Workshop Repair and Service Manuals GMC SIERRA
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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...
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 (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 (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 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 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 - 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 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 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 Inlet Assembly Replacement      Air Inlet Assembly Replacement Callout Component Name Preliminary ProcedureRemove the HVAC module assembly. Refer toAir Conditioning and Heater Module Assembly Removal and Installation.Disconnect the electrical...
Air Inlet Valve Actuator Replacement      Air Inlet Valve Actuator Replacement Callout Component Name Caution:In order to avoid actuator damage, DO NOT apply power to theactuator when it is not installed in the HVAC module. Preliminary ProcedureRemove the...
Ambient Air Temperature Sensor Replacement Ambient Temp Sensor      Ambient Air Temperature Sensor Replacement Callout Component Name Preliminary ProcedureRemove the top portion of the grill and gently pull forward.Refer toFront Grille Replacement.Disconnect ambient air sensor...
Blower Motor Control Module Replacement      Blower Motor Control Module Replacement Callout Component Name Preliminary ProcedureRemove the I/P insulator panel. Refer toInstrument Panel Insulator Replacement.Disconnect the blower motor control module...
Blower Motor Replacement      Removal ProcedureIf equipped, remove the sound insulator panel. Refer toInstrument Panel Insulator Replacement.Remove the blower motor insulating cover screws.Disconnect the electrical connector from the blowermotor.Remove the...
Compressor Clutch Plate Hub Assembly Replacement Compressor Compressor Clutch      Compressor Clutch Plate/Hub Assembly Replacement Callout Component Name Preliminary ProcedureRemove the air conditioning compressor belt. Refer toAir Conditioning Compressor Belt Replacement.Remove the air...
Defroster Door Replacement      Removal Procedure Remove the HVAC module. Refer toAir Conditioning and Heater Module Assembly Removal and Installation.If equipped remove the heat stakes-(1) from theHVAC module-(2) with a screwdriver and a hammer. If...
Drive Belt Idler Pulley Replacement - without Air Conditioning      Removal Procedure Loosen the idler pulley bolt.Remove the drive belt. Refer toDrive Belt Replacement.Remove the idler pulley.Installation Procedure Install the idler pulley.Install the idler pulley bolt until...
Driver or Passenger Seat Back Ventilation Heating and Cooling Blower Replacement (Denali with KB6)      Driver or Passenger Seat Back Ventilation Heating and Cooling Blower Replacement Callout Component Name 1 Front Seat Back Cushion Finish Panel Procedure Using a nylon flat-bladed tool push the tabs in onthe side...
Duct Air Temperature Sensor Replacement - Lower Right Side      Duct Air Temperature Sensor Replacement - Lower Right Side Callout Component Name Preliminary ProceduresRemove the front floor console (if equipped). Refer toFront Floor Console Replacement.Remove the radio front...
Duct Air Temperature Sensor Replacement - Lower Left Side      Duct Air Temperature Sensor Replacement - Lower Left Side Callout Component Name Preliminary Procedure Remove the knee bolster. Refer toKnee Bolster Replacement. 1 Air Temperature Sensor – LH Tip:Disconnect...
Duct Air Temperature Sensor Replacement - Upper Right Side      Duct Air Temperature Sensor Replacement - Upper Right Side Callout Component Name Preliminary ProcedureRemove the instrument panel upper trim panel with windshielddefroster nozzle grille. Refer ToInstrument Panel...
Duct Air Temperature Sensor Replacement - Upper Left Side      Duct Air Temperature Sensor Replacement - Upper Left Side Callout Component Name Preliminary Procedure Remove the instrument panel to the service position. Refer toInstrument Panel Service Positioning. 1...
Expansion (Orifice) Tube Replacement      Expansion (Orifice) Tube Replacement Callout Component Name Preliminary ProceduresRecover the refrigerant. Refer toRefrigerant Recovery and Recharging.Remove the air cleaner outlet duct. Refer toAir Cleaner Resonator...
Floor Air Outlet Duct Replacement - Left Side      Removal Procedure Remove the push pin from the left floor air outletduct-(3).Remove the left floor duct-(3) from the rightfloor air outlet duct-(2).Installation Procedure Install the left floor air outlet duct-(3) to...
Floor Air Outlet Duct Replacement - Right Side      Floor Air Outlet Duct Replacement - Right Side Callout Component Name Preliminary ProcedureRemove the I/P insulator. Refer toInstrument Panel Insulator Replacement.Remove the front floor console side trim panel...
Flushing (HP2)      Special ToolsJ 41447 Leak Detection DyeJ 42220 Universal 12V Leak Detection LampJ 43600 ACR 2000 Air Conditioning Service CenterJ 45268 Flush Adapter Kit Important:Flushing with the ACR 2000 is not intended to remove metal...
Flushing (Non HP2)      Special ToolsJ 41447 Leak Detection DyeJ 42220 Universal 12V Leak Detection LampJ 43600 ACR 2000 Refrigerant StationJ 45268 Flush Adapter Kit Important:Flushing is not intended to remove metal from the A/C system. Flushing is...
Front Seat Cushion Ventilation Blower Replacement (Denali with KB6)      Front Seat Cushion Ventilation Blower Replacement Callout Component Name Preliminary Procedure Remove the front seat. Refer toFront Seat Removal and Installation - Bucket. 1 Front Seat Adjuster Outer Finish...
Front Seat Heater Control Module Replacement      Front Seat Heater Control Module Replacement Callout Component Name Preliminary Procedure Remove the front driver seat. Refer toFront Seat Removal and Installation - Bucket. 1 Driver Seat Adjuster Outer...
Front Seat Heater Switch Replacement      Removal ProcedureRemove door upper trim panel. Refer toUpper Extension Trim Panel Replacement. Pull the door trim panel away from the door and support thebottom of the trim panel on the door panel hooks. Refer toFront Side...
Heater and Air Conditioning Evaporator and Blower Upper Case Replacement      Heater and Air Conditioning Evaporator and Blower Upper Case Replacement Callout Component Name Preliminary ProceduresRemove the air conditioning and heater module assembly. Refer toAir Conditioning and Heater Module...
Heater and Air Conditioning Evaporator and Blower Lower Case Replacement      Heater and Air Conditioning Evaporator and Blower Lower Case Replacement Callout Component Name Preliminary ProceduresRemove the air conditioning and heater module assembly. Refer toAir Conditioning and Heater Module...
Heater Core Cover Replacement Heater Core      Heater Core Cover Replacement Callout Component Name Preliminary Procedure Remove the HVAC module. Refer toAir Conditioning and Heater Module Assembly Removal and Installation. 1 Heater Core Cover Screw...
Heater Core Replacement Heater Core      Heater Core Replacement Callout Component Name Preliminary ProcedureRemove the HVAC module. Refer toAir Conditioning and Heater Module Assembly Removal and Installation.Disconnect the wiring harness retainer from the...
Heater Inlet Hose Replacement (LML) Heater Lines      Heater Inlet Hose Replacement Callout Component Name Preliminary ProceduresDrain the coolant. Refer toCooling System Draining and Filling.Remove the air cleaner outlet duct. Refer toAir Cleaner Outlet Duct...
Heater Outlet Hose Replacement (LGH and LML)      Heater Outlet Hose Replacement Callout Component Name Preliminary ProceduresDrain the coolant. Refer toCooling System Draining and Filling.Disconnect the radiator surge tank hose from the heater outlet hose. Refer...
Heater Outlet Hose Replacement (Non-HP2)      Removal ProcedureDrain the cooling system. Refer toCooling System Draining and Filling.Remove the air intake tube.Remove the heater and surge tank hoses from the mountingclip. Squeeze the plastic retainer release tabs....
HVAC Control Module Replacement      HVAC Control Module Replacement Callout Component Name Preliminary ProcedureRemove the instrument panel accessory trim plate. Refer toInstrument Panel Accessory Trim Plate Replacement.Remove the accessory switch...
Inside Air Temperature Sensor Replacement      Removal ProcedureRemove the left windshield garnish molding. Refer toWindshield Pillar Garnish Molding Replacement.Remove the left center pillar assist handle. Refer toRoof Rail Rear Assist Handle Replacement.Remove the center...
Instrument Panel Center Air Outlet Replacement (without RPO SLT)      Instrument Panel Center Air Outlet Replacement Callout Component Name 1 Instrument Panel Accessory Trim Plate Procedure Refer toInstrument Panel Accessory Trim Plate Replacement 2 Instrument Panel Center...
Instrument Panel Outer Air Outlet Replacement - Right Side (With RPO SLT)      Instrument Panel Outer Air Outlet Replacement - Right Side Callout Component Name Preliminary Procedure Remove the instrument panel center trim panel. Refer toInstrument Panel Center Trim Panel Replacement. 1...
Instrument Panel Outer Air Outlet Replacement - Right Side (Without RPO SLT)      Instrument Panel Outer Air Outlet Replacement - Right Side Callout Component Name 1 Instrument Panel Upper Trim Panel Procedure Refer toInstrument Panel Upper Trim Panel Replacement. 2 Instrument Panel...
Instrument Panel Outer Air Outlet Replacement - Left Side (without RPO SLT)      Instrument Panel Outer Air Outlet Replacement - Left Side Callout Component Name 1 Instrument Panel Trim Plate Procedure Refer toInstrument Panel Trim Plate Replacement 2 Instrument Panel Air Outlet...
Instrument Panel Outer Air Outlet Replacement - Left Side (with RPO SLT)      Instrument Panel Outer Air Outlet Replacement - Left Side Callout Component Name 1 Instrument Panel Air Outlet Assembly– Left Tip:Use a flat-bladed plastic trim tool to release theretainer clip on the right side...
Instrument Panel Upper Trim Panel with Windshield Defroster Nozzle Grille Replacement (without RPO SLT)      Instrument Panel Upper Trim Panel with Windshield Defroster Nozzle Grille Replacement Callout Component Name Preliminary Procedure Remove the windshield pillar garnish moldings. Refer toWindshield Pillar Garnish...
Mode Door Replacement - Upper Mode Control Door      Removal Procedure Note:The upper mode door is serviced with the upper HVAC modulecase. Remove the HVAC module. Refer toAir Conditioning and Heater Module Assembly Removal and Installation.Disconnect the electrical...
Mode Valve Actuator Replacement      Mode Valve Actuator Replacement Callout Component Name Caution:In order to avoid actuator damage, DO NOT apply power to theactuator when it is not installed in the HVAC module. Preliminary ProcedureRemove the knee...
PI0695A Diagnosis and Repair HVAC Blower Function - (Nov 7 2012) - part 2      arranty Information For vehicles repaired under warranty, and found to have had the above condition, use: Labor Operation Description Labor Time N9682* Diagnose/Repair – HVAC Blower Inoperative 0.3 hr Add...
PI0695A Diagnosis and Repair HVAC Blower Function - (Nov 7 2012)      Subject: Diagnosis and Repair HVAC Blower Function Models:  2008-2013 Cadillac Escalade Models 2007-2013 Chevrolet Silverado 2008-2013 Chevrolet Suburban, Tahoe 2007-2013 GMC Sierra 2008-2013 GMC Yukon...
PIT5082A HVAC Inop Temperature Or Air Distribution Mode Will Not Change - (Aug 28 2012)      Subject: HVAC Inop Temperature Or Air Distribution Mode Will Not Change Models:  2007 - 2013 Cadillac Escalade all models 2007 - 2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2007 - 2013 GMC Sierra,...
Special Tools      Illustration Tool Number/ Description GE-39037 J-39037 Charge Valve Octagon Socket GE-46246 J-46246 Valve Core Tool GE-48997 A/C POE Oil Injector (HP2) J-26549-E Orifice...
Special Tools      Illustration Tool Number/ Description J-43600 ACR-2000 Air Conditioning Service Center
Suction Hose Replacement (LZ1 L20 LC9 L9H L92)      Suction Hose Replacement Callout Component Name Preliminary Procedure Recover the refrigerant. Refer toRefrigerant Recovery and Recharging. 1 Suction Hose Bolt Caution:Refer toFastener Caution. Tighten...
Sun Load Temperature Sensor Replacement      Sun Load Temperature Sensor Replacement Callout Component Name 1 Instrument Panel Trim Panel Procedure Refer toInstrument Panel Upper Trim Panel with Windshield Defroster Nozzle Grille Replacement. 2 Sun...
Temperature Valve Actuator Replacement      Temperature Valve Actuator Replacement Callout Component Name Caution:In order to avoid actuator damage, DO NOT apply power to theactuator when it is not installed in the HVAC module. Preliminary ProcedureRemove the...
Temperature Valve Actuator Replacement - Left Side      Temperature Valve Actuator Replacement - Left Side Callout Component Name Caution:In order to avoid actuator damage, DO NOT apply power to theactuator when it is not installed in the HVAC module. Preliminary...
Temperature Valve Actuator Replacement - Right Side      Temperature Valve Actuator Replacement - Right Side Callout Component Name Caution:In order to avoid actuator damage, DO NOT apply power to theactuator when it is not installed in the HVAC module. Preliminary...
Driver Seat and Passenger Seat Heater Control Module Scan Tool Information      Heated Seat Module Scan Tool Data Parameters Parameter Expected Value Definition Operating Conditions: Ignition ON Driver Seat Back Heat Status Inactive The scan tool displays Active/Inactive. This is the...
Seat Climate Control Module Programming and Setup      This device requires no programming or setup.
Blower Motor Control Module Programming and Setup (Primary HVAC)      Blower Motor Control Module Replacement There is no setup procedure that needs to be performed forthe blower motor control module on this vehicle
Heating Ventilation and Air Conditioning Control Module Scan Tool Information - part 2      p> HVAC Control Module Scan Tool Output Controls Scan Tool Output Control Description A/C Request This command allows you to turn the A/C Relay On and Off.When the A/C Relay is commanded On, the A/C compressor...
Heating Ventilation and Air Conditioning Control Module Scan Tool Information      Table 1: HVAC Control Module Scan Tool Data Parameters Table 2: HVAC Control Module Scan Tool Output Controls HVAC Control Module Scan Tool Data Parameters Parameter Expected Value Definition Operating...
Fastener Tightening Specifications - Cooling      Fastener Tightening Specifications Application Specification Metric English A/C High Pressure Recirculation Switch 6-Y 53-lb-in A/C Low Pressure Switch 6-Y 53-lb-in A/C Refrigerant Filter...
Heating and Air Conditioning System Description and Operation (HP2) - part 3      This feature enables the electric A/C compressor to run ata speed independent of the engine. The control system will commandthe electric A/C compressor to a speed necessary to maintain adesired cooling level rather than cycle...
Heating and Air Conditioning System Description and Operation (HP2) - part 2      The semi-cooled liquid refrigerant exits the condenserand flows through the liquid line, to the orifice tube. The orifice tube is located in the liquid line between thecondenser and the evaporator. The orifice tube is the...
Heating and Air Conditioning System Description and Operation (HP2)      Engine Coolant Engine coolant is the essential element of the heatingsystem. The thermostat controls the normal engine operating coolanttemperature. The thermostat also creates a restriction for thecooling system that promotes...
Odor Correction      Eliminating Air Conditioning Odor Odors may be emitted from the air conditioning systemprimarily at start up in hot, humid climates. The followingconditions may cause the odor: Debris is present in the HVAC module.Microbial...
Refrigerant Recovery and Recharging (Non-HP2)      Special ToolsJ 43600ACR 2000 Air Conditioning Service CenterJ 45037A/C Oil Injector For equivalent regional tools, refer toSpecial Tools. Warning:To prevent personal injury, avoid breathing A/C Refrigerantand lubricant vapor...
Refrigerant Recovery and Recharging (HP2)      Special ToolsJ 43600ACR 2000 Air Conditioning Service CenterJ 45037A/C Oil InjectorGE 48997Hybrid A/C Oil Injector Adapter Hose For equivalent regional tools, refer toSpecial Tools. Warning:To prevent personal injury, avoid...
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...
Refrigerant System Specifications (Non-HP2)      Refrigerant System Specifications Application Specification Metric English PAG Oil GM P/N-12378526 for United States PAG Oil GM P/N-88900060 for Canada Accumulator Replacement 60-ml* 2-oz* * Add PAG...
Air Delivery Description and Operation - part 2      The HVAC control module sends differentsignals to the mode door actuator through the mode door controlcircuit. Zero volts drives the actuator in one direction while5-volts moves the actuator in the opposite direction.When the...
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...
Air Temperature Description and Operation - part 3      The ambient air temperature is less than 4°C (40°F).The evaporator temperature is less than 3°C (38°F).The throttle position is 100%.The A/C high side pressure is more than 2957-kPa (429-psi).The engine coolant temperature...
Air Temperature Description and Operation - part 2      Heating and A/C Operation The purpose of the heating and A/C system is to provide heated and cooled air to theinterior of the vehicle. The A/C system will also remove humidity from the interiorand reduce windshield fogging....
Air Temperature Description and Operation      The air temperature controls are divided into four areas: HVAC Control ComponentsHeating and A/C OperationEngine CoolantA/C CycleHVAC Control Components HVAC Control Module The HVAC control module is a class-2 device that...
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...
Drilling Holes into the Air Conditioning and Heater Case Module Caution      Caution:Extreme care must be taken when drilling into the air conditioning and heater casemodule. Misalignment of the hole can cause damage to the air conditioning evaporatoror temperature door requiring replacement of these...
HVAC System Control Module Programming and Setup      Each of the following service procedures may requireprogramming or setup procedures to be performed on the HVAC controlmodule or HVAC actuators. HVAC Control Module Replacement If the HVAC control module is replaced it must be...
Sensor Resistance Table      Sensor Resistance Table Temperature Ambient Air Temp Sensor or Evaporator Temp Sensor Inside Air Temp Sensor (Front or Rear) Front Upper Duct Temp Sensors Heater Duct (Lower Air Temp) Sensors, Air Temperature Sensor-...
Air Temperature Description and Operation - part 6      To place the auxiliary HVAC system in Automatic mode, the following is required: The auxiliary blower motor switch on the auxiliary HVAC control assembly must be inthe Auto position.The auxiliary mode switch on the auxiliary...
Air Temperature Description and Operation - part 5      The following conditions must be met in order for the A/C compressor clutch to turnON if they are not all met and an A/C request is made the LED on the A/C switch willflash: Ambient air temperature above 7°C (45°F)The...
Air Temperature Description and Operation - part 4      This value will not be displayedon the scan tool. The default action ensures that the HVAC system can adjust the insideair temperature near the desired temperature until the condition is fixed. The scantool parameter for the...
Air Temperature Description and Operation - part 3      The ambient air temperature sensor mounts underhood and can be affected by city traffic,by idling, and by restarting a hot engine. Therefore, the HVAC control module filtersthe value of the ambient air temperature sensor for...
Air Temperature Description and Operation - part 2      As the actuator shaft rotates the changing position signal issent to the module. Once the position signal and the commanded value are the same,the module changes the control signal to 2.5-volts. Auxiliary Air Temperature...
Air Temperature Description and Operation      The air temperature controls are divided into 7 areas: HVAC Control ComponentsHeating and A/C OperationAuxiliary Heating and A/C OperationAutomatic OperationAuxiliary Automatic OperationEngine Coolant A/C CycleHVAC Control...
Air Delivery Description and Operation - part 5      Inside Air Temperature SensorAmbient Air Temperature SensorLower Left Air Temperature SensorLower Right Air Temperature SensorUpper Left Air Temperature SensorUpper Right Air Temperature SensorRegulate blower motor...
Air Delivery Description and Operation - part 4      The motor moves the mode door tothe desired position. Front Defrost When defrost is selected, the A/C compressor is activated.The A/C compressor clutch will engage when ambient temperatures areabove 3°C (38 F). The blower...
Air Delivery Description and Operation - part 3      The blower motor control module is an interface between theHVAC control module and the blower motor. The blower motor speedcontrol, battery positive and ground circuits enable the controlmodule to operate. The HVAC control...
Air Delivery Description and Operation - part 2      As theactuator shaft rotates the changing position signal is sent to themodule. Once the position signal and the commanded value are thesame, the module changes the control signal to2.5-volts. Auxiliary Mode Actuator The...
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...
Fastener Tightening Specifications - 4WD Driveline Control      Fastener Tightening Specifications Application Specification Metric English Auxiliary Air Temperature Actuator Screws 1.6-Y 14-lb-in Auxiliary Blower Motor Processor Screws 1.6-Y 14-lb-in...
Fastener Tightening Specifications - 4WD Driveline Control      Fastener Tightening Specifications Application Specification Metric English Air Temperature Actuator Mounting Screw 1.6-Y 14-lb-in Mode Actuator Mounting Screw 1.6-Y 14-lb-in Overhead Console...