Ascender 4WD V8-5.3L (2004): Powertrain Management

Also for this vehicle: Ascender 2WD L6-4.2L (2003), Ascender 2WD V8-5.3L (2004), Ascender 4WD L6-4.2L (2003).

Diagnostics Maintenance Engine Transmission Brakes Electrical Steering & suspension Heating & A/C Body & interior

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01Relays and Modules Relays and Modules: Sections
02Sensors and Switches Sensors and Switches: Sections
03Maintenance Maintenance: Sections
04Engine, Cooling and Exhaust Engine, Cooling and Exhaust: Sections
05Powertrain Management Powertrain Management: Sections
- Relays and Modules - Powertrain Management66 pages
  - Relays and Modules - Computers and Control Systems64 pages
    Body Control Module › Component Information40 pages
    Locations2
    Diagrams › Connector Views2 3 4 5 6 7 8 9 10
    Description and Operation › Body Control Module2
    Testing and Inspection › Initial Inspection and Diagnostic Overview2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
    Electronic Throttle Control Module › Component Information › Locations2 3 4 5
    Engine Control Module › Component Information19 pages
    Locations
    Diagrams › Connector Views2 3 4 5 6 7 8
    Service and Repair › Removal and Installation2 3 4 5 6 7 8 9 10
  - Relays and Modules - Fuel Delivery and Air Induction › Fuel Pump Relay › Component Information › Locations
  - Relays and Modules - Ignition System › Ignition Relay › Component Information › Locations
- Sensors and Switches - Powertrain Management80 pages
  - Sensors and Switches - Computers and Control Systems57 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2
    Air Flow Meter/Sensor › Component Information › Locations2 3 4 5
    Camshaft Position Sensor › Component Information › Locations2 3 4
    Crankshaft Position Sensor › Component Information5 pages
    Locations › Component Locations2
    Service and Repair › Crankshaft Position (CKP) Sensor2 3
    Engine Temperature Sensor › Component Information › Locations2 3
    Fuel Level Sensor › Component Information › Description and Operation2
    Fuel Tank Pressure Sensor › Component Information › Description and Operation2
    Intake Air Temperature Sensor › Component Information › Locations2 3 4 5
    Knock Sensor › Component Information › Locations2 3 4 5
    Manifold Pressure/Vacuum Sensor › Component Information › Locations2 3 4
    Oil Pressure Sensor › Component Information › Specifications2 3
    Oxygen Sensor › Component Information9 pages
    Technical Service Bulletins › Engine Controls - Misfires on One Bank
    Service Precautions › Heated Oxygen and Oxygen Sensor Notice2
    Service and Repair › HO2S - Bank 1 Sensor 12 3 4 5 6
    Transmission Position Switch/Sensor, A/T › Component Information › Locations2 3 4 5 6
    Vehicle Speed Sensor › Component Information › Locations2
  - Sensors and Switches - Fuel Delivery and Air Induction8 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2
    Air Flow Meter/Sensor › Component Information › Locations2 3 4 5
    Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
  - Sensors and Switches - Ignition System15 pages
    Camshaft Position Sensor › Component Information › Locations2 3 4
    Crankshaft Position Sensor › Component Information5 pages
    Locations › Component Locations2
    Service and Repair › Crankshaft Position (CKP) Sensor2 3
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Technical Service Bulletins › Ignition - Can't Remove Key From Ignition Lock
    Knock Sensor › Component Information › Locations2 3 4 5
- Tune-up and Engine Performance Checks6 pages
- Computers and Control Systems273 pages
  - Accelerator Pedal Position Sensor › Component Information › Locations2
  - Air Flow Meter/Sensor › Component Information › Locations2 3 4 5
  - Intake Air Temperature Sensor › Component Information › Locations2 3 4 5
  - Body Control Module › Component Information40 pages
    Locations2
    Diagrams › Connector Views2 3 4 5 6 7 8 9 10
    Description and Operation › Body Control Module2
    Testing and Inspection › Initial Inspection and Diagnostic Overview2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
  - Camshaft Position Sensor › Component Information › Locations2 3 4
  - Crankshaft Position Sensor › Component Information5 pages
    Locations › Component Locations2
    Service and Repair › Crankshaft Position (CKP) Sensor2 3
  - Crankshaft Position Timing Ring › Component Information › Description and Operation
  - Data Link Connector › Component Information6 pages
    Locations2
    Description and Operation › Data Link Communications2 3 4
  - Electronic Throttle Actuator › Component Information › Locations2 3 4
  - Electronic Throttle Control Module › Component Information › Locations2 3 4 5
  - Engine Control Module › Component Information19 pages
    Locations
    Diagrams › Connector Views2 3 4 5 6 7 8
    Service and Repair › Removal and Installation2 3 4 5 6 7 8 9 10
  - Engine Temperature Sensor › Component Information › Locations2 3
  - Fuel Level Sensor › Component Information › Description and Operation2
  - Fuel Tank Pressure Sensor › Component Information › Description and Operation2
  - Information Bus › Component Information14 pages
    Locations2 3 4 5
    Testing and Inspection › Initial Inspection and Diagnostic Overview2 3 4 5 6 7 8 9
  - Knock Sensor › Component Information › Locations2 3 4 5
  - Malfunction Indicator Lamp › Component Information › Testing and Inspection › Malfunction Indicator Lamp (MIL) Inoperative2 3 4 5 6
  - Manifold Pressure/Vacuum Sensor › Component Information › Locations2 3 4
  - Oil Pressure Sensor › Component Information › Specifications2 3
  - Oxygen Sensor › Component Information9 pages
    Technical Service Bulletins › Engine Controls - Misfires on One Bank
    Service Precautions › Heated Oxygen and Oxygen Sensor Notice2
    Service and Repair › HO2S - Bank 1 Sensor 12 3 4 5 6
  - Relays and Modules - Computers and Control Systems64 pages
    Body Control Module › Component Information40 pages
    Locations2
    Diagrams › Connector Views2 3 4 5 6 7 8 9 10
    Description and Operation › Body Control Module2
    Testing and Inspection › Initial Inspection and Diagnostic Overview2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
    Electronic Throttle Control Module › Component Information › Locations2 3 4 5
    Engine Control Module › Component Information19 pages
    Locations
    Diagrams › Connector Views2 3 4 5 6 7 8
    Service and Repair › Removal and Installation2 3 4 5 6 7 8 9 10
  - Sensors and Switches - Computers and Control Systems57 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2
    Air Flow Meter/Sensor › Component Information › Locations2 3 4 5
    Camshaft Position Sensor › Component Information › Locations2 3 4
    Crankshaft Position Sensor › Component Information5 pages
    Locations › Component Locations2
    Service and Repair › Crankshaft Position (CKP) Sensor2 3
    Engine Temperature Sensor › Component Information › Locations2 3
    Fuel Level Sensor › Component Information › Description and Operation2
    Fuel Tank Pressure Sensor › Component Information › Description and Operation2
    Intake Air Temperature Sensor › Component Information › Locations2 3 4 5
    Knock Sensor › Component Information › Locations2 3 4 5
    Manifold Pressure/Vacuum Sensor › Component Information › Locations2 3 4
    Oil Pressure Sensor › Component Information › Specifications2 3
    Oxygen Sensor › Component Information9 pages
    Technical Service Bulletins › Engine Controls - Misfires on One Bank
    Service Precautions › Heated Oxygen and Oxygen Sensor Notice2
    Service and Repair › HO2S - Bank 1 Sensor 12 3 4 5 6
    Transmission Position Switch/Sensor, A/T › Component Information › Locations2 3 4 5 6
    Vehicle Speed Sensor › Component Information › Locations2
  - Transmission Position Switch/Sensor, A/T › Component Information › Locations2 3 4 5 6
  - Vehicle Speed Sensor › Component Information › Locations2
- Emission Control Systems7 pages
  - Catalytic Converter › Component Information › Technical Service Bulletins2 pages
    All Technical Service Bulletins for Catalytic Converter: › IB04-03-S001 › Feb › 04 › Emissions - Misfire DTC's/Catalytic Converter Damage
    Customer Interest for Catalytic Converter: › IB04-03-S001 › Feb › 04 › Emissions - Misfire DTC's/Catalytic Converter Damage
  - Evaporative Emissions System › Canister Purge Solenoid › Component Information › Locations
  - Positive Crankcase Ventilation › Component Information › Technical Service Bulletins4 pages
    All Technical Service Bulletins for Positive Crankcase Ventilation: › SB05-01-S005 › Jul › 05 › Engine - Oil Leak in Extreme Cold Conditions2
    Customer Interest for Positive Crankcase Ventilation: › SB05-01-S005 › Jul › 05 › Engine - Oil Leak in Extreme Cold Conditions2
- Fuel Delivery and Air Induction43 pages
  - Fuel Pressure › System Information › Specifications
  - Fuel Pressure Release › System Information › Service Precautions
  - Accelerator Pedal › Component Information › Technical Service Bulletins › Interior - Heated Seats Inoperative/Pedals Don't Recall
  - Accelerator Pedal Position Sensor › Component Information › Locations2
  - Air Flow Meter/Sensor › Component Information › Locations2 3 4 5
  - Fuel › Component Information › Technical Service Bulletins › Fuel System - Top Tier Detergent Gasoline Information2
  - Fuel Filter › Fuel Pressure Release › System Information › Service Precautions
  - Fuel Injector › Component Information › Technical Service Bulletins9 pages
    All Technical Service Bulletins:4 pages
    IB07-02-S005 › Dec › 07 › Fuel System - MIL ON/Multiple DTC's Set
    IB07-02-S003 › Jun › 07 › Fuel System - MIL ON/DTC's Set/ Driveability Issues
    IB07-02-S001 › Mar › 07 › Fuel System - Hard Start/MIL ON/DTC's Set/Misfire
    SN082004-014 › Aug › 04 › Engine Controls - Misfires on One Bank
    Customer Interest: › IB07-02-S005 › Dec › 07 › Fuel System - MIL ON/Multiple DTC's Set
    All Other Service Bulletins for Fuel Injector:4 pages
    SB06-04-S004 › May › 06 › Electrical - MIL ON/DTC's P0480/P0526/P1481 Set2
    SB06-05-S001 › Apr › 06 › 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation2
    All Other Service Bulletins for Fuel Injector:0 pages
    SB06-04-S004 › May › 06 › Electrical - MIL ON/DTC's P0480/P0526/P1481 Set
    SB06-05-S001 › Apr › 06 › 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation
  - Fuel Pump2 pages
    Fuel Pressure › System Information › Specifications
    Fuel Pump Relay › Component Information › Locations
  - Fuel Tank7 pages
    Fuel Filler Neck › Component Information › Technical Service Bulletins6 pages
    All Technical Service Bulletins for Fuel Filler Neck: › SB04-02-S004 › Sep › 04 › Fuel System - Pump Nozzle Shuts OFF/Tank Slow to Fill2 3
    Customer Interest for Fuel Filler Neck: › SB04-02-S004 › Sep › 04 › Fuel System - Pump Nozzle Shuts OFF/Tank Slow to Fill2 3
    Fuel Gauge Sender › Component Information › Diagrams
  - Intake Air Plenum › Intake Air Plenum Gasket › Component Information › Technical Service Bulletins › Engine Controls - Idle Misfire/DTC's P0171/P0174
  - Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
  - Relays and Modules - Fuel Delivery and Air Induction › Fuel Pump Relay › Component Information › Locations
  - Sensors and Switches - Fuel Delivery and Air Induction8 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2
    Air Flow Meter/Sensor › Component Information › Locations2 3 4 5
    Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
  - Throttle Body › Component Information › Diagrams
- Ignition System35 pages
  - Firing Order › Component Information › Specifications
  - Ignition Timing › Number One Cylinder › Component Information › Locations
  - Camshaft Position Sensor › Component Information › Locations2 3 4
  - Crankshaft Position Sensor › Component Information5 pages
    Locations › Component Locations2
    Service and Repair › Crankshaft Position (CKP) Sensor2 3
  - Ignition Coil › Component Information › Diagrams
  - Ignition Relay › Component Information › Locations
  - Knock Sensor › Component Information › Locations2 3 4 5
  - Relays and Modules - Ignition System › Ignition Relay › Component Information › Locations
  - Sensors and Switches - Ignition System15 pages
    Camshaft Position Sensor › Component Information › Locations2 3 4
    Crankshaft Position Sensor › Component Information5 pages
    Locations › Component Locations2
    Service and Repair › Crankshaft Position (CKP) Sensor2 3
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Technical Service Bulletins › Ignition - Can't Remove Key From Ignition Lock
    Knock Sensor › Component Information › Locations2 3 4 5
  - Spark Plug › Component Information › Technical Service Bulletins › Ignition System - New Spark Plugs and Gapping
- Transmission Control Systems83 pages
  - Actuators and Solenoids - Transmission and Drivetrain25 pages
    Actuators and Solenoids - A/T17 pages
    Pressure Regulating Solenoid, A/T › Component Information › Locations2 3 4 5
    Shift Solenoid, A/T › Component Information › Technical Service Bulletins4 pages
    All Technical Service Bulletins for Shift Solenoid: › SB04-05-S009 › Jul › 04 › A/T - SES Lamp ON/DTC P0757/Slipping/Poor Performance2
    Customer Interest for Shift Solenoid: › SB04-05-S009 › Jul › 04 › A/T - SES Lamp ON/DTC P0757/Slipping/Poor Performance2
    Torque Converter Clutch Solenoid, A/T › Component Information › Locations2 3 4 5 6 7 8
    Actuators and Solenoids - Transfer Case › Transfer Case Actuator › Component Information8 pages
    Technical Service Bulletins6 pages
    Customer Interest for Transfer Case Actuator: › SB04-05-S007 › Jul › 04 › 4X4 System - Inoperative/DTC C0379/Svc. 4WD Lamp ON2 3
    All Technical Service Bulletins for Transfer Case Actuator: › SB04-05-S007 › Jul › 04 › 4X4 System - Inoperative/DTC C0379/Svc. 4WD Lamp ON2 3
    Locations › Front Axle Actuator2
  - Relays and Modules - Transmission and Drivetrain › Relays and Modules - Transfer Case › Control Module, Transfer Case › Component Information27 pages
    Technical Service Bulletins22 pages
    All Technical Service Bulletins for Control Module:11 pages
    SB06-05-S002 › Aug › 06 › Drivetrain - 4WD Lamp and System Inoperative2
    SB05-13-S002 › Mar › 05 › Audio System - Speaker Buzzing in 4X4 Mode2 3
    SB05-05-S001 › Feb › 05 › Drivetrain - 4WD Light ON/4WD Inoperative/DTC C05502
    SB04-05-S011 › Oct › 04 › 4X4 System - Delayed Front Wheel Engagement
    SN082004-023 › Aug › 04 › Engine Controls - Lack Of Power/TCC Engaged by 20mph
    SB04-05-S010 › Jul › 04 › 4X4 System - Inoperative/AWD/4WD Lamps ON2
    Customer Interest:10 pages
    SB06-05-S002 › Aug › 06 › Drivetrain - 4WD Lamp and System Inoperative2
    SB05-13-S002 › Mar › 05 › Audio System - Speaker Buzzing in 4X4 Mode2 3
    SB05-05-S001 › Feb › 05 › Drivetrain - 4WD Light ON/4WD Inoperative/DTC C05502
    SB04-05-S011 › Oct › 04 › 4X4 System - Delayed Front Wheel Engagement
    SB04-05-S010 › Jul › 04 › 4X4 System - Inoperative/AWD/4WD Lamps ON2
    All Other Service Bulletins for Control Module: › SN082004-023 › Aug › 04 › Engine Controls - Lack Of Power/TCC Engaged by 20mph
    Service and Repair › Transfer Case Shift Control Module Replacement2 3 4 5
  - Sensors and Switches - Transmission and Drivetrain31 pages
    Sensors and Switches - A/T14 pages
    Brake Switch - TCC › Component Information › Locations
    Shift Interlock Switch › Component Information › Locations2
    Throttle Position Sensor/Switch, A/T › Component Information › Specifications
    Transmission Position Switch/Sensor, A/T › Component Information › Locations2 3 4 5 6
    Transmission Speed Sensor, A/T › Component Information › Locations2 3 4
    Sensors and Switches - Transfer Case17 pages
    Four Wheel Drive Selector Switch › Component Information › Diagrams
    Gear Sensor/Switch, Transfer Case › Component Information › Technical Service Bulletins › Engine Controls - Lack Of Power/TCC Engaged by 20mph
    Speed Sensor, Transfer Case › Component Information15 pages
    Technical Service Bulletins8 pages
    All Technical Service Bulletins for Speed Sensor:4 pages
    SB07-05-S001 › Sep › 07 › Drivetrain - 'Service 4WD' Lamp ON/DTC C0374
    SB06-05-S001 › Apr › 06 › 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation2
    SN041405-009 › Apr › 05 › Transfer Case - MIL ON/DTC C0374/Erratic 4WD Operation
    Customer Interest:3 pages
    SB07-05-S001 › Sep › 07 › Drivetrain - 'Service 4WD' Lamp ON/DTC C0374
    SB06-05-S001 › Apr › 06 › 4WD System - 4WD Lamp ON/DTC C0374/Erratic 4WD Operation2
    All Other Service Bulletins for Speed Sensor: › SN041405-009 › Apr › 05 › Transfer Case - MIL ON/DTC C0374/Erratic 4WD Operation
    Diagrams › Shift Control Switch2 3
    Service and Repair › Transfer Case Speed Sensor Replacement - Front2 3 4
- PROM - Programmable Read Only Memory › Component Information › Technical Service Bulletins27 pages
  - All Technical Service Bulletins:13 pages
    SB05-01-S006 › Aug › 05 › Engine Controls - Engine Ticking Noise at Idle2
    SB05-01-S004 › Apr › 05 › Engine Controls - SES Lamp ON/DTC P0483 Set2
    SB05-05-S001 › Feb › 05 › Drivetrain - 4WD Light ON/4WD Inoperative/DTC C05502
    SB05-01-S001 › Jan › 05 › Engine Controls - Engine Oil Life Monitor Won't Reset2
    SB04-01-S005 › Oct › 04 › Engine Controls - Higher Than Normal Engine Temperature
    SB04-05-S010 › Jul › 04 › 4X4 System - Inoperative/AWD/4WD Lamps ON2
    SB04-05-S006 › Jul › 04 › A/T - Harsh PARK To DRIVE or REVERSE Shifts2
  - Customer Interest:11 pages
    SB05-01-S006 › Aug › 05 › Engine Controls - Engine Ticking Noise at Idle2
    SB05-01-S004 › Apr › 05 › Engine Controls - SES Lamp ON/DTC P0483 Set2
    SB05-05-S001 › Feb › 05 › Drivetrain - 4WD Light ON/4WD Inoperative/DTC C05502
    SB05-01-S001 › Jan › 05 › Engine Controls - Engine Oil Life Monitor Won't Reset2
    SB04-01-S005 › Oct › 04 › Engine Controls - Higher Than Normal Engine Temperature
    SB04-05-S010 › Jul › 04 › 4X4 System - Inoperative/AWD/4WD Lamps ON2
  - All Other Service Bulletins for PROM - Programmable Read Only Memory: › SB05-13-S002 › Mar › 05 › Audio System - Speaker Buzzing in 4X4 Mode2 3
  - All Other Service Bulletins for PROM - Programmable Read Only Memory: › SB05-13-S002 › Mar › 05 › Audio System - Speaker Buzzing in 4X4 Mode
06Transmission and Drivetrain Transmission and Drivetrain: Sections
07Brakes and Traction Control Brakes and Traction Control: Sections
08Starting and Charging Starting and Charging: Sections
09Power and Ground Distribution Power and Ground Distribution: Sections
10Steering and Suspension Steering and Suspension: Sections
11Heating and Air Conditioning Heating and Air Conditioning: Sections
12Restraint Systems Restraint Systems: Sections
13Accessories and Optional Equipment Accessories and Optional Equipment: Sections
14Body and Frame Body and Frame: Sections
15Cruise Control Cruise Control: Sections
16Instrument Panel, Gauges and Warning Indicators Instrument Panel, Gauges and Warning Indicators: Sections
17Lighting and Horns Lighting and Horns: Sections
18Windows and Glass Windows and Glass: Sections
19Wiper and Washer Systems Wiper and Washer Systems: Sections