AIR CONDITIONING – GMC Sierra 2500 2000 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Compressor Wiring Diagram for GMC Sierra 2500 2000

List of elements for Compressor Wiring Diagram for GMC Sierra 2500 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)

Heater Wiring Diagram for GMC Sierra 2500 2000

List of elements for Heater Wiring Diagram for GMC Sierra 2500 2000:

• Blower motor
• Blower motor relay
• Blower motor resistor assembly (on hvac module, near blower motor)
• Blower motor switch
• D12
• Frt hvac fuse 30a
• Fuse block (lower left side of dash)
• G203 (right side of dash, at "a" pillar)
• Hot at all times
• Hot in run
• Htr-a/c fuse 25a
• Interior lights system
• Off
• Tan
• Underhood junction block (left side of engine compt, near battery)

Manual A/C Wiring Diagram, Base for GMC Sierra 2500 2000

List of elements for Manual A/C Wiring Diagram, Base for GMC Sierra 2500 2000:

• 4.3l
• A a/c disable
• A/c comp relay ctrl
• 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 switch (right side of accumulator)
• 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/relay assembly (on hvac module, near blower motor)
• Blower relay
• Body junctioin block
• C ground
• 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)
• G200 (on upper left dash at "a" pillar)
• G200 (right side of dash, at "a" pillar)
• H 5v reference
• High
• 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)
• Ign e fuse 10a
• Interior lights system
• J rear defog
• K ign power
• L a/c request
• Low
• M feedback
• Mode actuator (left side of hvac module)
• Off
• Powertrain control module (pcm) (left front of engine of engine compt)
• Press sw a/c high
• Recirculation actuator (top of hvac module)
• Red
• S101 (forward lamp harness)
• S102 (engine harn)
• Sp203
• Tan
• Underhood junctioin block (left side of engine compt, near battery)

Manual A/C Wiring Diagram, Up Level for GMC Sierra 2500 2000

List of elements for Manual A/C Wiring Diagram, Up Level for GMC Sierra 2500 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)