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 683 (ENGINE MECHANICAL - 3.1L)REPAIR INSTRUCTIONSOFF-VEHICLE REPAIR INSTRUCTIONSENGINE FRONT COVER INSTALLATION

1999 GMC Forward Control 5.7 R, Automatic

Engine Front Cover Installation

1999 GMC Forward Control 5.7 R, AutomaticSECTION Engine Front Cover Installation

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Install the engine front cover gasket.
Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or equivalent to both sides of the lower tabs of the engine front cover gasket.

Fig 1: Installing Engine Front Cover Gasket
Courtesy of GENERAL MOTORS CORP.
Install the engine front cover.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the engine front cover bolts (3).
Tighten

Tighten the engine front cover bolts (3) to 55 N.m (41 lb ft).
Install the engine front cover bolts (1).
Tighten

Tighten the engine front cover bolts (1) to 55 N.m (41 lb ft).
Install the engine front cover bolts (2).
Tighten

Tighten the engine front cover bolts (2) to 27 N.m (20 lb ft).

Fig 2: Installing Engine Front Cover
Courtesy of GENERAL MOTORS CORP.
Install the crankshaft position sensor wiring bracket.
Install the crankshaft position sensor wiring bracket bolt.
Tighten

Tighten the crankshaft position sensor wiring bracket bolt to 27 N.m (20 lb ft).

Fig 3: Installing Crankshaft Position Sensor Wiring Bracket
Courtesy of GENERAL MOTORS CORP.

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.