120 (right rear of cylinder head)
Gauges fuse 4 10a
Hot at all times
Hot in off, run or start
Hot in run
Hot in run or start
I/p fuse block (under left side of dash)
Ignition in
Inline gender adaptor
Instrument cluster
Malfunction indicator lamp
Mil control
Pcm ground
Pcs sol hi out
Pcs sol lo out
Pnk
Press ctrl solenoid
Range signal "a"
Range signal "b"
Range signal "c"
Red
Rev, lo
S101
S103
S150 (engine harn, 13 cm from breakout to ebcm)
S151
S152
S161
S213
S222
S231
Sensor ground
Sensor return
Tan
Tcc pwm sol
Tcc pwm solenoid
Tcc sol
Tcc solenoid
Tcc/abs/ cruise switch
Throttle position sensor (mounted to side of throttle body)
Tp sens input
Trans fuse 20 10a
Trans range pressure switch assembly
Trans temp sig in
Transfer case circuit
Underhood fuse/relay center (left rear of engine compt)
Vehicle control module (left side of engine compt)
Vehicle speed sensor (left side of transmission-2wd) (left side of transfer case-4wd)
Vss hi (signal)
Vss lo (ground)

5.7L VIN R, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500

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List of elements for 5.7L VIN R, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500:

(dash harn, 20 cm from breakout to inflatable restraint sw)
(engine harn, 16 cm from egr breakout)
(engine harn, 6.5 cm from breakout to ebcm)
(on brake pedal bracket) stoplamp switch
1-2 shift sol
1-2 shift solenoid
2-3 shift sol
2-3 shift solenoid
2wd
3-2 ctrl solenoid
3-2 downshift sol
4wd
4wd circuit (transfer case & axle switches)
4wd low signal in
5v reference
Anti-lock brakes system
Automatic transmission (4l60-e)
Battery in
Brake fuse 18 10a
Brake switch input
Breakout to egr valve)
Cruise control
D3, d2
D4, d2
Data class ii
Data link connector (under left side of dash)
Ecm 1 fuse 20a
Ecm b fuse 20a
Ect sens input
Electronic brake control module
Engine controls
Engine coolant temperature sensor (top right front of engine)
Fluid temp sensor
Front wheel lock
Fuel injectors, ignition control moudule & ignition coil
Fuel pump & oil press switch/ sender & fuel pump relay
G120 (right rear of cylinder head)
Gauges fuse 4 10a
Hot at all times
Hot in off, run or start
Hot in run
Hot in run or start
I/p fuse block (under left side of dash)
Ignition in
Inline gender adaptor
Instrument cluster
Malfunction indicator lamp
Mil control
Pcm ground
Pcs sol hi out
Pcs sol lo out
Pnk
Press ctrl solenoid
Range signal "a"
Range signal "b"
Range signal "c"
Red
Rev, lo
S101
S103
S150 (engine harn, 13 cm from breakout to ebcm)
S151
S152
S161
S213
S222
S231
Sensor ground
Sensor return
Tan
Tcc pwm sol
Tcc pwm solenoid
Tcc sol
Tcc solenoid
Tcc/abs/ cruise switch
Throttle position sensor (mounted to side of throttle body)
Tp sens input
Trans fuse 20 10a
Trans range pressure switch assembly
Trans temp sig in
Transfer case circuit
Underhood fuse/relay center (left rear of engine compt)
Vehicle control module (left side of engine compt)
Vehicle speed sensor (left side of transmission-2wd) (left side of transfer case-4wd)
Vss hi (signal)
Vss lo (ground)

6.5L

6.5L VIN F, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500

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List of elements for 6.5L VIN F, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500:

(dash harn, 16 cm from cluster breakout)
(engine harn, 4 cm fromt breakout to cluster)
(on brake pedal bracket) stoplamp switch
(top rear of right cyl head)
1-2 shift sol
1-2 shift solenoid
2-3 shift sol
2-3 shift solenoid
2wd
4wd
4wd sig
A/t iss sens hi
A/t iss sens in
A/t iss sens lo
A/t iss sensor
A12
Accelerator pedal position module (part of accelerator pedal)
App 1 5v ref
App 1 signal in
App 2 5v ref
App 2 signal in
App 3 5v ref
App 3 signal in
Automatic transmission (4l80-e)
Automatic transmission input shaft speed sensor (left front of transmission)
B10
B12
Battery in
Brake fuse 18 10a
Brake switch in
C11
C12
C13
C14
C15
Class ii data
D11
D12
D13
D3, d2
D4, d2
Data link connector (under left side of dash)
Ecm 1 fuse 20a
Ecm b fuse 20a
Ect sensor in
Electronic brake control module
Engine controls system
Engine coolant temperature sensor (near thermostat housing)
Engine shutoff solenoid, fuel solenoid
Exterior lights
From breakout to steering column)
Fuel pump & oil press switch/ sender & fuel pump relay
G117
Gauges fuse 4 10a
Ground
Hot at all times
Hot in run
Hot in run or start
I/p fuse block (under left side of dash)
Ignition in
Inline gender adaptor
Instrument cluster
Malfunction indicator lamp
Mil control
Pcm ground
Pcs sol hi out
Pcs sol lo out
Pnk
Power
Powertrain control module (right side of dash near blower motor)
Press ctrl solenoid
Red
Rev, lo
S101
S103
S140
S150 (engine harn, 13 cm from breakout to ebcm)
S152
S166
S170
S211
S213
S215
S299
Sensor ground
Stop/haz fuse 1 20a
Stoplamp switch
Tan
Tcc pwm sol
Tcc pwm solenoid
Tft sensor in
Trans fluid temp sensor
Trans fuse 20 20a
Trans range
Trans range "a"
Trans range "b"
Trans range "c"
Trans range pressure switch assembly
Transfer case circuit
Turn/ hazard switch & chime module
Underhood fuse/relay center (left rear of engine compt)
Vehicle speed sensor (left side of transmission-2wd left side of transfer case-4wd)
Vehicle speed sensor buffer (right side of dash)
Vss hi (signal)
Vss in
Vss lo (ground)
Vss out

7.4L

7.4L VIN J, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500

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List of elements for 7.4L VIN J, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500:

(5.7l) (7.4l)
(dash harn, 20 cm from breakout to inflatable restraint sw)
(engine harn, 16 cm from egr breakout)
(engine harn, 6.5 cm from breakout to ebcm)
(on brake pedal bracket) stoplamp switch
1-2 shift sol
1-2 shift solenoid
2-3 shift sol
2-3 shift solenoid
2wd
4wd
4wd circuit (transfer case & axle switches)
4wd low signal in
5v reference
A/t iss hi in
A/t iss lo in
Anti-lock brakes system
Automatic transmission (4l80-e)
Automatic transmission input shaft speed sensor (if equipped) (on transmission)
Battery in
Brake fuse 18 10a
Brake switch input
Breakout to egr valve)
Cruise control
D3, d2
D4, d2
Data class ii
Data link connector (under left side of dash)
Ecm 1 fuse 20a
Ecm b fuse 20a
Ect sens input
Electronic brake control module
Engine controls
Engine coolant temperature sensor (top right front of engine)
Fluid temp sensor
Front wheel lock
Fuel injectors, ignition control moudule & ignition coil
Fuel pump & oil press switch/ sender & fuel pump relay
G120 (top of right cylinder head)
Gauges fuse 4 10a
Hot at all times
Hot in off, run or start
Hot in run
Hot in run or start
I/p fuse block (under left side of dash)
I/p fuse block (under left side of dsah)
Ignition in
Inline gender adaptor
Instrument cluster
Malfunction indicator lamp
Mil control
Pcm ground
Pcs sol hi out
Pcs sol lo out
Pnk
Press ctrl solenoid
Range signal "a"
Range signal "b"
Range signal "c"
Red
Rev, lo
S101
S103
S150 (engine harn, 13 cm from breakout to ebcm)
S151
S152
S161 s104
S213
S222
S231
Sensor ground
Sensor return
Tan
Tcc pwm sol
Tcc pwm solenoid
Tcc/abs/ cruise switch
Throttle position sensor (mounted to side of throttle body)
Tp sens input
Trans fuse 20 10a
Trans range pressure switch assembly
Trans temp sig in
Transfer case circuit
Underhood fuse/relay center (left rear of engine compt)
Vehicle control module (left side of engine compt)
Vehicle speed sensor (left side of transmission-2wd) (left side of transfer case-4wd)
Vss hi (signal)
Vss lo (ground)