Skylark V6-173 2.8L VIN X 2-bbl (1984): Powertrain Management

Also for this vehicle: Skylark L4-138 2.3L DOHC VIN D MFI (1988), Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989), Skylark L4-138 2.3L SOHC VIN 3 MFI QUAD 4 (1992), Skylark L4-144 2.4L DOHC VIN T SFI (1997), Skylark L4-151 2.5L (1991), Skylark L4-151 2.5L VIN R TBI (1982), Skylark V6-173 2.8L VIN W FI (1985), Skylark V6-173 2.8L VIN Z 2-bbl HP (1982), Skylark V6-181 3.0L (1986), Skylark V6-191 3.1L VIN M SFI (1994), Skylark V6-204 3.3L VIN N FI (1989), Skylark V6-3100 3.1L VIN M SFI (1996).

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 Management22 pages
  - Relays and Modules - Computers and Control Systems13 pages
    Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
    Engine Control Module › Component Information10 pages
    Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage2 3 4 5 6
    Description and Operation › Computer Command Control (C-3) System2
    Testing and Inspection › Diagnostic Trouble Code Descriptions2
    Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications2
  - Relays and Modules - Fuel Delivery and Air Induction7 pages
    Choke Relay › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Choke Relay: › 856C17
    All Technical Service Bulletins for Choke Relay: › 856C17
    Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications2
    Idle Up Control Relay › Component Information › Technical Service Bulletins3 pages
    Customer Interest: › 846E35
    All Technical Service Bulletins: › 846E35
    All Other Service Bulletins for Idle Up Control Relay: › 8671253
    All Other Service Bulletins for Idle Up Control Relay: › 8671253
  - Relays and Modules - Ignition System2 pages
    Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
    Ignition Control Module › Component Information › Testing and Inspection
- Sensors and Switches - Powertrain Management46 pages
- Tune-up and Engine Performance Checks43 pages
  - Fuel Pressure › Diagnostic Connector - Fuel Pump › Component Information › Locations
  - Idle Speed › System Information3 pages
    Specifications
    Adjustments › Fast Idle Speed2
  - Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins5 pages
    Customer Interest: › 04-07-30-013B2
    All Technical Service Bulletins: › 04-07-30-013B2
    All Other Service Bulletins for Air Filter Element: › 871023
    All Other Service Bulletins for Air Filter Element: › 871023
  - 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
    All Technical Service Bulletins for Spark Plug Wire: › 93356D
  - Distributor, Ignition22 pages
    Distributor Noise Shield › Component Information › Locations
    Distributor Retard Control › Component Information › Description and Operation › Distributor Spark Vacuum Retard Delay Valve (DS-VRDV)2
    Distributor Vacuum Control › Component Information15 pages
    Description and Operation › Distributor Spark Vacuum Modulator Valve (DS-VMV)2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Distributor Vacuum Modulator Valve (DVMV)2 3
    Vacuum Spark Delay Valve › Component Information › Description and Operation › Delay Valve Trapped Spark (DV-TS)2 3 4
  - Spark Plug › Component Information › Technical Service Bulletins › Spark Plug - Gap Information2 3
  - Compression Check › System Information › Specifications
  - Valve Clearance › System Information › Specifications2
- Computers and Control Systems124 pages
  - Intake Air Temperature Sensor › Component Information › Specifications
  - Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications2 3 4 5 6 7 8
  - Coolant Temperature Sensor/Switch (For Computer) › Component Information › Technical Service Bulletins › Coolant Sensor - Improved Kit
  - Data Link Connector › Component Information › Description and Operation
  - Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
  - Engine Control Module › Component Information10 pages
    Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage2 3 4 5 6
    Description and Operation › Computer Command Control (C-3) System2
    Testing and Inspection › Diagnostic Trouble Code Descriptions2
  - Idle Speed/Throttle Actuator - Electronic › Component Information › Locations
  - Idle Speed/Throttle Actuator - Mechanical › Idle Speed Vacuum Solenoid Valve › Component Information › Locations
  - Idle Up Control Valve › Idle Up Control Relay › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Idle Up Control Relay: › 846E35
    All Technical Service Bulletins for Idle Up Control Relay: › 846E35
  - Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications2
  - Knock Sensor › Component Information › Technical Service Bulletins › Engine - Poor Performance/Driveability/Fuel Mileage2
  - Malfunction Indicator Lamp › Component Information › Description and Operation
  - Manifold Pressure/Vacuum Sensor › Component Information15 pages
    Technical Service Bulletins › MAP - Revised Chart C-1D, DTC's 33, 34, 63, 642 3 4 5 6 7 8 9 10 11
    Locations › Manifold Absolute Pressure (MAP) Sensor2 3 4
  - Memory Calibration Unit › Component Information › Technical Service Bulletins › PROM/MEMCAL - Identification Marks2
  - Mixture Control Solenoid › Component Information5 pages
    Specifications2
    Adjustments › Precautions2 3
  - Oxygen Sensor › Component Information › Technical Service Bulletins › Oxygen Sensors - Silica Contamination
  - Relays and Modules - Computers and Control Systems13 pages
    Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
    Engine Control Module › Component Information10 pages
    Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage2 3 4 5 6
    Description and Operation › Computer Command Control (C-3) System2
    Testing and Inspection › Diagnostic Trouble Code Descriptions2
    Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications2
  - Sensors and Switches - Computers and Control Systems42 pages
    Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications2 3 4 5 6 7 8
    Coolant Temperature Sensor/Switch (For Computer) › Component Information › Technical Service Bulletins › Coolant Sensor - Improved Kit
    Intake Air Temperature Sensor › Component Information › Specifications
    Knock Sensor › Component Information › Technical Service Bulletins › Engine - Poor Performance/Driveability/Fuel Mileage2
    Manifold Pressure/Vacuum Sensor › Component Information15 pages
    Technical Service Bulletins › MAP - Revised Chart C-1D, DTC's 33, 34, 63, 642 3 4 5 6 7 8 9 10 11
    Locations › Manifold Absolute Pressure (MAP) Sensor2 3 4
    Oxygen Sensor › Component Information › Technical Service Bulletins › Oxygen Sensors - Silica Contamination
    Throttle Position Sensor › Component Information › Technical Service Bulletins › Engine Controls - TPS Specifications2
    Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation › Park/Neutral Switch2
    Vehicle Speed Sensor › Component Information › Technical Service Bulletins10 pages
    Customer Interest for Vehicle Speed Sensor: › 84712572 3 4 5
    All Technical Service Bulletins for Vehicle Speed Sensor: › 84712572 3 4 5
  - Throttle Position Sensor › Component Information › Technical Service Bulletins › Engine Controls - TPS Specifications2
  - Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation › Park/Neutral Switch2
  - Vehicle Speed Sensor › Component Information › Technical Service Bulletins10 pages
    Customer Interest for Vehicle Speed Sensor: › 84712572 3 4 5
    All Technical Service Bulletins for Vehicle Speed Sensor: › 84712572 3 4 5
  - Vehicle Speed Sensor Signal Buffer › Component Information › Locations
- Emission Control Systems158 pages
  - Air Injection30 pages
    Air Diverter Valve › Component Information16 pages
    Locations › Air Diverter Valve2 3 4 5 6 7 8
    Description and Operation › Diverter Valve2 3 4 5 6 7 8
    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)2 3 4
    Air Injection Filter › Component Information › Service and Repair
    Air Injection Pump › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Air Injection Pump: › 846E1
    All Technical Service Bulletins for Air Injection Pump: › 846E1
    Air Injection Pump Pulley › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Air Injection Pump Pulley: › 846E1
    All Technical Service Bulletins for Air Injection Pump Pulley: › 846E1
    Pulsair Valve, Secondary Air Injection › Component Information › Description and Operation › Pulse Air Injection Reaction (Pair, Pulsair)2
    Vacuum Delay Valve, Air Injection › Component Information › Description and Operation2
  - Catalytic Converter › Component Information4 pages
    Technical Service Bulletins › Emissions - Effects of Top Engine Cleaner on Converter
    Service and Repair › Catalyst Removal2 3
  - Deceleration Valve › Component Information › Technical Service Bulletins68 pages
    Recalls:16 pages
    84C1012 pages
    Jun8 pages
    85 › Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    All Other Service Bulletins for Deceleration Valve:52 pages
    846C1236 pages
    Jul › Component Information › Technical Service Bulletins4 pages
    Customer Interest for Choke Pull-off: › 846C122
    All Technical Service Bulletins for Choke Pull-off: › 846C122
    Component Information › Technical Service Bulletins32 pages
    Recalls for Deceleration Valve:16 pages
    84C1012 pages
    Jun8 pages
    85 › Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    All Technical Service Bulletins for Deceleration Valve:16 pages
    84C1012 pages
    Jun8 pages
    85 › Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recalls for Deceleration Valve:16 pages
    84C1012 pages
    Jun8 pages
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    85 › Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
    Recall - Deceleration Valve Inspection/Replacement › Recall - Deceleration Valve Inspection/Replacement2 3 4
  - Early Fuel Evaporation (EFE)9 pages
    EFE Heater › Component Information › Locations2 3
    Thermal Vacuum Valve, EFE › Component Information › Description and Operation › Early Fuel Evaporation Distributor TVS (EFE-DTVS)2 3 4
    Vacuum Check Valve, EFE › Component Information › Description and Operation › Early Fuel Evaporation Check Valve (EFE-CV)2
  - Evaporative Emissions System24 pages
    Bowl Vent Solenoid › Component Information › Locations2 3 4
    Bowl Vent Valve › Component Information › Testing and Inspection
    Canister Purge Control Valve › Component Information › Description and Operation2
    Canister Purge Solenoid › Component Information › Locations2 3 4 5 6 7
    Evaporative Emission Control Canister › Component Information › Description and Operation2 3 4 5
    Thermal Vacuum Valve - EVAP › Component Information5 pages
    Description and Operation › Canister Purge Thermal Vacuum Switch (CP-TVS)2 3
    Testing and Inspection › Canister Purge Thermal Vacuum Switch (CP-TVS)2
  - Exhaust Gas Recirculation14 pages
    EGR Vacuum Solenoid Valve <--> [EGR Control Solenoid] › Component Information › Description and Operation
    EGR Valve › Component Information › Service and Repair2
    Thermal Vacuum Valve, EGR › Component Information10 pages
    Description and Operation › EGR Canister Purge Thermal Vacuum Switch (EGR-CP-TVS)2 3 4 5
    Testing and Inspection › EGR Canister Purge Thermal Vacuum Switch (EGR-CP-TVS)2 3 4 5
    Vacuum Delay Valve, EGR › Component Information › Description and Operation
  - Positive Crankcase Ventilation › Component Information › Description and Operation2 3 4 5
  - Thermostatic Air Cleaner › Thermostatic Air Cleaner Vacuum Switch › Component Information › Description and Operation › Thermac Secondary Vacuum Break Thermal Vacuum Switch (SVB-TVS)2 3
  - Vacuum Restrictor › Component Information › Locations
- Fuel Delivery and Air Induction79 pages
  - Fuel Pressure › Diagnostic Connector - Fuel Pump › Component Information › Locations
  - Fuel Pressure Release › System Information › Service and Repair
  - Idle Speed › System Information3 pages
    Specifications
    Adjustments › Fast Idle Speed2
  - Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins4 pages
    Customer Interest for Air Filter Element: › 04-07-30-013B2
    All Technical Service Bulletins for Air Filter Element: › 04-07-30-013B2
  - Carburetor28 pages
    Bowl Vent Solenoid › Component Information › Locations2 3 4
    Carburetor Float › Component Information › Technical Service Bulletins › Carburetor Float - External Level Checking Tool2 3 4 5 6 7
    Choke Pull-off › Component Information › Technical Service Bulletins4 pages
    Customer Interest for Choke Pull-off: › 846C122
    All Technical Service Bulletins for Choke Pull-off: › 846C122
    Choke Relay › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Choke Relay: › 856C17
    All Technical Service Bulletins for Choke Relay: › 856C17
    Choke Thermostat/Heater › Component Information › Locations2 3
    Thermal Vacuum Valve - Carb › Component Information8 pages
    Description and Operation › Choke Vacuum Break Distributor Thermal Vacuum Switch2 3 4
    Testing and Inspection › Choke Vacuum Break Thermal Vacuum Switch (CVB-TVS)2 3 4
  - Diagnostic Connector - Fuel Pump › Component Information › Locations
  - Fuel › Component Information › Technical Service Bulletins › Fuel System - TOP TIER Detergent Gasoline (Canada)2 3 4 5 6 7 8 9
  - 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 › Tools - Introduction Of The Fuel Injector Tester2
  - Fuel Pump › Fuel Pressure › Diagnostic Connector - Fuel Pump › Component Information › Locations
  - Fuel Return Line › Component Information › Technical Service Bulletins › Fuel Line - O-Rings Composition2
  - Fuel Supply Line › Component Information › Technical Service Bulletins6 pages
    Recalls: › NHTSA85V034000
    All Technical Service Bulletins for Fuel Supply Line: › 896C22 3
    All Other Service Bulletins for Fuel Supply Line: › 896C22
  - Fuel Tank2 pages
    Fuel Gauge Sender › Component Information › Locations
    Fuel Tank Pressure Release Valve › Component Information › Description and Operation
  - Idle Speed/Throttle Actuator - Electronic › Component Information › Locations
  - Idle Speed/Throttle Actuator - Mechanical › Idle Speed Vacuum Solenoid Valve › Component Information › Locations
  - Idle Up Control Valve › Idle Up Control Relay › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Idle Up Control Relay: › 846E35
    All Technical Service Bulletins for Idle Up Control Relay: › 846E35
  - Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications2
  - Relays and Modules - Fuel Delivery and Air Induction6 pages
    Choke Relay › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Choke Relay: › 856C17
    All Technical Service Bulletins for Choke Relay: › 856C17
    Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications2
    Idle Up Control Relay › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Idle Up Control Relay: › 846E35
    All Technical Service Bulletins for Idle Up Control Relay: › 846E35
  - Secondary Throttle Valve › Component Information › Technical Service Bulletins › Carburetor Secondary Throttle Valve - Sealing Compound
  - Sensors and Switches - Fuel Delivery and Air Induction › Throttle Position Sensor › Component Information › Technical Service Bulletins › Engine Controls - TPS Specifications2
  - Throttle Position Sensor › Component Information › Technical Service Bulletins › Engine Controls - TPS Specifications2
- Ignition System55 pages
- Transmission Control Systems8 pages
  - Actuators and Solenoids - Transmission and Drivetrain › Actuators and Solenoids - A/T › Torque Converter Clutch Solenoid, A/T › Component Information › Technical Service Bulletins6 pages
    Customer Interest for Torque Converter Clutch Solenoid: › 8771256A2 3
    All Technical Service Bulletins for Torque Converter Clutch Solenoid: › 8771256A2 3
  - Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T › Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation › Park/Neutral Switch2
- PROM - Programmable Read Only Memory › Component Information50 pages
  - Technical Service Bulletins9 pages
    Customer Interest: › 866E212
    All Technical Service Bulletins: › 866E212
    All Other Service Bulletins for PROM - Programmable Read Only Memory: › 84712572 3 4 5
    All Other Service Bulletins for PROM - Programmable Read Only Memory: › 8471257
  - Application and ID31 pages
    Introducing the GM PROM Cross Reference Index2 3 4 5 6 7 8 9 10
    Expanded Footnotes › Footnotes 1 Thru 502 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
  - Description and Operation › CALPAK2 3 4 5
  - Service and Repair › CALPAK2 3 4 5
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