AIR CONDITIONING – Chevrolet Pickup K2500 1997 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

4.3L

4.3L (VIN W), A/C Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for 4.3L (VIN W), A/C Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harn, near egr breakout)
• (engine harness, in fuse-relay center breakout)
• (engine harness, near fuse-relay center)
• (engine harness, near underhood lamp breakout)
• (exc 4.3 l)
• (fwd lamps harn, 5cm from right headlamp breakout)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 28 cm from cluster breakout)
• (i/p harness, in hvac connector breakout)
• (rear hvac control harness, 5 cm from hvac logic module breakout)
• (right side of engine)
• A/c comp mini fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay (in underhood fuse/relay center)
• A/c compressor cycling switch (on top right of a/c accumulator)
• A/c ctrl
• A/c disable
• A/c high pressure cutout switch (on bottom rear of a/c compressor)
• A/c low pressure cutout switch (on top rear of a/c compressor)
• A/c maxi fuse 3 50a
• A/c req
• A/c switch
• Air temp dr sensor
• Aux fan ctrl
• Aux fan mini fuse 30a
• Auxiliary cooling fan motor
• Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center)
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• Center
• Defogger element
• Diode
• Fan req
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G101 (right front of engine compartment)
• G119 (right front of engine)
• G120
• G120 (right side of engine)
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Hot in run or start
• Htr a/c fuse 12 25a
• Ign mini fuse 10a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Pnk
• Rear defogger system
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• Relay ctrl
• S110
• S128
• S146
• S147
• S147 (engine harn, near egr breakout)
• S180
• S185
• S186
• S244
• S268
• S298
• S308
• Tan
• Underhood fuse-relay
• Underhood fuse-relay center
• Valve ctrl
• Vehicle control module (left rear of engine compt)
• Water valve (suburban, utility, crew cab only) (right center of intake area)

Heater Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for Heater Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harness)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 24 cm from i/p cluster breakout)
• (right side of engine)
• A/c maxi fuse 3 50a
• Air temp dr sensor
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• C10
• Defogger element
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G120
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Htr a/c fuse 12 25a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Rear defogger system
• Recirc ctrl
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• S110 (engine harness, near fuse-relay center)
• S147
• S243 (hvac harness, 4 cm from recirc door breakout)
• S244
• S268 (i/p harness, 6.5 cm from hvac connector breakout)
• S298
• Tan
• Underhood fuse-relay center

5.0L

5.0L (VIN M), A/C Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for 5.0L (VIN M), A/C Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harn, near egr breakout)
• (engine harness, in fuse-relay center breakout)
• (engine harness, near fuse-relay center)
• (engine harness, near underhood lamp breakout)
• (exc 4.3 l)
• (fwd lamps harn, 5cm from right headlamp breakout)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 28 cm from cluster breakout)
• (i/p harness, in hvac connector breakout)
• (rear hvac control harness, 5 cm from hvac logic module breakout)
• (right side of engine)
• A/c comp mini fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay (in underhood fuse/relay center)
• A/c compressor cycling switch (on top right of a/c accumulator)
• A/c ctrl
• A/c disable
• A/c high pressure cutout switch (on bottom rear of a/c compressor)
• A/c low pressure cutout switch (on top rear of a/c compressor)
• A/c maxi fuse 3 50a
• A/c req
• A/c switch
• Air temp dr sensor
• Aux fan ctrl
• Aux fan mini fuse 30a
• Auxiliary cooling fan motor
• Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center)
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• Center
• Defogger element
• Diode
• Fan req
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G101 (right front of engine compartment)
• G119 (right front of engine)
• G120
• G120 (right side of engine)
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Hot in run or start
• Htr a/c fuse 12 25a
• Ign mini fuse 10a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Pnk
• Rear defogger system
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• Relay ctrl
• S110
• S128
• S146
• S147
• S147 (engine harn, near egr breakout)
• S180
• S185
• S186
• S244
• S268
• S298
• S308
• Tan
• Underhood fuse-relay
• Underhood fuse-relay center
• Valve ctrl
• Vehicle control module (left rear of engine compt)
• Water valve (suburban, utility, crew cab only) (right center of intake area)

Heater Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for Heater Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harness)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 24 cm from i/p cluster breakout)
• (right side of engine)
• A/c maxi fuse 3 50a
• Air temp dr sensor
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• C10
• Defogger element
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G120
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Htr a/c fuse 12 25a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Rear defogger system
• Recirc ctrl
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• S110 (engine harness, near fuse-relay center)
• S147
• S243 (hvac harness, 4 cm from recirc door breakout)
• S244
• S268 (i/p harness, 6.5 cm from hvac connector breakout)
• S298
• Tan
• Underhood fuse-relay center

5.7L

5.7L (VIN R), A/C Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for 5.7L (VIN R), A/C Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harn, near egr breakout)
• (engine harness, in fuse-relay center breakout)
• (engine harness, near fuse-relay center)
• (engine harness, near underhood lamp breakout)
• (exc 4.3 l)
• (fwd lamps harn, 5cm from right headlamp breakout)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 28 cm from cluster breakout)
• (i/p harness, in hvac connector breakout)
• (rear hvac control harness, 5 cm from hvac logic module breakout)
• (right side of engine)
• A/c comp mini fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay (in underhood fuse/relay center)
• A/c compressor cycling switch (on top right of a/c accumulator)
• A/c ctrl
• A/c disable
• A/c high pressure cutout switch (on bottom rear of a/c compressor)
• A/c low pressure cutout switch (on top rear of a/c compressor)
• A/c maxi fuse 3 50a
• A/c req
• A/c switch
• Air temp dr sensor
• Aux fan ctrl
• Aux fan mini fuse 30a
• Auxiliary cooling fan motor
• Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center)
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• Center
• Defogger element
• Diode
• Fan req
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G101 (right front of engine compartment)
• G119 (right front of engine)
• G120
• G120 (right side of engine)
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Hot in run or start
• Htr a/c fuse 12 25a
• Ign mini fuse 10a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Pnk
• Rear defogger system
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• Relay ctrl
• S110
• S128
• S146
• S147
• S147 (engine harn, near egr breakout)
• S180
• S185
• S186
• S244
• S268
• S298
• S308
• Tan
• Underhood fuse-relay
• Underhood fuse-relay center
• Valve ctrl
• Vehicle control module (left rear of engine compt)
• Water valve (suburban, utility, crew cab only) (right center of intake area)

Heater Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for Heater Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harness)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 24 cm from i/p cluster breakout)
• (right side of engine)
• A/c maxi fuse 3 50a
• Air temp dr sensor
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• C10
• Defogger element
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G120
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Htr a/c fuse 12 25a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Rear defogger system
• Recirc ctrl
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• S110 (engine harness, near fuse-relay center)
• S147
• S243 (hvac harness, 4 cm from recirc door breakout)
• S244
• S268 (i/p harness, 6.5 cm from hvac connector breakout)
• S298
• Tan
• Underhood fuse-relay center

6.5L

6.5L (VIN S), A/C Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for 6.5L (VIN S), A/C Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harn, 30cm from breakout to ebcm)
• (engine harn, near egr breakout)
• (engine harness, in fuse-relay center breakout)
• (engine harness, near fuse-relay center)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 28 cm from cluster breakout)
• (i/p harn, 8 cm from radio harness breakout)
• (i/p harness, in hvac connector breakout)
• (rear hvac control harness, 5 cm from hvac logic module breakout)
• (right side of engine)
• A/c comp mini 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 near compressor)
• A/c ctrl
• A/c disable
• A/c high pressure cutout switch (on a/c compressor)
• A/c low pressure cutout switch (on low pressure line)
• A/c maxi fuse 3 50a
• A/c req
• A/c switch
• Air temp dr sensor
• Aux fan ctrl
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• Center
• Defogger element
• Diode
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G120
• G120 (right side of engine)
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Hot in run or start
• Htr a/c fuse 12 25a
• Ign mini fuse 10a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Pnk
• Powertrain control module (left rear of engine compt)
• Rear defogger system
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• S107
• S110
• S146
• S147
• S147 (engine harn, near egr breakout)
• S185
• S186
• S212
• S244
• S268
• S298
• S308
• Tan
• Underhood fuse-relay
• Valve ctrl
• Water valve (suburban, utility, crew cab only) (right center of intake area)

Heater Wiring Diagram for Chevrolet Pickup K2500 1997

List of elements for Heater Wiring Diagram for Chevrolet Pickup K2500 1997:

• (engine harness)
• (hvac harness, 15cm from recirc door breakout)
• (i/p harn, 24 cm from i/p cluster breakout)
• (right side of engine)
• A/c maxi fuse 3 50a
• Air temp dr sensor
• Battery
• Blower motor
• Blower resistor (under right side of i/p, on heater housing)
• Blower switch
• C10
• Defogger element
• Front mode door motor (under i/p on heater- a/c case)
• Front temperature door motor (under i/p on heater- a/c case)
• Fuse block
• G120
• G202 (behind left side of i/p)
• Ground
• Heater and a/c control module
• High blower relay (under i/p on top of heater-a/c case)
• Hot at all times
• Hot in run
• Htr a/c fuse 12 25a
• Ignition
• Illumination
• Interior lights system
• Mode signal
• Off
• Rear defogger system
• Recirc ctrl
• Recirculation door motor (under i/p on heater- a/c case)
• Red
• S110 (engine harness, near fuse-relay center)
• S147
• S243 (hvac harness, 4 cm from recirc door breakout)
• S244
• S268 (i/p harness, 6.5 cm from hvac connector breakout)
• S298
• Tan
• Underhood fuse-relay center