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 (3.8L VIN K & 1 - REGAL)
1999 GMC Forward Control 5.7 R, Automatic
Component Locations (3.8L VIN K & 1 - Regal)
1999 GMC Forward Control 5.7 R, AutomaticSECTION Component Locations (3.8L VIN K & 1 - Regal)
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 (3.8L VIN K & 1 - REGAL)
| Component | Location |
|---|---|
| A/C Refrigerant Pressure Sensor | Left Side Of Engine Compartment, On Liquid Line, Forward of Strut Tower |
| Camshaft Position Sensor | Right Side Of Engine, Above Crankshaft Pulley |
| Crankshaft Position Sensor | Right Front Of Engine, Behind Harmonic Balancer |
| Cruise Control Module | Left Side Of Engine Compartment, Mounted On Strut Tower |
| Data Link Connector | Under Left Side Of Instrument Panel, Right Of Steering Column |
| EGR Valve | Left Rear Top Of Engine |
| Electronic Brake Traction Control Module | Left Rear Of Engine Compartment, On Left Strut Tower |
| Engine Coolant Temperature Sensor | Left Side Of Engine, Below Thermostat Outlet |
| Engine Oil Level Switch | Front Of Engine, In Center Of Oil Pan |
| Engine Oil Pressure Switch | Lower Right Rear Of Engine, Above Transaxle |
| EVAP Canister Purge Solenoid (VIN K) | Top Of Engine, Near Center Of Valve Cover |
| EVAP Canister Purge Solenoid (VIN 1) | Rear Top of Engine, Near Center Of Valve Cover |
| EVAP Canister Vent Solenoid | Behind Left Side Of Rear Fascia Splash Shield In Wheelwell |
| Fuel Injectors | In Intake Manifold |
| Fuse Block | Right Side Of Instrument Panel, In Door Opening |
| Idle Air Control Valve | Top Of Engine, Top Front Of Throttle Body |
| Ignition Control Module | Top Right Front Of Engine |
| Intake Air Temperature Sensor | Left Front Of Engine Compartment, In Air Intake Duct |
| Knock Sensor (Bank No, 1) | On Front Of Engine, Above Starter |
| Knock Sensor (Bank No. 2) | On Rear Of Engine, Below Exhaust Manifold |
| Manifold Absolute Pressure Sensor (VIN K) | Top Of Engine, Right of Upper Intake Plenum |
| Mass Airflow Sensor | Left Front Of Engine, Part Of Throttle Body Assembly |
| Post-Converter Oxygen Sensor | Rear Of Catalytic Converter |
| Powertrain Control Module | Front Left Side Of Engine, Inside Air Cleaner Assembly |
| Pre-Converter Oxygen Sensor | Rear Of Engine, In Exhaust Manifold |
| Supercharger Boost Control Solenoid | Top Left Of Engine, Above Valve Cover |
| Supercharger Bypass Valve Acuator | On Front Top Of Engine, Left Of TPS |
| Throttle Position Sensor | Top Of Engine, On Throttle Body |
| Transaxle Range Switch | Left Of Engine, On Transaxle |
| Underhood Junction Block | Right Side Of Engine Compartment, Mounted To Strut Tower |
| Vehicle Speed Sensor | Behind Engine, On Top Right End Of Automatic 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.