G 3500 1 Ton Van V6-262 4.3L (1985): Powertrain Management

Also for this vehicle: G 3500 1 Ton Van L6-250 4.1L VIN D 2-bbl (1982), G 3500 1 Ton Van V8-305 5.0L (1986), G 3500 1 Ton Van V8-350 5.7L (1989), G 3500 1 Ton Van V8-350 5.7L VIN E 2-bbl (1984), G 3500 1 Ton Van V8-350 5.7L VIN K TBI (1987), G 3500 1 Ton Van V8-350 5.7L VIN L 4-bbl (1985), G 3500 1 Ton Van V8-350 5.7L VIN M 4-bbl (1983), G 3500 1 Ton Van V8-379 6.2L DSL (1985), G 3500 1 Ton Van V8-379 6.2L DSL VIN J FI (1992), G 3500 1 Ton Van V8-393 6.5L DSL VIN P (1995), G 3500 1 Ton Van V8-454 7.4L (1989), G 3500 1 Ton Van V8-454 7.4L VIN N TBI (1995), G 3500 1 Ton Van V8-5.7L VIN R (1996).

Choose Sections to see everything in a chapter, or a chapter title to start at its first page.

1. 01Relays and ModulesRelays and Modules: Sections
2. 02Sensors and SwitchesSensors and Switches: Sections
3. 03MaintenanceMaintenance: Sections
4. 04Engine, Cooling and ExhaustEngine, Cooling and Exhaust: Sections
5. 05Powertrain ManagementPowertrain Management: Sections
   • Relays and Modules - Powertrain Management25 pages

     • Relays and Modules - Computers and Control Systems19 pages

       • Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Locations › Typical Electronic Spark System (ESC)2
       • Engine Control Module › Component Information15 pages

         • Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage234567
         • Description and Operation › "E" Cell234
         • Testing and Inspection › Diagnostic Trouble Code Descriptions234
       • Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications › Electrical Specifications2
     • Relays and Modules - Fuel Delivery and Air Induction › Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications › Electrical Specifications2
     • Relays and Modules - Ignition System4 pages

       • Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Locations › Typical Electronic Spark System (ESC)2
       • Ignition Control Module › Component Information › Testing and Inspection2
   • Sensors and Switches - Powertrain Management40 pages

     • Sensors and Switches - Computers and Control Systems26 pages

       • Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications23
       • Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications23
       • Engine Speed Signal <--> [Engine Speed Sensor] › Component Information › Description and Operation
       • Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Specifications
       • Knock Sensor › Component Information › Locations › Electronic Spark Control Knock Sensor23456
       • Manifold Pressure/Vacuum Sensor › Component Information3 pages

         • Specifications
         • Locations › Manifold Differential Pressure Sensor2
       • Oxygen Sensor › Component Information4 pages

         • Technical Service Bulletins › RTV Sealants - Use on Engines With Oxygen Sensors2
         • Locations › Exhaust Oxygen Sensor2
       • Throttle Position Sensor › Component Information3 pages

         • Specifications
         • Locations › California2
       • Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation
       • Vehicle Speed Sensor › Component Information › Technical Service Bulletins › Electrical - VSS Connector Mislabeled
     • Sensors and Switches - Fuel Delivery and Air Induction8 pages

       • Auxiliary Fuel Tank Control <--> [Fuel Tank Selector Switch] › Component Information › Locations234
       • Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
       • Throttle Position Sensor › Component Information3 pages

         • Specifications
         • Locations › California2
     • Sensors and Switches - Ignition System › Knock Sensor › Component Information › Locations › Electronic Spark Control Knock Sensor23456
   • Tune-up and Engine Performance Checks32 pages

     • Fuel Pressure › System Information6 pages

       • Specifications
       • System Diagnosis › Fuel Pump Flow Test - Fuel Injected2345
     • Idle Speed › System Information3 pages

       • Specifications
       • Adjustments › Idle Speed2
     • Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins6 pages

       • Customer Interest: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
       • All Technical Service Bulletins: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
       • All Other Service Bulletins for Air Filter Element: › 926B71A › Apr › 92 › Engine - Block Heater Leaks2
       • All Other Service Bulletins for Air Filter Element: › 926B71A › Apr › 92 › Engine - Block Heater Leaks
     • Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
     • Firing Order › Component Information › Specifications › Ignition Firing Order
     • Ignition Timing2 pages

       • Number One Cylinder › Component Information › Locations › Number 1 Cylinder Location
       • Timing Marks and Indicators › System Information › Locations
     • Spark Plug Wire <--> [Ignition Cable] › Component Information › Technical Service Bulletins2 pages

       • Customer Interest for Spark Plug Wire: › 93356D › Oct › 92 › Engine - Miss, Hesitation, or Roughness
       • All Technical Service Bulletins for Spark Plug Wire: › 93356D › Oct › 92 › Engine - Miss, Hesitation, or Roughness
     • Distributor, Ignition › Component Information6 pages

       • Testing and Inspection23
       • Service and Repair › Distributor Service23
     • Spark Plug › Component Information › Specifications › Torque2
     • Compression Check › System Information › Specifications
     • Valve Clearance › System Information › Specifications2
   • Computers and Control Systems110 pages

     • Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Specifications
     • Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications23
     • Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications23
     • Assembly Line Diagnostic Link (ALDL) Connector <--> [Data Link Connector] › Component Information › Locations › California Emissions2
     • Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Locations › Typical Electronic Spark System (ESC)2
     • Engine Control Module › Component Information15 pages

       • Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage234567
       • Description and Operation › "E" Cell234
       • Testing and Inspection › Diagnostic Trouble Code Descriptions234
     • Engine Speed Signal <--> [Engine Speed Sensor] › Component Information › Description and Operation
     • Throttle Opener/Kicker Control <--> [Idle Speed/Throttle Actuator - Mechanical] › Component Information10 pages

       • Locations › Throttle Kicker Solenoid234
       • Testing and Inspection › Chart C-2T-1, Idle Speed Control Check Throttle Kicker23456
     • Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications › Electrical Specifications2
     • Knock Sensor › Component Information › Locations › Electronic Spark Control Knock Sensor23456
     • Malfunction Indicator Lamp › Component Information › Description and Operation2
     • Manifold Pressure/Vacuum Sensor › Component Information3 pages

       • Specifications
       • Locations › Manifold Differential Pressure Sensor2
     • Memory Calibration Unit › Component Information › Technical Service Bulletins › PROM/MEMCAL - Identification Marks2
     • Mixture Control Solenoid › Component Information3 pages

       • Specifications
       • Locations › M/C Solenoid2
     • Oxygen Sensor › Component Information4 pages

       • Technical Service Bulletins › RTV Sealants - Use on Engines With Oxygen Sensors2
       • Locations › Exhaust Oxygen Sensor2
     • Relays and Modules - Computers and Control Systems19 pages

       • Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Locations › Typical Electronic Spark System (ESC)2
       • Engine Control Module › Component Information15 pages

         • Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage234567
         • Description and Operation › "E" Cell234
         • Testing and Inspection › Diagnostic Trouble Code Descriptions234
       • Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications › Electrical Specifications2
     • Sensors and Switches - Computers and Control Systems26 pages

       • Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications23
       • Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications23
       • Engine Speed Signal <--> [Engine Speed Sensor] › Component Information › Description and Operation
       • Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Specifications
       • Knock Sensor › Component Information › Locations › Electronic Spark Control Knock Sensor23456
       • Manifold Pressure/Vacuum Sensor › Component Information3 pages

         • Specifications
         • Locations › Manifold Differential Pressure Sensor2
       • Oxygen Sensor › Component Information4 pages

         • Technical Service Bulletins › RTV Sealants - Use on Engines With Oxygen Sensors2
         • Locations › Exhaust Oxygen Sensor2
       • Throttle Position Sensor › Component Information3 pages

         • Specifications
         • Locations › California2
       • Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation
       • Vehicle Speed Sensor › Component Information › Technical Service Bulletins › Electrical - VSS Connector Mislabeled
     • Throttle Position Sensor › Component Information3 pages

       • Specifications
       • Locations › California2
     • Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation
     • Vehicle Speed Sensor › Component Information › Technical Service Bulletins › Electrical - VSS Connector Mislabeled
     • Vehicle Speed Sensor Signal Buffer › Component Information › Technical Service Bulletins › Electrical - Speed Sensor Buffer Connector Labeled Wrong
   • Emission Control Systems65 pages

     • Air Injection12 pages

       • Air Diverter Solenoid › Component Information › Locations
       • Electric Air Control Valve <--> [Air Diverter Valve] › Component Information › Locations › Air Divert Valve234
       • Air Injection Hose/Tube › Component Information › Locations
       • Air Injection Pump › Component Information › Locations › California2
       • Pulsair Valve, Secondary Air Injection › Component Information › Service and Repair
       • Pulsed Secondary Air Injection › Component Information › Description and Operation23
     • Catalytic Converter › Component Information › Description and Operation2345
     • Deceleration Valve › Component Information › Locations › California2
     • Early Fuel Evaporation (EFE) › EFE Valve › Component Information › Locations › California2
     • Evaporative Emissions System26 pages

       • Bowl Vent Valve › Component Information › Testing and Inspection
       • Canister Purge Control Valve › Component Information › Technical Service Bulletins › Fuel Evap Purge Solenoid Valve - Inoperative23
       • Canister Purge Solenoid › Component Information8 pages

         • Technical Service Bulletins › Canister Purge Solenoid Valve - Inoperative23
         • Locations › Canister Purge Solenoid23
         • Description and Operation › Computer Command Control (C3) System2
       • Evaporative Emission Control Canister › Component Information12 pages

         • Locations
         • Description and Operation › Vapor Storage Canister, Carbureted Engines234567891011
       • Thermal Vacuum Valve - EVAP › Component Information › Testing and Inspection › Canister Purge Thermal Vacuum Switch (CP-TVS)2
     • Exhaust Gas Recirculation9 pages

       • EGR Control Solenoid › Component Information › Locations › EGR Solenoid23
       • EGR Valve › Component Information5 pages

         • Locations › California2
         • Testing and Inspection › Negative Back Pressure EGR Valve23
       • Thermal Vacuum Valve, EGR › Component Information › Testing and Inspection
     • Positive Crankcase Ventilation › Crankcase Vent › Component Information › Locations › California2
     • Thermostatic Air Cleaner › Component Information › Locations23456
     • Vacuum Restrictor › Component Information › Locations
   • Fuel Delivery and Air Induction88 pages

     • Fuel Pressure › System Information6 pages

       • Specifications
       • System Diagnosis › Fuel Pump Flow Test - Fuel Injected2345
     • Fuel Pressure Release › System Information › Service and Repair
     • Idle Speed › System Information3 pages

       • Specifications
       • Adjustments › Idle Speed2
     • Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins6 pages

       • Customer Interest: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
       • All Technical Service Bulletins: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
       • All Other Service Bulletins for Air Filter Element: › 926B71A › Apr › 92 › Engine - Block Heater Leaks2
       • All Other Service Bulletins for Air Filter Element: › 926B71A › Apr › 92 › Engine - Block Heater Leaks
     • Carburetor6 pages

       • Accelerator Pump › Component Information › Locations › Accelerator Pump Solenoid23
       • Choke Pull-off › Choke Pull-off Delay Valve › Component Information › Locations
       • Choke Thermostat/Heater › Component Information › Diagrams › Diagram Information and Instructions2
     • Fuel › Component Information › Technical Service Bulletins › Fuel System - TOP TIER Detergent Gasoline (Canada)234567
     • Fuel Filler Cap › Component Information › Description and Operation
     • Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
     • Fuel Injector › Component Information › Technical Service Bulletins › Fuel System - Fuel Injector Maintenance Cleaning23
     • Fuel Pump › Fuel Pressure › System Information6 pages

       • Specifications
       • System Diagnosis › Fuel Pump Flow Test - Fuel Injected2345
     • Fuel Reservoir › Component Information › Technical Service Bulletins2 pages

       • Customer Interest for Fuel Reservoir: › 87T29A › Dec › 86 › Engine - Stall/No Start Condition
       • All Technical Service Bulletins for Fuel Reservoir: › 87T29A › Dec › 86 › Engine - Stall/No Start Condition
     • Fuel Return Line › Component Information › Technical Service Bulletins › Fuel - Feed/Return Pipe Repair
     • Fuel Supply Line › Component Information › Technical Service Bulletins14 pages

       • Customer Interest: › 906C89 › Sep › 90 › Engine - No Start After Extended Storage23456
       • All Technical Service Bulletins for Fuel Supply Line:7 pages

         • 906C89 › Sep › 90 › Engine - No Start After Extended Storage23456
         • 89316C › Nov › 88 › Fuel - Feed/Return Pipe Repair
       • All Other Service Bulletins for Fuel Supply Line: › 89316C › Nov › 88 › Fuel - Feed/Return Pipe Repair
     • Fuel Tank5 pages

       • Fuel Tank Pressure Release Valve › Component Information › Testing and Inspection
       • Auxiliary Fuel Tank Control <--> [Fuel Tank Selector Switch] › Component Information › Locations234
     • Throttle Opener/Kicker Control <--> [Idle Speed/Throttle Actuator - Mechanical] › Component Information10 pages

       • Locations › Throttle Kicker Solenoid234
       • Testing and Inspection › Chart C-2T-1, Idle Speed Control Check Throttle Kicker23456
     • Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications › Electrical Specifications2
     • Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
     • Relays and Modules - Fuel Delivery and Air Induction › Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications › Electrical Specifications2
     • Sensors and Switches - Fuel Delivery and Air Induction8 pages

       • Auxiliary Fuel Tank Control <--> [Fuel Tank Selector Switch] › Component Information › Locations234
       • Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
       • Throttle Position Sensor › Component Information3 pages

         • Specifications
         • Locations › California2
     • Throttle Position Sensor › Component Information3 pages

       • Specifications
       • Locations › California2
   • Ignition System43 pages

     • Firing Order › Component Information › Specifications › Ignition Firing Order
     • Ignition Timing2 pages

       • Number One Cylinder › Component Information › Locations › Number 1 Cylinder Location
       • Timing Marks and Indicators › System Information › Locations
     • Distributor, Ignition › Component Information6 pages

       • Testing and Inspection23
       • Service and Repair › Distributor Service23
     • Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Locations › Typical Electronic Spark System (ESC)2
     • Spark Plug Wire <--> [Ignition Cable] › Component Information › Technical Service Bulletins2 pages

       • Customer Interest for Spark Plug Wire: › 93356D › Oct › 92 › Engine - Miss, Hesitation, or Roughness
       • All Technical Service Bulletins for Spark Plug Wire: › 93356D › Oct › 92 › Engine - Miss, Hesitation, or Roughness
     • Ignition Coil › Component Information › Specifications234
     • Ignition Control Module › Component Information › Testing and Inspection2
     • Knock Sensor › Component Information › Locations › Electronic Spark Control Knock Sensor23456
     • Pick-Up Coil, Ignition › Component Information › Specifications234
     • Pole Piece / Reluctor Wheel, Ignition › Component Information › Service and Repair
     • Relays and Modules - Ignition System4 pages

       • Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Locations › Typical Electronic Spark System (ESC)2
       • Ignition Control Module › Component Information › Testing and Inspection2
     • Sensors and Switches - Ignition System › Knock Sensor › Component Information › Locations › Electronic Spark Control Knock Sensor23456
     • Spark Plug › Component Information › Specifications › Torque2
     • Vacuum Restrictor › Component Information › Locations
   • Transmission Control Systems9 pages

     • Actuators and Solenoids - Transmission and Drivetrain › Actuators and Solenoids - A/T3 pages

       • Shift Solenoid, A/T › Component Information › Description and Operation › Upshift Solenoid2
       • Torque Converter Clutch Solenoid, A/T › Component Information › Locations
     • Lamps and Indicators - Transmission and Drivetrain › Lamps and Indicators - A/T › Maintenance Indicator - A/T › Component Information › Technical Service Bulletins › A/T Fluid Level Indicator - Revised (Sealed)
     • Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T5 pages

       • Fluid Pressure Sensor/Switch, A/T › Component Information › Technical Service Bulletins4 pages

         • Customer Interest for Fluid Pressure Sensor/Switch: › 937A18 › Oct › 92 › A/T - Buzzing Noise at Idle2
         • All Technical Service Bulletins for Fluid Pressure Sensor/Switch: › 937A18 › Oct › 92 › A/T - Buzzing Noise at Idle2
       • Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation
   • PROM - Programmable Read Only Memory › Component Information42 pages

     • Technical Service Bulletins › Engine Controls - ECM May Contain Wrong PROM
     • Application and ID31 pages

       • Introducing the GM PROM Cross Reference Index2345678910
       • Expanded Footnotes › Footnotes 1 Thru 5023456789101112131415161718192021
     • Description and Operation › CALPAK2345
     • Service and Repair › CALPAK2345
6. 06Transmission and DrivetrainTransmission and Drivetrain: Sections
7. 07Brakes and Traction ControlBrakes and Traction Control: Sections
8. 08Starting and ChargingStarting and Charging: Sections
9. 09Power and Ground DistributionPower and Ground Distribution: Sections
10. 10Steering and SuspensionSteering and Suspension: Sections
11. 11Heating and Air ConditioningHeating and Air Conditioning: Sections
12. 12Restraint SystemsRestraint Systems: Sections
13. 13Accessories and Optional EquipmentAccessories and Optional Equipment: Sections
14. 14Body and FrameBody and Frame: Sections
15. 15Cruise ControlCruise Control: Sections
16. 16Instrument Panel, Gauges and Warning IndicatorsInstrument Panel, Gauges and Warning Indicators: Sections
17. 17Lighting and HornsLighting and Horns: Sections
18. 18Windows and GlassWindows and Glass: Sections
19. 19Wiper and Washer SystemsWiper and Washer Systems: Sections