Grand AM L4-151 2.5L (1986): Powertrain Management
Also for this vehicle: Grand AM L4-121 2.0L (1988), Grand AM L4-138 2.3L DOHC VIN D MFI (1994), Grand AM L4-138 2.3L VIN A FI HP (1989), Grand AM L4-138 2.3L VIN A MFI (1992), Grand AM L4-144 2.4L DOHC VIN T SFI (1997), Grand AM V6-181 3.0L (1985), Grand AM V6-3.4L VIN E (2001), Grand AM V6-3100 3.1L MFI VIN M (1994), Grand AM V6-3100 3.1L VIN M SFI (1996), Grand AM V6-3300 3.3L (1992).
Diagnostics
Maintenance
Engine
Transmission
Brakes
Electrical
Steering & suspension
Heating & A/C
Body & interior
Choose Sections to see everything in a chapter, or a chapter title to start at its first page.
Relays and Modules - Powertrain Management22 pages
Relays and Modules - Computers and Control Systems21 pages
Engine Control Module › Component Information20 pages
Technical Service Bulletins › Technical Service Bulletins for Engine Control Module:11 pages
- 04-06-04-054B › Nov › 10 › Engine Controls - Aftermarket Accessory Usage2
- 91648 › Aug › 91 › ECM/PCM - Damaged and/or Mis-Diagnosed
- 89666 › Aug › 89 › ECM - Packard 32 Way Connector Identification
- 8861 › Sep › 87 › Engine Controls - ECM May Contain Wrong PROM
- 87640 › May › 87 › ECM - Revised Replacement Procedure234
- 86814A › May › 86 › ECM - Metri-Pack Series 150 Terminal Removal
- 86SM1 › Aug › 85 › Electronic Control Module - Exchange Program
- Locations › ECM Power Supply2
- Description and Operation › Electronic Spark Timing (EST)2
- Testing and Inspection › Diagnostic Trouble Code Descriptions2
- Service and Repair › Engine Control Module (ECM) Replacement23
- Idle/Throttle Speed Control Unit › Component Information › Specifications
- Relays and Modules - Fuel Delivery and Air Induction › Idle/Throttle Speed Control Unit › Component Information › Specifications
Sensors and Switches - Powertrain Management26 pages
Sensors and Switches - Computers and Control Systems22 pages
- Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications
- Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications2
- Crankshaft Position Sensor › Component Information › Locations
- Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Technical Service Bulletins › A/C - Corrections to Service Manual
- Knock Sensor › Component Information › Locations
- Manifold Pressure/Vacuum Sensor › Component Information › Specifications2345
Oxygen Sensor › Component Information3 pages
- Power Steering Pressure Switch › Component Information › Locations › Power Steering Idle Speed Switch2
Throttle Position Sensor › Component Information › Technical Service Bulletins2 pages
- Transmission Position Switch/Sensor, A/T › Component Information › Testing and Inspection2
- Vehicle Speed Sensor › Component Information › Locations › Automatic Trans.2
Sensors and Switches - Fuel Delivery and Air Induction › Throttle Position Sensor › Component Information › Technical Service Bulletins2 pages
Sensors and Switches - Ignition System2 pages
Tune-up and Engine Performance Checks38 pages
Fuel Pressure › System Information3 pages
Idle Speed › System Information3 pages
Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins4 pages
- Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
- Firing Order › Component Information › Specifications › Ignition Firing Order
Spark Plug Wire <--> [Ignition Cable] › Component Information › Technical Service Bulletins4 pages
Customer Interest for Spark Plug Wire:2 pages
All Technical Service Bulletins for Spark Plug Wire:2 pages
Distributor, Ignition14 pages
- Distributor Retard Control › Component Information › Description and Operation › Distributor Spark Vacuum Retard Delay Valve (DS-VRDV)2
Distributor Vacuum Control › Component Information8 pages
- Vacuum Spark Delay Valve › Component Information › Description and Operation › Delay Valve Trapped Spark (DV-TS)234
Spark Plug › Component Information3 pages
- Compression Check › System Information › Specifications
- Valve Clearance › System Information › Specifications2
Computers and Control Systems107 pages
- Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Technical Service Bulletins › A/C - Corrections to Service Manual
- Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications
- Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications2
- Crankshaft Position Sensor › Component Information › Locations
Engine Control Module › Component Information20 pages
Technical Service Bulletins › Technical Service Bulletins for Engine Control Module:11 pages
- 04-06-04-054B › Nov › 10 › Engine Controls - Aftermarket Accessory Usage2
- 91648 › Aug › 91 › ECM/PCM - Damaged and/or Mis-Diagnosed
- 89666 › Aug › 89 › ECM - Packard 32 Way Connector Identification
- 8861 › Sep › 87 › Engine Controls - ECM May Contain Wrong PROM
- 87640 › May › 87 › ECM - Revised Replacement Procedure234
- 86814A › May › 86 › ECM - Metri-Pack Series 150 Terminal Removal
- 86SM1 › Aug › 85 › Electronic Control Module - Exchange Program
- Locations › ECM Power Supply2
- Description and Operation › Electronic Spark Timing (EST)2
- Testing and Inspection › Diagnostic Trouble Code Descriptions2
- Service and Repair › Engine Control Module (ECM) Replacement23
- Idle Speed/Throttle Actuator - Electronic › Component Information › Locations23
- Idle Up Control Valve › Component Information › Technical Service Bulletins › Engine Controls - Service Manual Updated Pages2345
- Idle/Throttle Speed Control Unit › Component Information › Specifications
- Knock Sensor › Component Information › Locations
- Malfunction Indicator Lamp › Component Information › Diagrams › Diagram Information and Instructions2
- Manifold Pressure/Vacuum Sensor › Component Information › Specifications2345
- Memory Calibration Unit › Component Information › Technical Service Bulletins › PROM/MEMCAL - Identification Marks2
- Mixture Control Solenoid › Component Information › Specifications
Oxygen Sensor › Component Information3 pages
- Power Steering Pressure Switch › Component Information › Locations › Power Steering Idle Speed Switch2
Relays and Modules - Computers and Control Systems23 pages
Engine Control Module › Component Information22 pages
Technical Service Bulletins13 pages
- Engine Controls - Aftermarket Accessory Usage2
Technical Service Bulletins for Engine Control Module:11 pages
- 04-06-04-054B › Nov › 10 › Engine Controls - Aftermarket Accessory Usage2
- 91648 › Aug › 91 › ECM/PCM - Damaged and/or Mis-Diagnosed
- 89666 › Aug › 89 › ECM - Packard 32 Way Connector Identification
- 8861 › Sep › 87 › Engine Controls - ECM May Contain Wrong PROM
- 87640 › May › 87 › ECM - Revised Replacement Procedure234
- 86814A › May › 86 › ECM - Metri-Pack Series 150 Terminal Removal
- 86SM1 › Aug › 85 › Electronic Control Module - Exchange Program
- Locations › ECM Power Supply2
- Description and Operation › Electronic Spark Timing (EST)2
- Testing and Inspection › Diagnostic Trouble Code Descriptions2
- Service and Repair › Engine Control Module (ECM) Replacement23
- Idle/Throttle Speed Control Unit › Component Information › Specifications
Sensors and Switches - Computers and Control Systems22 pages
- Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications
- Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications2
- Crankshaft Position Sensor › Component Information › Locations
- Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Technical Service Bulletins › A/C - Corrections to Service Manual
- Knock Sensor › Component Information › Locations
- Manifold Pressure/Vacuum Sensor › Component Information › Specifications2345
Oxygen Sensor › Component Information3 pages
- Power Steering Pressure Switch › Component Information › Locations › Power Steering Idle Speed Switch2
Throttle Position Sensor › Component Information › Technical Service Bulletins2 pages
- Transmission Position Switch/Sensor, A/T › Component Information › Testing and Inspection2
- Vehicle Speed Sensor › Component Information › Locations › Automatic Trans.2
- Shift Light › Component Information › Testing and Inspection2
- Tach Filter › Component Information › Locations
Throttle Position Sensor › Component Information › Technical Service Bulletins4 pages
- Customer Interest: › 866GAS53 › Jul › 86 › Engine - Reduced Performance, Poor Idle or Surge
- All Technical Service Bulletins: › 866GAS53 › Jul › 86 › Engine - Reduced Performance, Poor Idle or Surge
- All Other Service Bulletins for Throttle Position Sensor: › 876GAS39 › May › 87 › Engine - Miss/Backfire/Hard Start/Hesitation or Stall2
- All Other Service Bulletins for Throttle Position Sensor: › 876GAS39 › May › 87 › Engine - Miss/Backfire/Hard Start/Hesitation or Stall
- Transmission Position Switch/Sensor, A/T › Component Information › Testing and Inspection2
- Vehicle Speed Sensor › Component Information › Locations › Automatic Trans.2
- Vehicle Speed Sensor Signal Buffer › Component Information › Locations
Emission Control Systems68 pages
Managed Air Injection Reactor (MAIR) <--> [Air Injection]21 pages
- Electric Divert/Electric Air Switching (ED/ES) <--> [Air Diverter Valve] › Component Information › Description and Operation › Diverter Valve2345678
- Air Injection Check Valve › Component Information › Testing and Inspection
- Air Injection Control Valve › Component Information › Description and Operation › Electric Air Control & Electric Air Switching (EAC/ES)234
- Air Injection Filter › Component Information › Service and Repair
- Air Injection Pump › Component Information › Testing and Inspection23
- Pulsair Valve, Secondary Air Injection › Component Information › Description and Operation › Pulse Air Injection Reaction (Pair, Pulsair)2
- Differential Vacuum Delay & Separator Valve <--> [Vacuum Delay Valve, Air Injection] › Component Information › Description and Operation2
Catalytic Converter › Component Information4 pages
Evaporative Emissions System18 pages
- Bowl Vent Valve › Component Information › Testing and Inspection
- Canister Purge Control Valve › Component Information › Technical Service Bulletins › Engine Controls - Service Manual Updated Pages2345
- Canister Purge Solenoid › Component Information › Description and Operation
- Evaporative Emission Control Canister › Component Information › Locations23456
Thermal Vacuum Valve - EVAP › Component Information5 pages
Exhaust Gas Recirculation14 pages
- EGR Vacuum Solenoid Valve <--> [EGR Control Solenoid] › Component Information › Locations2
- EGR Valve › Component Information › Technical Service Bulletins › Engine - Spark Knock at Part Throttle
Thermal Vacuum Valve, EGR › Component Information10 pages
- Vacuum Delay Valve, EGR › Component Information › Description and Operation
- Positive Crankcase Ventilation › Crankcase Vent › Component Information › Locations
- Thermostatic Air Cleaner › Thermostatic Air Cleaner Vacuum Switch › Component Information › Description and Operation › Thermac Secondary Vacuum Break Thermal Vacuum Switch (SVB-TVS)23
- Vacuum Restrictor › Component Information › Locations
Fuel Delivery and Air Induction82 pages
Fuel Pressure › System Information3 pages
- Fuel Pressure Release › System Information › Service and Repair
Idle Speed › System Information3 pages
Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins8 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: › 09-06-03-004D › Dec › 10 › Electrical - MIL ON/DTC's Set By Various Control Modules234
- All Other Service Bulletins for Air Filter Element: › 09-06-03-004D › Dec › 10 › Electrical - MIL ON/DTC's Set By Various Control Modules
Fuel › Component Information › Technical Service Bulletins27 pages
- Customer Interest: › 9367 › Oct › 92 › Vehicle - Effect of Fuel Volatility On Driveability2
All Technical Service Bulletins:10 pages
- 05-06-04-022G › Oct › 10 › Fuel System - TOP TIER Detergent Gasoline (Canada)23
- 04-06-04-047I › Aug › 09 › Fuel System - 'TOP TIER' Detergent Gasoline Information2
- 570102 › Jun › 95 › Fuel - Reformulated/Oxygenated Gasolines
- 9367 › Oct › 92 › Vehicle - Effect of Fuel Volatility On Driveability2
- 8906 › Oct › 89 › Fuel - Use of MTBE At 15% or Less In Gasolines
- 86654A › Jul › 86 › Engine - Hard Start/No Start, Suspected Vapor Lock
All Other Service Bulletins for Fuel:15 pages
- 09-06-03-004D › Dec › 10 › Electrical - MIL ON/DTC's Set By Various Control Modules234
- 10-08-45-001B › Oct › 10 › Electrical - Information For Electrical Ground Repair234567
- 07-06-04-019D › Jun › 10 › Electrical - Intermittent MIL/DTC P2138/Reduced Power2
- 06-08-45-004 › May › 06 › Electrical - Instrument Panel & General Wiring Repair2
All Other Service Bulletins for Fuel:0 pages
- 09-06-03-004D › Dec › 10 › Electrical - MIL ON/DTC's Set By Various Control Modules
- 10-08-45-001B › Oct › 10 › Electrical - Information For Electrical Ground Repair
- 07-06-04-019D › Jun › 10 › Electrical - Intermittent MIL/DTC P2138/Reduced Power
- 06-08-45-004 › May › 06 › Electrical - Instrument Panel & General Wiring Repair
- Fuel Filler Cap › Component Information › Description and Operation
- Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
Fuel Pump › Fuel Pressure › System Information3 pages
- Fuel Return Line › Component Information › Technical Service Bulletins › Fuel - Feed/Return Pipe Repair Precautions
- Fuel Supply Line › Component Information › Technical Service Bulletins › Fuel - Feed/Return Pipe Repair Precautions
- Idle Speed/Throttle Actuator - Electronic › Component Information › Locations23
- Idle Up Control Valve › Component Information › Technical Service Bulletins › Engine Controls - Service Manual Updated Pages2345
- Idle/Throttle Speed Control Unit › Component Information › Specifications
- Relays and Modules - Fuel Delivery and Air Induction › Idle/Throttle Speed Control Unit › Component Information › Specifications
Sensors and Switches - Fuel Delivery and Air Induction › Throttle Position Sensor › Component Information › Technical Service Bulletins2 pages
Throttle Body › Component Information8 pages
Throttle Position Sensor › Component Information › Technical Service Bulletins2 pages
Ignition System45 pages
- Firing Order › Component Information › Specifications › Ignition Firing Order
- Crankshaft Position Sensor › Component Information › Locations
Distributor, Ignition14 pages
- Distributor Retard Control › Component Information › Description and Operation › Distributor Spark Vacuum Retard Delay Valve (DS-VRDV)2
Distributor Vacuum Control › Component Information8 pages
- Vacuum Spark Delay Valve › Component Information › Description and Operation › Delay Valve Trapped Spark (DV-TS)234
Spark Plug Wire <--> [Ignition Cable] › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins:2 pages
- All Other Service Bulletins for Spark Plug Wire: › 876GAS39 › May › 87 › Engine - Miss/Backfire/Hard Start/Hesitation or Stall2
- All Other Service Bulletins for Spark Plug Wire: › 876GAS39 › May › 87 › Engine - Miss/Backfire/Hard Start/Hesitation or Stall
Ignition Coil › Component Information6 pages
- Knock Sensor › Component Information › Locations
- Pick-Up Coil, Ignition › Component Information › Specifications
Sensors and Switches - Ignition System2 pages
Spark Plug › Component Information3 pages
- Tach Filter › Component Information › Locations
- Distributor Thermal Vacuum Switch <--> [Thermal Vacuum Valve, Vacuum/Dist. Advance] › Component Information › Description and Operation › Choke Vacuum Break Distributor Thermal Vacuum Switch2345
- Vacuum Advance Control Solenoid › Component Information › Description and Operation
- Vacuum Restrictor › Component Information › Locations
Transmission Control Systems12 pages
Actuators and Solenoids - Transmission and Drivetrain › Actuators and Solenoids - A/T › Torque Converter Clutch Solenoid, A/T › Component Information › Technical Service Bulletins10 pages
- Customer Interest: › 87723C › Jul › 88 › Engine - Stalls on Reverse/Drive Engagement23
- All Technical Service Bulletins: › 87723C › Jul › 88 › Engine - Stalls on Reverse/Drive Engagement23
- All Other Service Bulletins for Torque Converter Clutch Solenoid: › 09-06-03-004D › Dec › 10 › Electrical - MIL ON/DTC's Set By Various Control Modules234
- All Other Service Bulletins for Torque Converter Clutch Solenoid: › 09-06-03-004D › Dec › 10 › Electrical - MIL ON/DTC's Set By Various Control Modules
- Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T › Transmission Position Switch/Sensor, A/T › Component Information › Testing and Inspection2
PROM - Programmable Read Only Memory › Component Information49 pages
Technical Service Bulletins8 pages
All Technical Service Bulletins for PROM - Programmable Read Only Memory:4 pages
All Other Service Bulletins for PROM - Programmable Read Only Memory:2 pages
- Description and Operation › CALPAK2345
- Service and Repair › CALPAK2345