AIR CONDITIONING – Chevrolet Chevy Express G2500 2001 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

4.3L

4.3L VIN W, Compressor Wiring Diagram for Chevrolet Chevy Express G2500 2001

List of elements for 4.3L VIN W, Compressor Wiring Diagram for Chevrolet Chevy Express G2500 2001:

• (in engine harness)
• A/c
• A/c compressor clutch coil
• A/c compressor clutch relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• A/c low pressure switch (in refrigerant line)
• Bi-lev
• Blnd
• Def
• Diode (in underhood fuse block)
• G119 (right side of engine)
• Harness)
• Heat
• Heater & a/c controller
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Max
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• S215 (dash harn, 4 cm from radio breakout)
• Underhood fuse block (left side of engine compt)
• Vent

4.3L VIN W, Heater Wiring Diagram for Chevrolet Chevy Express G2500 2001

List of elements for 4.3L VIN W, Heater Wiring Diagram for Chevrolet Chevy Express G2500 2001:

• (dash harn, 4 cm from hvac switch)
• (gas) g119 (dsl) g110 (gas: right side of engine) (dsl: left front of engine)
• (if equipped) (left rear of cabin, behind rear wheelwell)
• (left body harn, near chmsl) s400
• (rear a/c harn, 13 cm from blower motor relay breakout)
• (rear a/c harn, 7 cm from blower motor resistor breakout)
• (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Air temperature actuator (under dash right side of hvac plenum)
• Auxiliary blower motor
• Auxiliary blower motor high speed relay
• Auxiliary blower motor low speed relay
• Auxiliary blower motor medium speed relay
• Auxiliary blower motor resistor
• Auxiliary blower motor switch (if equipped)
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C2 f
• C202
• Convenience center
• Def
• G200 (behind left kick panel)
• G402 (left rear of vehicle)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Interior lights system
• Med
• Off
• Red
• Rr blower fuse 30a
• Rr hvac fuse 24 10a
• S103 (gas) s101 (dsl) (in engine harness)
• S202 (dash harn, in i/p relay center)
• S215
• S405
• S412
• S413
• Tan
• Underhood fuse block (left side of engine compt)
• Vent

4.3L VIN W, Manual A/C Wiring Diagram, Cargo Van for Chevrolet Chevy Express G2500 2001

List of elements for 4.3L VIN W, Manual A/C Wiring Diagram, Cargo Van for Chevrolet Chevy Express G2500 2001:

• (if equipped) (left rear of cabin, behind rear wheelwell)
• (in refrigerant line) a/c low pressure switch
• (left body harn, 22 cm from front dome lamp breakout)
• (left body harn, near chmsl breakout) s400
• (left rear of cabin, behind rear wheelwell)
• (rear a/c harn, 7 cm from blower mtr resistor breakout) s405
• (under dash right
• A/c
• A/c compressor clutch coil
• A/c compressor clutch relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• Auxiliary blower motor
• Auxiliary blower motor low speed relay (if equipped)
• Auxiliary blower motor resistor
• Bi-lev
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C1 c
• C202
• C3 d3
• Convenience center
• D3 c3
• Def
• Diode (in underhood fuse block)
• Front auxiliary hvac control assembly (if equipped)
• G119 (right side of engine)
• G200 (behind left kick panel)
• G402 (left rear of vehicle)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Interior lights system
• Max
• Med
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• Rear auxiliary mode actuator (left rear interior)
• Rear auxiliary temperature actuator (left rear interior)
• Red
• Rr blower fuse 30a
• Rr hvac fuse 24 10a
• S103 (in engine harness)
• S152 (in engine harness)
• S202
• S202 (dash harn, in i/p relay center)
• S404
• S411 (rear a/c harn, 5 cm from o/s air valve actuator breakout)
• S412 (rear a/c harn, 13 cm from blower motor relay breakout)
• S413 (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Side of hvac plenum) air temperature actuator
• Tan
• Temp
• Underhood fuse block (left side of engine compt)
• Vent
• Vent mode

4.3L VIN W, Manual A/C Wiring Diagram, Passenger Van for Chevrolet Chevy Express G2500 2001

List of elements for 4.3L VIN W, Manual A/C Wiring Diagram, Passenger Van for Chevrolet Chevy Express G2500 2001:

• (aux hvac harn, 13 cm from front hvac module breakout)
• (aux hvac harn, 13 cm from rear hvac module breakout)
• (aux hvac harn, 37 cm from front hvac module breakout)
• (aux hvac harn, 56 cm from front hvac module breakout)
• (dash harn, 4 cm from hvac switch) s215
• (in engine harness)
• (in refrigerant line) a/c low pressure switch
• (left body harn, 22 cm from front dome lamp breakout)
• (left rear of cabin, behind rear wheelwell)
• (left rear of vehicle) g402
• (rear a/c harn, 13 cm from blower motor relay breakout)
• (rear a/c harn, 5 cm from o/s air valve actuator breakout)
• (rear a/c harn, 7 cm from rear blower resistor breakout)
• (rear aux hvac harn, 29 cm from rear aux hvac module breakout)
• (under dash right
• A/c
• A/c compressor clutch coil
• A/c compressor enable relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• Auxiliary blower motor
• Auxiliary blower motor high speed relay
• Auxiliary blower motor low speed relay
• Auxiliary blower motor medium speed relay
• Auxiliary blower motor resistor (left rear of cabin, behind rear wheelwell)
• Auxiliary hvac control assembly (front interior roof panel)
• Bi-lev
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C1 c
• C202
• Convenience center
• Def
• Diode (in underhood fuse block)
• Front auxiliary hvac control module
• G119 (right side of engine)
• G200 (behind left kick panel)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Interior lights system
• Max
• Med
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• Rear auxiliary hvac control module
• Rear auxiliary mode actuator (left rear interior)
• Rear auxiliary temperature actuator (left rear interior)
• Red
• Rr blower fuse 30a
• Rr ctrl
• Rr hvac fuse 24 10a
• S103 (in engine harness)
• S152 (in engine harness)
• S202
• S202 (dash harn, in i/p relay center)
• S307
• S318
• S319
• S320
• S321
• S404
• S405 (rear a/c harn, 7 cm from blower resistor breakout)
• S412
• S413
• Side of hvac plenum) air temperature actuator
• Tan
• Temp
• Under- hood fuse block
• Underhood fuse block (left side of engine compt)
• Vent
• Vent mode

5.0L

5.0L VIN M, Compressor Wiring Diagram for Chevrolet Chevy Express G2500 2001

List of elements for 5.0L VIN M, Compressor Wiring Diagram for Chevrolet Chevy Express G2500 2001:

• (in engine harness)
• A/c
• A/c compressor clutch coil
• A/c compressor clutch relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• A/c low pressure switch (in refrigerant line)
• Bi-lev
• Blnd
• Def
• Diode (in underhood fuse block)
• G119 (right side of engine)
• Harness)
• Heat
• Heater & a/c controller
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Max
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• S215 (dash harn, 4 cm from radio breakout)
• Underhood fuse block (left side of engine compt)
• Vent

5.0L VIN M, Heater Wiring Diagram for Chevrolet Chevy Express G2500 2001

List of elements for 5.0L VIN M, Heater Wiring Diagram for Chevrolet Chevy Express G2500 2001:

• (dash harn, 4 cm from hvac switch)
• (gas) g119 (dsl) g110 (gas: right side of engine) (dsl: left front of engine)
• (if equipped) (left rear of cabin, behind rear wheelwell)
• (left body harn, near chmsl) s400
• (rear a/c harn, 13 cm from blower motor relay breakout)
• (rear a/c harn, 7 cm from blower motor resistor breakout)
• (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Air temperature actuator (under dash right side of hvac plenum)
• Auxiliary blower motor
• Auxiliary blower motor high speed relay
• Auxiliary blower motor low speed relay
• Auxiliary blower motor medium speed relay
• Auxiliary blower motor resistor
• Auxiliary blower motor switch (if equipped)
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C2 f
• C202
• Convenience center
• Def
• G200 (behind left kick panel)
• G402 (left rear of vehicle)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Interior lights system
• Med
• Off
• Red
• Rr blower fuse 30a
• Rr hvac fuse 24 10a
• S103 (gas) s101 (dsl) (in engine harness)
• S202 (dash harn, in i/p relay center)
• S215
• S405
• S412
• S413
• Tan
• Underhood fuse block (left side of engine compt)
• Vent

5.0L VIN M, Manual A/C Wiring Diagram, Cargo Van for Chevrolet Chevy Express G2500 2001

List of elements for 5.0L VIN M, Manual A/C Wiring Diagram, Cargo Van for Chevrolet Chevy Express G2500 2001:

• (if equipped) (left rear of cabin, behind rear wheelwell)
• (in refrigerant line) a/c low pressure switch
• (left body harn, 22 cm from front dome lamp breakout)
• (left body harn, near chmsl breakout) s400
• (left rear of cabin, behind rear wheelwell)
• (rear a/c harn, 7 cm from blower mtr resistor breakout) s405
• (under dash right
• A/c
• A/c compressor clutch coil
• A/c compressor clutch relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• Auxiliary blower motor
• Auxiliary blower motor low speed relay (if equipped)
• Auxiliary blower motor resistor
• Bi-lev
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C1 c
• C202
• C3 d3
• Convenience center
• D3 c3
• Def
• Diode (in underhood fuse block)
• Front auxiliary hvac control assembly (if equipped)
• G119 (right side of engine)
• G200 (behind left kick panel)
• G402 (left rear of vehicle)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Interior lights system
• Max
• Med
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• Rear auxiliary mode actuator (left rear interior)
• Rear auxiliary temperature actuator (left rear interior)
• Red
• Rr blower fuse 30a
• Rr hvac fuse 24 10a
• S103 (in engine harness)
• S152 (in engine harness)
• S202
• S202 (dash harn, in i/p relay center)
• S404
• S411 (rear a/c harn, 5 cm from o/s air valve actuator breakout)
• S412 (rear a/c harn, 13 cm from blower motor relay breakout)
• S413 (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Side of hvac plenum) air temperature actuator
• Tan
• Temp
• Underhood fuse block (left side of engine compt)
• Vent
• Vent mode

5.0L VIN M, Manual A/C Wiring Diagram, Passenger Van for Chevrolet Chevy Express G2500 2001

List of elements for 5.0L VIN M, Manual A/C Wiring Diagram, Passenger Van for Chevrolet Chevy Express G2500 2001:

• (aux hvac harn, 13 cm from front hvac module breakout)
• (aux hvac harn, 13 cm from rear hvac module breakout)
• (aux hvac harn, 37 cm from front hvac module breakout)
• (aux hvac harn, 56 cm from front hvac module breakout)
• (dash harn, 4 cm from hvac switch) s215
• (in engine harness)
• (in refrigerant line) a/c low pressure switch
• (left body harn, 22 cm from front dome lamp breakout)
• (left rear of cabin, behind rear wheelwell)
• (left rear of vehicle) g402
• (rear a/c harn, 13 cm from blower motor relay breakout)
• (rear a/c harn, 5 cm from o/s air valve actuator breakout)
• (rear a/c harn, 7 cm from rear blower resistor breakout)
• (rear aux hvac harn, 29 cm from rear aux hvac module breakout)
• (under dash right
• A/c
• A/c compressor clutch coil
• A/c compressor enable relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• Auxiliary blower motor
• Auxiliary blower motor high speed relay
• Auxiliary blower motor low speed relay
• Auxiliary blower motor medium speed relay
• Auxiliary blower motor resistor (left rear of cabin, behind rear wheelwell)
• Auxiliary hvac control assembly (front interior roof panel)
• Bi-lev
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C1 c
• C202
• Convenience center
• Def
• Diode (in underhood fuse block)
• Front auxiliary hvac control module
• G119 (right side of engine)
• G200 (behind left kick panel)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Interior lights system
• Max
• Med
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• Rear auxiliary hvac control module
• Rear auxiliary mode actuator (left rear interior)
• Rear auxiliary temperature actuator (left rear interior)
• Red
• Rr blower fuse 30a
• Rr ctrl
• Rr hvac fuse 24 10a
• S103 (in engine harness)
• S152 (in engine harness)
• S202
• S202 (dash harn, in i/p relay center)
• S307
• S318
• S319
• S320
• S321
• S404
• S405 (rear a/c harn, 7 cm from blower resistor breakout)
• S412
• S413
• Side of hvac plenum) air temperature actuator
• Tan
• Temp
• Under- hood fuse block
• Underhood fuse block (left side of engine compt)
• Vent
• Vent mode

5.7L

5.7L VIN R, Compressor Wiring Diagram for Chevrolet Chevy Express G2500 2001

List of elements for 5.7L VIN R, Compressor Wiring Diagram for Chevrolet Chevy Express G2500 2001:

• (in engine harness)
• A/c
• A/c compressor clutch coil
• A/c compressor clutch relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• A/c low pressure switch (in refrigerant line)
• Bi-lev
• Blnd
• Def
• Diode (in underhood fuse block)
• G119 (right side of engine)
• Harness)
• Heat
• Heater & a/c controller
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Max
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• S215 (dash harn, 4 cm from radio breakout)
• Underhood fuse block (left side of engine compt)
• Vent

5.7L VIN R, Heater Wiring Diagram for Chevrolet Chevy Express G2500 2001

List of elements for 5.7L VIN R, Heater Wiring Diagram for Chevrolet Chevy Express G2500 2001:

• (dash harn, 4 cm from hvac switch)
• (gas) g119 (dsl) g110 (gas: right side of engine) (dsl: left front of engine)
• (if equipped) (left rear of cabin, behind rear wheelwell)
• (left body harn, near chmsl) s400
• (rear a/c harn, 13 cm from blower motor relay breakout)
• (rear a/c harn, 7 cm from blower motor resistor breakout)
• (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Air temperature actuator (under dash right side of hvac plenum)
• Auxiliary blower motor
• Auxiliary blower motor high speed relay
• Auxiliary blower motor low speed relay
• Auxiliary blower motor medium speed relay
• Auxiliary blower motor resistor
• Auxiliary blower motor switch (if equipped)
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C2 f
• C202
• Convenience center
• Def
• G200 (behind left kick panel)
• G402 (left rear of vehicle)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Interior lights system
• Med
• Off
• Red
• Rr blower fuse 30a
• Rr hvac fuse 24 10a
• S103 (gas) s101 (dsl) (in engine harness)
• S202 (dash harn, in i/p relay center)
• S215
• S405
• S412
• S413
• Tan
• Underhood fuse block (left side of engine compt)
• Vent

5.7L VIN R, Manual A/C Wiring Diagram, Cargo Van for Chevrolet Chevy Express G2500 2001

List of elements for 5.7L VIN R, Manual A/C Wiring Diagram, Cargo Van for Chevrolet Chevy Express G2500 2001:

• (if equipped) (left rear of cabin, behind rear wheelwell)
• (in refrigerant line) a/c low pressure switch
• (left body harn, 22 cm from front dome lamp breakout)
• (left body harn, near chmsl breakout) s400
• (left rear of cabin, behind rear wheelwell)
• (rear a/c harn, 7 cm from blower mtr resistor breakout) s405
• (under dash right
• A/c
• A/c compressor clutch coil
• A/c compressor clutch relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• Auxiliary blower motor
• Auxiliary blower motor low speed relay (if equipped)
• Auxiliary blower motor resistor
• Bi-lev
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C1 c
• C202
• C3 d3
• Convenience center
• D3 c3
• Def
• Diode (in underhood fuse block)
• Front auxiliary hvac control assembly (if equipped)
• G119 (right side of engine)
• G200 (behind left kick panel)
• G402 (left rear of vehicle)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Interior lights system
• Max
• Med
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• Rear auxiliary mode actuator (left rear interior)
• Rear auxiliary temperature actuator (left rear interior)
• Red
• Rr blower fuse 30a
• Rr hvac fuse 24 10a
• S103 (in engine harness)
• S152 (in engine harness)
• S202
• S202 (dash harn, in i/p relay center)
• S404
• S411 (rear a/c harn, 5 cm from o/s air valve actuator breakout)
• S412 (rear a/c harn, 13 cm from blower motor relay breakout)
• S413 (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Side of hvac plenum) air temperature actuator
• Tan
• Temp
• Underhood fuse block (left side of engine compt)
• Vent
• Vent mode

5.7L VIN R, Manual A/C Wiring Diagram, Passenger Van for Chevrolet Chevy Express G2500 2001

List of elements for 5.7L VIN R, Manual A/C Wiring Diagram, Passenger Van for Chevrolet Chevy Express G2500 2001:

• (aux hvac harn, 13 cm from front hvac module breakout)
• (aux hvac harn, 13 cm from rear hvac module breakout)
• (aux hvac harn, 37 cm from front hvac module breakout)
• (aux hvac harn, 56 cm from front hvac module breakout)
• (dash harn, 4 cm from hvac switch) s215
• (in engine harness)
• (in refrigerant line) a/c low pressure switch
• (left body harn, 22 cm from front dome lamp breakout)
• (left rear of cabin, behind rear wheelwell)
• (left rear of vehicle) g402
• (rear a/c harn, 13 cm from blower motor relay breakout)
• (rear a/c harn, 5 cm from o/s air valve actuator breakout)
• (rear a/c harn, 7 cm from rear blower resistor breakout)
• (rear aux hvac harn, 29 cm from rear aux hvac module breakout)
• (under dash right
• A/c
• A/c compressor clutch coil
• A/c compressor enable relay (in underhood fuse block)
• A/c fuse 10a
• A/c high pressure switch (rear of a/c compressor)
• Auxiliary blower motor
• Auxiliary blower motor high speed relay
• Auxiliary blower motor low speed relay
• Auxiliary blower motor medium speed relay
• Auxiliary blower motor resistor (left rear of cabin, behind rear wheelwell)
• Auxiliary hvac control assembly (front interior roof panel)
• Bi-lev
• Blend
• Blower fuse 60a
• Blower motor (right rear of engine compt, on firewall)
• Blower motor resistor assembly (right rear of engine compt, in blower motor housing)
• C1 c
• C202
• Convenience center
• Def
• Diode (in underhood fuse block)
• Front auxiliary hvac control module
• G119 (right side of engine)
• G200 (behind left kick panel)
• Heat
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control assembly
• I/p fuse block (lower left kick panel)
• Ign e fuse 10a
• Interior lights system
• Max
• Med
• Off
• Pnk
• Powertrain control module (on left front inner fender)
• Rear auxiliary hvac control module
• Rear auxiliary mode actuator (left rear interior)
• Rear auxiliary temperature actuator (left rear interior)
• Red
• Rr blower fuse 30a
• Rr ctrl
• Rr hvac fuse 24 10a
• S103 (in engine harness)
• S152 (in engine harness)
• S202
• S202 (dash harn, in i/p relay center)
• S307
• S318
• S319
• S320
• S321
• S404
• S405 (rear a/c harn, 7 cm from blower resistor breakout)
• S412
• S413
• Side of hvac plenum) air temperature actuator
• Tan
• Temp
• Under- hood fuse block
• Underhood fuse block (left side of engine compt)
• Vent
• Vent mode