AIR CONDITIONING – Chevrolet Chevy Express G3500 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Compressor Wiring Diagram for Chevrolet Chevy Express G3500 2003

List of elements for Compressor Wiring Diagram for Chevrolet Chevy Express G3500 2003:

• (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout)
• A/c compressor clutch
• A/c fuse 32 10a
• A/c high pressure switch (rear of a/c compressor)
• A/c low pressure switch (on side of accumulator)
• A/c relay 54
• Bi-lev
• Body fuse block (below left front seat)
• Clutch rly ctrl
• D12
• Def
• F12
• G102 (on left rear of engine)
• Heat
• Heat/def
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac control assembly
• Hvac fuse 10 20a
• Ign e fuse 22 10a
• Low press sig
• Max
• Norm
• Off
• Powertrain control module (pcm) (on left front inner fender)
• Request sig
• Underhood fuse block (on left side of engine compt)
• Vent

Heater Wiring Diagram for Chevrolet Chevy Express G3500 2003

List of elements for Heater Wiring Diagram for Chevrolet Chevy Express G3500 2003:

• (bottom of left "b" pillar) g347
• (left rear of passenger
• (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• (rear hvac harn, 13 cm from auxiliary blower motor connector breakout)
• (rear hvac harn, 20 cm from auxiliary blower motor connector breakout)
• Air temperature actuator (behind right side of dash)
• Auxiliary blower motor (if equipped (left rear of passenger
• Auxiliary blower motor resistor (if equipped) (left rear of passenger
• Auxiliary blower motor switch (if equipped)
• Auxiliary high speed blower motor relay (if equipped) (left rear of passenger
• Auxiliary low speed blower motor relay (if equipped)
• Auxiliary medium speed blower motor relay (if equipped) (left rear of passenger
• Bi-lev
• Blow fuse 51 40a
• Blower motor (right rear of engine compt)
• Blower motor resistor assembly (right rear of engine compt)
• Body fuse block (below left front seat)
• Compt, on auxiliary hvac assembly)
• Def
• F10
• G102 (on left rear of engine)
• G304 (behind right kick panel)
• G401 (top of right "d" pillar)
• Heat
• Heat/def
• Hot at all times
• Hot in run
• Hvac 1 fuse 9 10a
• Hvac control assembly
• Hvac fuse 10a
• Interior lights system
• Med
• Off
• Rr blower fuse 13 30a
• S102 (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout)
• S249 (dash harn, 5 cm from inflatable restraint dash module connector breakout)
• S401 (body harn, 16 cm from chmsl connector breakout)
• S405
• S412
• S413
• Splice pack sp347
• Tan
• Underhood fuse block (left side of engine compt)
• Vent

Manual A/C Wiring Diagram, Cargo Van (1 of 2) for Chevrolet Chevy Express G3500 2003

List of elements for Manual A/C Wiring Diagram, Cargo Van (1 of 2) for Chevrolet Chevy Express G3500 2003:

• (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout)
• (behind right
• (behind right kick panel) g304
• A/c high pressure switch
• Auxiliary air temperature actuator (left rear of passenger compt)
• Auxiliary mode actuator (left rear of passenger compt)
• Battery
• Bi-lev
• Blow fuse 51 40a
• Blower motor (right rear of engine compt)
• Blower motor resistor assembly (right rear of engine compt)
• Body fuse block (below left front seat)
• C2 a
• C2 c
• Def
• Defogger system
• F10
• Front auxiliary hvac control assembly (if equipped)
• G102 (on left rear of engine)
• G347 (bottom of left "b" pillar)
• G401 (top of right "d" pillar)
• Ground
• Heat
• Heat/def
• Hot at all times
• Hot in run
• Hvac 1 fuse 9 10a
• Hvac control assembly
• Hvac fuse 10a
• Ing 3
• Interior lights system
• Logic
• Max
• Med
• Norm
• Off
• R defog ind
• Reading lamp connector breakout)
• Rr blower fuse 13 30a
• S102
• S249 (dash harn, 5 cm from inflatable restraint dash module connector breakout)
• S411 (rear hvac harn, 6 cm from auxiliary blower motor connetcor breakout)
• Side of dash) air temperature actuator
• Tan
• Underhood fuse block (left side of engine compt)
• Vent

Manual A/C Wiring Diagram, Cargo Van (2 of 2) for Chevrolet Chevy Express G3500 2003

List of elements for Manual A/C Wiring Diagram, Cargo Van (2 of 2) for Chevrolet Chevy Express G3500 2003:

• (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout)
• (left rear of passenger
• (on left rear of engine)
• (provisional)
• (rear hvac harn, 13 cm from auxiliary blower motor connector breakout)
• (top of right "d" pillar) g401
• (w/ rv upfitter
• (w/ rv upfitter option:
• (w/ rv upfitter option: body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 41 cm from c304 breakout)
• A/c compressor clutch
• A/c fuse 32 10a
• A/c low pressure switch (on side of accumulator)
• A/c relay 54
• Auxiliary blower motor (if equipped) (left rear of passenger
• Auxiliary blower motor resistor (if equipped) (left rear of passenger
• Auxiliary high speed blower motor relay (if equipped) (left rear of passenger
• Auxiliary low speed blower motor relay (if equipped)
• Auxiliary medium speed blower motor relay (if equipped) (left rear of passenger
• Body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 5 cm from c304 breakout)
• C319
• Clutch rly ctrl c2
• Compt, on auxiliary hvac assembly)
• D12
• F12
• G102
• Hot at all times
• Hot in run or start
• Ign e fuse 22 10a
• Low press sig
• Option: body harn, 32 cm from c308 breakout) (w/o rv upfitter option: body harn, 32 cm from c304 breakout)
• Powertrain control module (pcm) (on left front inner fender)
• Request sig
• S102
• S308
• S310
• S311
• S405
• S411 (rear hvac harn, 6 cm from auxiliary blower motor connetcor breakout)
• S412 (rear hvac harn, 20 cm from auxiliary blower motor connector breakout)
• S413 (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram, Passenger Van (1 of 2) for Chevrolet Chevy Express G3500 2003

List of elements for Manual A/C Wiring Diagram, Passenger Van (1 of 2) for Chevrolet Chevy Express G3500 2003:

• (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout)
• (behind right
• (behind right kick panel) g304
• (rear head- liner harn 30 cm from c420)
• (w/ rv upfitter option:
• (w/ rv upfitter option: in upfitter hvac control harn, 19 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 42 cm from c304 breakout)
• (w/ rv upfitter option: in upfitter hvac control harn, 64 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 11 cm from c304 breakout)
• (w/ rv upfitter option: in upfitter hvac control harn, 88 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 52 cm from c304 breakout)
• A/c high pressure switch
• Auxiliary hvac control processor (behind auxiliary hvac assembly, in headliner)
• Battery
• Bi-lev
• Blow fuse 51 40a
• Blower motor (right rear of engine compt)
• Blower motor resistor assembly (right rear of engine compt)
• Body fuse block (below left front seat)
• Breakout)
• C1 g
• C2 a
• C2 c
• Def
• Defogger system
• Except rv
• F10
• Front auxiliary hvac control assembly
• G102 (on left rear of engine)
• G347 (bottom of left "b" pillar)
• Ground
• Heat
• Heat/def
• Hot at all times
• Hot in run
• Hvac 1 fuse 9 10a
• Hvac control assembly
• Hvac fuse 10a
• In upfitter hvac control harn, 39 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 31 cm from c304 breakout)
• Ing 3
• Interior lights system
• Logic
• Max
• Med
• Norm
• Off
• R defog ind
• Rear
• Rear auxiliary hvac control assembly
• Rr blower fuse 13 30a
• S102
• S249 (dash harn, 5 cm from inflatable restraint dash module connector breakout)
• S305
• S306
• S307
• S314
• S330
• S354
• Side of dash) air temperature actuator
• Tan
• Tan e
• Underhood fuse block (left side of engine compt)
• Vent

Manual A/C Wiring Diagram, Passenger Van (2 of 2) for Chevrolet Chevy Express G3500 2003

List of elements for Manual A/C Wiring Diagram, Passenger Van (2 of 2) for Chevrolet Chevy Express G3500 2003:

• (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout)
• (on left rear of engine)
• (provisional)
• (rear hvac harn, 13 cm from auxiliary blower motor connector breakout) s405
• (w/ rv upfitter
• (w/ rv upfitter option:
• (w/ rv upfitter option: body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 41 cm from c304 breakout)
• A/c compressor clutch
• A/c fuse 32 10a
• A/c low pressure switch (on side of accumulator)
• A/c relay 54
• Auxiliary air temperature actuator (left rear of passenger compt)
• Auxiliary blower motor (left rear of passenger compt, on auxiliary
• Auxiliary blower motor resistor (left rear of passenger
• Auxiliary high speed blower motor relay (left rear of passenger
• Auxiliary low speed blower motor relay (left rear of passenger
• Auxiliary medium speed blower motor relay (left rear of passenger
• Auxiliary mode actuator (left rear of passenger compt)
• Body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 5 cm from c304 breakout)
• C319
• Clutch rly ctrl c2
• Compt, on auxiliary hvac assembly)
• D12
• F12
• G102
• G401 (top of right "d" pillar)
• Hot at all times
• Hot in run or start
• Hvac assembly)
• Ign e fuse 22 10a
• Low press sig
• Option: body harn, 32 cm from c308 breakout) (w/o rv upfitter option: body harn, 32 cm from c304 breakout)
• Powertrain control module (pcm) (on left front inner fender)
• Request sig
• S102
• S308
• S310
• S311
• S411 (rear hvac harn, 6 cm from auxiliary blower motor connetcor breakout)
• S412 (rear hvac harn, 20 cm from auxiliary blower motor connector breakout)
• S413 (rear a/c harn, 7 cm from rear blower motor resistor breakout)
• Underhood fuse block (left side of engine compt)