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 249 (ENGINE CONTROLS - REMOVAL & INSTALLATION)AIR INDUCTION SYSTEMSSUPERCHARGERINSTALLATION
1999 GMC Forward Control 5.7 R, Automatic
Air Induction Systems: Supercharger: Installation
1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation
WARNING: This page is about a different car, the 2003 Pontiac Bonneville, 2003 Buick Park Avenue, and 2003 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
- Install the supercharger gasket and supercharger.
- Install the spacers, bolts, and stud to the supercharger in the proper locations. Tighten the stud/bolts to specification, see TORQUE SPECIFICATIONS .
- Install the throttle body and gasket.
- Install the throttle body nuts. Tighten the throttle body nuts to specification, TORQUE SPECIFICATIONS .
- Install the engine wiring harness heat shield.
- Install the engine wiring harness heat shield bolt and nut. Tighten the engine wiring harness heat shield bolt and nut to specification, TORQUE SPECIFICATIONS .
- Install the MAP sensor bracket.
- Install the MAP sensor bracket bolts. Tighten the MAP sensor bracket bolts to specification.
- Install the vacuum block. Install the vacuum block bolts.
- Tighten the vacuum block bolts to specification, TORQUE SPECIFICATIONS .
- Install the boost solenoid. Install the boost solenoid bolts.
- Tighten the boost solenoid bolts to specification, TORQUE SPECIFICATIONS .
- Install the regulator valve and harness bolt.
- Install the booster bypass. Install the booster bypass nut.
- Tighten the booster bypass nut to specification, TORQUE SPECIFICATIONS .
- Install the fuel rail. Install the vacuum line to the fuel rail.
- Install the fuel rail nuts and stud.
- Tighten the fuel rail nuts and stud to specification, TORQUE SPECIFICATIONS .
- Install the spark plug wires.
RENDER: 1.0x
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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.