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 MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 343 (FRAME AND UNDERBODY)REPAIR INSTRUCTIONSTRANSMISSION SUPPORT REPLACEMENTINSTALLATION PROCEDURE

2008 Pontiac Grand Prix Base

Installation Procedure

2008 Pontiac Grand Prix BaseSECTION Installation Procedure

WARNING: This page is about a different car, the 2008 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transmission Support Components

Courtesy of GENERAL MOTORS CORP.

Install the transaxle support (8) to the front suspension crossmember.
Install the front transmission mount (9), if removed.
Install the front suspension dampener (4), if removed, 2WD models only.
Install the transaxle support (8) to the vehicle.

NOTE: Refer to Fastener Notice .

Install the rear transmission mount nut (5) to the transaxle support (8).
Tighten: Tighten the rear transaxle mount nut to 52 N.m (38 lb ft).
Install the front bolts (7) to the transaxle support (8).
Tighten: Tighten the front bolts to 39 N.m (29 lb ft).
Install the rear bolts (6) to the transaxle support (8).
Tighten: Tighten the rear bolts to 52 N.m (38 lb ft).
Install the bolt (3) and nut (1), to the front transmission mount (9) and bracket (2).
Tighten: Tighten the nut and bolt to 52 N.m (38 lb ft).
Install the engine splash shields. Refer to Engine Splash Shield Replacement - Left Side and Engine Splash Shield Replacement - Right Side .
Install the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
Lower the vehicle.
Remove the engine support fixture. Refer to Engine Support Fixture .

RENDER: 1.0x

NO RELATED

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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.