Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 98 (ENGINE CONTROL SYSTEM TESTING & ENGINE COMPONENT TESTING)COMPONENT LOCATIONSCOMPONENT LOCATIONS (2.2L VIN F - ALERO & GRAND AM)
1999 GMC Forward Control 5.7 R, Automatic
Component Locations (2.2L VIN F - ALERO & Grand Am)
1999 GMC Forward Control 5.7 R, AutomaticSECTION Component Locations (2.2L VIN F - ALERO & Grand Am)
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn SL2, 2002 Saturn SL1, 2002 Saturn SL, 2002 Saturn SC2, and 2002 Saturn SC1. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT LOCATIONS (2.2L VIN F - ALERO & GRAND AM)
| Component | Location |
|---|---|
| A/C Compressor Clutch Relay | Left Side Of Engine Compartment, In Underhood Junction Block |
| A/C Refrigerant Pressure Sensor | Front Of Engine Compartment |
| Camshaft Position Sensor | Top Rear Of Engine |
| Cooling Fan Control Relays No. 1 & 2 | Left Side Of Engine Compartment, In Underhood Junction Block |
| Crankshaft Position Sensor | Lower Left Side Of Engine, Near Oil Filter |
| Cruise Control Module | Right Side Of Engine Compartment |
| Data Link Connector | Lower Left Side Of Instrument Panel |
| Engine Coolant Level Switch | Right Side Of Engine Compartment |
| Engine Coolant Temperature Sensor | Top Rear Of Engine |
| Engine Oil Pressure Sensor | Top Left Of Engine |
| EVAP Canister Purge Solenoid | Lower Front Of Engine |
| EVAP Canister Vent Solenoid | Under Rear Of Vehicle |
| Fuel Injectors | Top Front Of Engine, On Fuel Rail |
| Fuel Pump Relay | Left Side Of Engine Compartment, In Underhood Junction Block |
| Fuel Tank Pressure Sensor | Under Rear Of Vehicle |
| Idle Air Control Valve | Top Front Of Engine |
| Ignition Control Module | Top Left Of Engine |
| Intake Air Temperature Sensor | Top Left Side Of Engine Compartment |
| Knock Sensor | Top Left Of Engine Of Engine |
| Left Instrument Panel Junction Block | Left Side Of Instrument Panel |
| Manifold Absolute Pressure Sensor | Top Front Of Engine |
| Post-Converter Oxygen Sensor | Rear Of Catalytic Converter |
| Powertrain Control Module | Below Left Side Of Instrument Panel, Near Steering Column |
| Pre-Converter Oxygen Sensor | In Exhaust Manifold |
| Right Instrument Panel Junction Block | Right Side Of Instrument Panel |
| Throttle Position Sensor | On Throttle Body Assembly |
| Transaxle Range Switch | Left Side Of Engine Compartment, On Top Of Transaxle |
| Underhood Junction Block | Left Side Of Engine Compartment |
| Vehicle Speed Sensor | Rear Of Engine/Transaxle |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.