Wiring Diagram Cluster

1987 Pontiac Grand Prix A/C & Heater Wiring Diagram

Find A/C compressor clutch wiring, blower motor circuits, temperature control module paths, and refrigerant pressure switch schematics.

Matched Diagrams

48

Variant Used

Grand Prix V6-231 3.8L

Total Vehicle Diagrams

389

From Diagram To Fix

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Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.

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Vehicle Repair Hub

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OEM source

Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

1987 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC ) β†’

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More System Pages for This Vehicle

Move laterally into the neighboring systems that usually share the same electrical neighborhood.

Starter Wiring Diagram β†’

Top A/C & Heater Diagram Paths

1.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > (Part 1 of 2)GeneralOpen2.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > (Part 2 of 2)GeneralOpen3.Compressor HVAC β€” Diagnostic AidsHeating and Air ConditioningOpen4.Compressor HVAC β€” Diagram Information and InstructionsHeating and Air ConditioningOpen5.Compressor HVAC β€” Electrical Diagrams > (Part 1 of 2)Heating and Air ConditioningOpen6.Compressor HVAC β€” Electrical Diagrams > (Part 2 of 2)Heating and Air ConditioningOpen7.Compressor HVAC β€” Exploded ViewsHeating and Air ConditioningOpen8.Components > Motors > A/C Defrost Vacuum MotorGeneralOpen9.Components > Motors > Heater-A/C Mode Vacuum MotorGeneralOpen10.Exploded Views > Compressor HVACGeneralOpen11.Components > Miscellaneous Components > Blower Resistors > Less A/CGeneralOpen12.Components > Miscellaneous Components > Blower Resistors > With A/CGeneralOpen13.Components > Motors > Blower Motor > With A/CGeneralOpen14.Components > Motors > Blower Motor > Without A/CGeneralOpen15.Components > Motors > Heater Water Valve Vacuum MotorGeneralOpen16.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > WDO Circuit Breaker, C/H Fuse & Heater-A/C FuseGeneralOpen17.Vacuum and Vapor Hose Diagrams > Heating and Air ConditioningGeneralOpen18.Radio, Stereo, and Compact Disc β€” Diagnostic AidsAccessories and Optional EquipmentOpen19.Radio, Stereo, and Compact Disc β€” Diagram Information and InstructionsAccessories and Optional EquipmentOpen20.Radio, Stereo, and Compact Disc β€” Electrical Diagrams > MonoAccessories and Optional EquipmentOpen21.Radio, Stereo, and Compact Disc β€” Electrical Diagrams > StereoAccessories and Optional EquipmentOpen22.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen23.Backup Lamp β€” Diagnostic AidsLighting and HornsOpen24.Backup Lamp β€” Diagram Information and InstructionsLighting and HornsOpen25.Backup Lamp β€” Electrical DiagramsLighting and HornsOpen26.Components > Miscellaneous Components > Choke HeaterGeneralOpen27.Components > Miscellaneous Components > Electronic Vacuum Regulator ValveGeneralOpen28.Components > Miscellaneous Components > Tachometer FilterGeneralOpen29.Components > Miscellaneous Components > Vacuum Release ValveGeneralOpen30.Components > Miscellaneous Components > Vacuum Tank > Less Cruise ControlGeneralOpen31.Components > Miscellaneous Components > Vacuum Tank > With Cruise ControlGeneralOpen32.Components > Motors > BI-Directional Lower Mode Vacuum MotorGeneralOpen33.Components > Motors > Idle Air Control (IAC) MotorGeneralOpen34.Components > Motors > Recirculating Outside Air Vacuum MotorGeneralOpen35.Components > Relays > Choke Heater RelayGeneralOpen36.Components > Sensors > Vacuum SensorGeneralOpen37.Components > Solenoids > Air Injection Vacuum Control Solenoid ValveGeneralOpen38.Components > Switches > Back-Up Light SwitchGeneralOpen39.Electrical Diagrams > Choke Heater > With GaugesPowertrain ManagementOpen40.Electrical Diagrams > Choke Heater > Without GaugesPowertrain ManagementOpen41.Electrical Diagrams > Cruise Control > Vacuum ControlsGeneralOpen42.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Part 1 of 2GeneralOpen43.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Part 2 of 2GeneralOpen44.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen45.Electrical Diagrams > Powertrain Management > System Diagram > Choke Heater > With GaugesGeneralOpen46.Electrical Diagrams > Powertrain Management > System Diagram > Choke Heater > Without GaugesGeneralOpen47.Electrical Diagrams > Radio, Stereo, and Compact Disc > MonoGeneralOpen48.Electrical Diagrams > Radio, Stereo, and Compact Disc > StereoGeneralOpen