AIR CONDITIONING – Chevrolet Tahoe 2000 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram, New Style (1 of 2) for Chevrolet Tahoe 2000

List of elements for Automatic A/C Wiring Diagram, New Style (1 of 2) for Chevrolet Tahoe 2000:

• 4.3l
• 5 volt ref
• A/c automatic recirculating switch (in a/c muffler hose)
• A/c compressor clutch
• A/c compressor clutch relay
• A/c dat
• A/c fuse 10a
• A/c high pressure cutout switch (on a/c compressor)
• A/c low pressure cycling switch (right side of accumulator)
• A/c request
• A/i fbk
• A/i mtr
• All others
• Battery
• Blwr mtr cntrl
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C3 c3
• Class 2 data
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (dlc) (under left side of dash)
• Engine wiring harness junction block
• Front
• Front blower motor assembly (right side of dash)
• Front hvac control module (in center of dash, under radio)
• Front mode door motor (left side of hvac module)
• Front temperature door motor (near bottom of hvac module)
• Frt hvac fuse 30a
• Fuse block
• G100 (on left radiator support bracket)
• G110 (all others) (left front of engine)
• G119 (4.3l) (right front of eng)
• G203 (right side dash, at "a" pillar)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Htr dat
• Hvac 1 fuse 10a
• I/p wiring harness junction block
• Ign e fuse 10a
• Ignition
• Mode fbk
• Mode mtr
• O/s air temp
• Pcat
• Powertrain control module (pcm) (left side of engine compt)
• Radio fuse 15a
• Recirculation door motor (top of hvac module)
• Red
• Relay cont
• S101 (forward lamp harness)
• S102 (engine harn)
• Sensor rtn
• Serial data
• Solar
• Solid state
• Splice pack sp205 (left side of dash)
• Switch sig
• Temp fbk
• Temp mtr

Automatic A/C Wiring Diagram, New Style (2 of 2) for Chevrolet Tahoe 2000

List of elements for Automatic A/C Wiring Diagram, New Style (2 of 2) for Chevrolet Tahoe 2000:

• (if equipped) harness adaptor
• A/c dat
• A10
• A11
• A12
• Agnd
• B10
• B11
• B12
• Body wiring harness junction block
• Dim
• Engine wiring harness junction block
• Ffan
• Fmode
• Front a/c temperature sensor (in hvac duct assembly behind the driver right air deflector)
• Front heater temperature sensor
• Ftemp
• Fuse block
• G203 (right side dash, at "a" pillar)
• G999 (right "d" pillar)
• Gnd
• Harness adaptor (if equipped)
• Hot at all times
• Hot in run
• Hot in run & start
• Htr dat
• I/p wiring harness junction block
• Ign 1 fuse 10a
• Ign 3 fuse 10a
• Ignition
• Inside air temperature sensor (in headliner above driver)
• Interior lights system
• Kdd clk
• Kdd data
• Mode fbk
• Mode mtr
• Motor rtn
• Nca
• Outside ambient temperature sensor (in right front bumper filler assembly)
• Pnk
• Pwm blower
• Rear a/c temperature sensor (near right "c" pillar)
• Rear auxiliary hvac control (front) (in over head console)
• Rear blower motor assembly (in right rear side panel, above wheelwell)
• Rear heater temperature sensor (near right "c" pillar)
• Rear hvac control module (rear of center console)
• Rear mode door motor (left side of rr hvac cntrl mod)
• Rear temperature door motor (near bottom center of rear hvac control module)
• Rr hvac fuse 30a
• Sensor rtn
• Slice pack sp410a
• Solid state
• Splice pack sp203
• Sun load temperature sensor (top center of dash)
• Tan
• Temp fbk
• Temp mtr
• Vcc
• Vref

Compressor Wiring Diagram, New Style for Chevrolet Tahoe 2000

List of elements for Compressor Wiring Diagram, New Style for Chevrolet Tahoe 2000:

• 4.3l
• A/c compressor clutch
• A/c compressor clutch relay
• A/c fuse 10a
• A/c high pressure cutout switch (on a/c compressor)
• A/c high pressure recirculating switch (in a/c muffler hose)
• A/c low pressure cycling switch (on a/c compressor)
• A/c request
• A/c switch
• All others
• G100 (on left radiator support bracket)
• G110 (4.8l, 5.3l, 6.0l) (left front of engine)
• G119 (4.3l) (right front of engine)
• Hot at all times
• Hot in run or start
• Hvac control module
• Ign e fuse 10a
• Powertrain control module (pcm) (left front of engine compt)
• Press switch a/c high
• Relay ctrl a/c comp
• S101 (forward lamp harn)
• S102 (engine harn)
• Underhood junction block (left side of engine compt, near battery)

Compressor Wiring Diagram, Old Style for Chevrolet Tahoe 2000

List of elements for Compressor Wiring Diagram, Old Style for Chevrolet Tahoe 2000:

• (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)

Heater Wiring Diagram, Old Style for Chevrolet Tahoe 2000

List of elements for Heater Wiring Diagram, Old Style for Chevrolet Tahoe 2000:

• (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

Heater Wiring Diagram, Old Style Auxiliary for Chevrolet Tahoe 2000

List of elements for Heater Wiring Diagram, Old Style Auxiliary for Chevrolet Tahoe 2000:

• (aux hvac harn, near rear hvac control module)
• (front)
• (hvac harn, 8 cm from recirc door breakout) s244
• (i/p harn, 24 cm from i/p cluster breakout)
• (in front of overhead console)
• Air temp dr sensor
• Auxiliary blower motor (behind right rear wheelwell)
• Auxiliary blower motor relay, high (on auxiliary a/c plenum)
• Auxiliary blower motor relay, low (on auxiliary a/c plenum)
• Auxiliary blower motor relay, medium (on auxiliary a/c plenum)
• Auxiliary blower motor resistor (on auxiliary a/c plenum)
• Auxiliary heater control module
• Auxiliary heater control module (rear) (behind left side of dash)
• Battery
• Blower fuse 3 50a
• Blower motor (under right side of dash)
• Blower resistor (on blower motor housing)
• Blower switch
• C 1995 vftc
• Convenience center
• Defogger element
• Front mode door motor (on front a/c-heater housing)
• Front temperature door motor (on front a/c-heater housing)
• G200 (behind left side of dash)
• G202 (right side of dash)
• G400 (on right side "b" pillar, near door striker)
• Ground
• High
• 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
• I/p fuse block
• Ignition
• Illumination
• Interior lights system
• Low
• Med
• Mega fuse block
• Mode signal
• Off
• Rear
• Rear defogger system
• Recirc ctrl
• Recirculation door motor (on front a/c-heater housing)
• Red
• Red e
• Rr hvac\ fuse 5 10a
• S110 (engine harness, near ebcm breakout)
• S243 (hvac harn, 4 cm from recirc door breakout)
• S268 (i/p harness, behind center of dash)
• S298
• S305
• S306
• S309
• S401 red (aux hvac harn, 13 cm from blower relay breakout)
• S410 (body harn near rr door jamb switch breakout)
• Tan

Manual A/C Wiring Diagram, New Style Front for Chevrolet Tahoe 2000

List of elements for Manual A/C Wiring Diagram, New Style Front for Chevrolet Tahoe 2000:

• 4.3l
• A a/c disable
• A/c compressor clutch
• A/c compressor clutch relay
• A/c fuse 10a
• A/c high press sw
• A/c high pressure cutout switch (on a/c compressor)
• A/c high pressure recirculating switch (in a/c muffler hose)
• A/c request
• A/c switch
• Air temperature actuator (bottom center of hvac module)
• All others
• B mode signal
• Blower motor (under right side of dash)
• Blower motor resistor assembly (on hvac module, near blower motor)
• Blower relay
• C ground
• C3 c3
• D recirc signal
• D12
• Defogger system
• E illumination
• F temp signal
• Frt hvac fuse 30a
• Fuse block (lower left side of dash)
• G feedback
• G100 (on left radiator support bracket)
• G110 (4.8l, 5.3l, 6.0l) (left front of engine)
• G119 (4.3l) (right front of eng)
• G203 (right side dash, at "a" pillar)
• H 5v reference
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 25a
• Hvac 1 fuse 10a
• Hvac control module (under radio)
• I/p junction block (lower right side of dash)
• Ign e fuse 10a
• Interior lights system
• J rear defog
• K ign power
• L a/c request
• M feedback
• Mode actuator (left side of hvac module)
• Off
• Powertrain control module (pcm) (left side of engine compt)
• Recirculation actuator (top of hvac module)
• Red
• Relay ctrl a/c comp
• S101 (forward lamp harness)
• S102 (engine harn)
• Tan
• Underhood junctioin block (left side of engine compt, near battery)

Manual A/C Wiring Diagram, New Style Rear with A/C Only for Chevrolet Tahoe 2000

List of elements for Manual A/C Wiring Diagram, New Style Rear with A/C Only for Chevrolet Tahoe 2000:

• (not used)
• 87a
• A10
• Auxiliary hvac control switch (front)
• Auxiliary hvac control switch (rear)
• Engine wiring harness junction block
• Fuse block
• G999 (right "d" pillar)
• High
• Hot at all times
• Hot in run
• I/p wiring harness junction block
• Ign 3 fuse 10a
• Interior lights system
• Low
• Med
• Nca
• Off
• Rear
• Rear auxiliary blower motor resistor/ relay assembly
• Rear blower motor
• Rear blower motor resistor
• Rear high blower relay
• Rear low blower relay
• Rear med blower relay
• Red
• Rr hvac fuse 30a
• Slice pack sp410a

Manual A/C Wiring Diagram, New Style Rear with Heat & A/C for Chevrolet Tahoe 2000

List of elements for Manual A/C Wiring Diagram, New Style Rear with Heat & A/C for Chevrolet Tahoe 2000:

• 87a
• A10
• Auxiliary hvac control switch (front)
• Auxiliary hvac control switch (rear)
• Auxiliary hvac logic module
• Cntrl logic
• Engine wiring harness junction block
• Fuse block
• G999 (right "d" pillar)
• Grd
• High
• Hot at all times
• Hot in run
• I/p wiring harness junction block
• Ign
• Ign 3 fuse 10a
• Interior lights system
• Low
• Med
• Mode
• Mode 1
• Mode 2
• Mode motor
• Nca
• Off
• Pwr
• Rear
• Rear auxiliary blower motor resistor/ relay assembly
• Rear blower motor
• Rear blower motor resistor
• Rear high blower relay
• Rear hvac cntrl
• Rear low blower relay
• Rear med blower relay
• Rear mode door motor
• Rear temperature door motor
• Red
• Rr hvac fuse 30a
• Slice pack sp410a
• Temp
• Temp 1
• Temp 2
• Temp motor

Manual A/C Wiring Diagram, Old Style for Chevrolet Tahoe 2000

List of elements for Manual A/C Wiring Diagram, Old Style for Chevrolet Tahoe 2000:

• (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)

Manual A/C Wiring Diagram, Old Style Auxiliary (1 of 2) for Chevrolet Tahoe 2000

List of elements for Manual A/C Wiring Diagram, Old Style Auxiliary (1 of 2) for Chevrolet Tahoe 2000:

• (hvac harn, 8 cm from recirc door breakout) s244
• (i/p harn, 24 cm from i/p cluster breakout)
• A/c compressor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay (in underhood fuse box)
• A/c compressor cycling switch (on top of accumulator)
• A/c compressor high pressure cutout switch (rear of the a/c compressor)
• A/c compressor low pressure cutout switch (on top of a/c compressor)
• A/c disable
• A/c fuse 10a
• A/c request
• Air temp dr sensor
• Aux fan fuse 30a
• Auxiliary cooling fan motor
• Auxiliary cooling fan relay (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
• C 1995 vftc
• Defogger element
• Front mode door motor (on front a/c-heater housing)
• Front temperature door motor (on front a/c-heater housing)
• G104 (right rear of engine)
• G105 (right front of engine block)
• G112 (right front of engine compt)
• G200 (behind left side of dash)
• G202 (right side of dash)
• 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
• I/p fuse block
• Ign e fuse 10a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Pnk
• Rear defogger system
• Recirc ctrl
• Recirculation door motor (on front a/c-heater housing)
• Red
• Relay control
• S103 (engine harn, near starter solenoid breakout)
• S110 (engine harness, near ebcm breakout)
• S185 (in harness near diode)
• S186 (in harness near diode)
• S243 (hvac harn, 4 cm from recirc door breakout)
• S268 (i/p harness, behind center of dash)
• S298
• Switch signal
• Tan
• Underhood fuse block
• Vehicle control module (engine compartment near ebcm)

Manual A/C Wiring Diagram, Old Style Auxiliary (2 of 2) for Chevrolet Tahoe 2000

List of elements for Manual A/C Wiring Diagram, Old Style Auxiliary (2 of 2) for Chevrolet Tahoe 2000:

• (in front of overhead console) auxiliary a/c & heater control module (front)
• (on auxiliary a/c-heater blower housing)
• (taillamp ext harn, near g404 breakout)
• A red
• Auxiliary a/c & heater control module (rear) (behind left side of dash)
• Auxiliary a/c & heater logic module (behind left side of dash)
• Auxiliary blower motor (behind right rear wheelwell)
• Auxiliary blower motor relay (high)
• Auxiliary blower motor relay (low) (on auxiliary a/c-heater blower housing)
• Auxiliary blower motor relay (medium)
• Auxiliary blower resistor (on top of auxiliary hvac plenum)
• Convenience center
• G400 (on right side "b" pillar)
• Ground
• High
• Hot in run
• I/p fuse block
• Low
• Med
• Mode
• Mode door motor (rear) (on rear a/c housing)
• Off
• Rear
• Red
• Red e
• Rr hvac\ fuse 5 10a
• S305 (auxiliary hvac harn, near rear auxiliary hvac control module)
• S306 (auxiliary hvac harn, near rear auxiliary hvac control module)
• S324
• S400 (auxiliary hvac harn, near auxiliary blower motor relays)
• S401 red (auxiliary hvac harn, near auxiliary blower motor relays)
• Signal
• Temp
• Temp door motor (rear) (on rear a/c housing)