Workshop Repair and Service Manuals GMC SIERRA
Articles

HVAC

12-02-32-002A Power Steering Noise or Fluid Leak from Power Steering Pump Gear or High Pressure Hose During Extreme Low Temperature Operation (Replace Power Steering Fluid) - (Jun 4 2013) A C Pressure Switches      Subject: Power Steering Noise or Fluid Leak from Power Steering Pump, Gear or High PressureHose During Extreme Low Temperature Operation (Replace Power Steering Fluid) Models:  2014 and Prior GM Passenger Cars and...
Afterblow Enabling      The afterblow mode can be enabled using the scan tool. Theafterblow mode allows the blower motor to operate after the enginehas been turned off. This operation of the blower motor dries theevaporator core, which reduces the...
Air Conditioning (A C) Refrigerant Pressure Sensor Replacement (LGH LML)      Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement Callout Component Name Preliminary Procedures Disconnect the electrical connector from the pressuresensor. 1 A/C Refrigerant Pressure Sensor...
Air Conditioning (A C) Refrigerant Pressure Sensor Replacement (Non-HP2)      Special Tools J-39400-A Halogen Leak Detector Removal Procedure Disconnect the electrical connector from the A/C refrigerant pressure sensor.Remove the A/C refrigerant pressure sensor-(1) from the condenser...
Air Conditioning Accumulator Replacement (Non-HP2) Accumulator      Air Conditioning Accumulator Replacement Callout Component Name Preliminary Procedure Recover the refrigerant. Refer toRefrigerant Recovery and Recharging. 1 Suction Hose Nut Caution:Refer toFastener...
Air Conditioning and Heater Module Assembly Removal and Installation      Special Tools J 43181 Heater Line Quick Connect Release Tool Removal ProcedureDrain the engine coolant. Refer toCooling System Draining and Filling. 43181 Using the J 43181 heater line quick connect release tool...
Air Conditioning Clutch Drive Plate Adjustment      Install the clutch plate assembly. Note:Ensure the drive plate does not drag against the pulley whenthe pulley is rotated. Measure the air gap between the pulley and the drive plate.Adjust the shims to achieve a...
Air Conditioning Compressor Bracket Replacement (LGH LML) Compressor      Air Conditioning Compressor Bracket Replacement Callout Component Name Preliminary ProceduresRemove the air conditioning compressor. Refer toAir Conditioning Compressor ReplacementRemove the auxiliary generator, if...
Air Conditioning Compressor Bracket Replacement (Non-HP2) Compressor      Removal ProcedureRemove the A/C compressor. Refer toAir Conditioning Compressor Replacement.Remove the A/C belt tensioner bolts.Remove the A/C belt tensioner. Remove the A/C compressor bracket mounting bolts.Remove the A/C...
Air Conditioning Compressor Control Module Programming and Setup Compressor      Air Conditioning Compressor Control ModuleReplacement If the Air Conditioning Compressor Control Module is replacedit must be programmed with the latest operating software andvehicle calibrations. Refer toService Programming...
Air Conditioning Compressor Oil Balancing (HP2) Compressor      Special ToolsGE-48997 A/C POE Oil Injector (HP2)J 39400-A Halogen Leak DetectorJ 45037 A/C Oil InjectorDraining ProcedureRemove the A/C compressor from the vehicle. Refer toAir Conditioning Compressor Replacement....
Air Conditioning Compressor Oil Balancing (Non-HP2) Compressor      Draining Procedure Important:Drain and measure as much of the refrigerant oil as possiblefrom the removed compressor. Before draining oil, position the compressor verdically(clutch facing upwards) and let it sit for 1...
Air Conditioning Compressor Replacement (LGH LML) Compressor      Air Conditioning Compressor Replacement Callout Component Name Preliminary ProceduresRecover the refrigerant. Refer toRefrigerant Recovery and RechargingRemove the drive belt. Refer toDrive Belt ReplacementRemove the...
Air Conditioning Condenser Replacement (LGH LML) Condenser      Special Tools GE-39400-AHalogen Leak Detector For equivalent regional tools, Refer toSpecial Tools Removal ProcedureRecover the refrigerant. Refer toRefrigerant Recovery and Recharging.Remove tie bar. Refer toFront End Upper...
Air Conditioning Cycling Switch Replacement (Non-HP2)      Special Tools J-39400-A Halogen Leak Detector Removal ProcedureDisconnect the electrical connector from the A/C low pressure switch. Remove the A/C low pressure switch from the accumulator.Remove the O-ring and...
Air Conditioning Evaporator Tube Replacement (Non-HP2) Evaporator      Special Tools J-39400-A Halogen Leak Detector Removal ProcedureRecover the refrigerant. Refer toRefrigerant Recovery and Recharging.Remove the upper radiator air baffle and deflector. Refer toRadiator Air Upper Baffle and...
Air Conditioning O-Ring Seal Replacement      Removal Procedure Disassemble the A/C refrigerant components. Refer to theappropriate repair procedureFor compression style fittings use a back up wrench on thefitting (2) and loosen the fitting nut (1).For banjo style...
Air Conditioning Refrigerant High Pressure Service Valve Replacement      Air Conditioning Refrigerant High Pressure Service Valve Replacement Callout Component Name Preliminary ProcedureRemove the service port cap.Recover the refrigerant. Refer toRefrigerant Recovery and Recharging. 1...
Air Conditioning Refrigerant Service Valve Core Replacement      Air Conditioning Refrigerant Service Valve Core Replacement Callout Component Name Preliminary ProcedureRemove the service port cap.Recover the refrigerant. Refer toRefrigerant Recovery and Recharging. 1 Air...
Air Conditioning Refrigerant Temperature Sensor Replacement      Removal ProcedureRemove the instrument panel compartment door assembly. Refer toInstrument Panel Compartment Door Replacement.Remove the instrument panel inflatable restraint module. Refer toAirbag Instrument Panel Module...
Air Conditioning Refrigerant Temperature Sensor Replacement - part 2      Remove the air conditioning refrigerant temperature sensor harness grommet-(1) fromthe top of the air conditioning and heater module assembly-(2). Pull the air conditioning refrigerant temperature sensor-(1) up and out of...
Air Conditioning System Seal Replacement      Removal Procedure Remove the seal washer from the A/C refrigerantcomponent. Important:Cap or tape the open A/C refrigerant components immediatelyto prevent system contamination. Inspect the seal washer for signs of damage...
Air Delivery Description and Operation      The air delivery description and operation is divided into 7areas: HVAC Control ComponentsAir SpeedAuxiliary Air SpeedAir DeliveryAuxiliary Air DeliveryRecirculation OperationAutomatic OperationHVAC Control Components HVAC...
Air Delivery Description and Operation      The air delivery controls are divided into four areas: HVAC Control ComponentsAir SpeedAir DeliveryRecirculation OperationHVAC Control Components HVAC Control Module The HVAC control module is a class-2 device thatinterfaces...