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 407 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)REPAIR INSTRUCTIONSBATTERY REPLACEMENT (LS4)INSTALLATION 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 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Battery Retainer & Bolts

Courtesy of GENERAL MOTORS CORP.

With the aid of an assistant, install the battery.
Install the underhood accessory wiring junction block. Refer to Underhood Electrical Center or Junction Block Replacement .

NOTE: Refer to Fastener Notice .

Install the battery retainer (2) and bolts (1).
Tighten: Tighten the bolts to 18 N.m (13 lb ft).

Fig 2: Identifying Negative Battery Cable Terminal & Battery

Courtesy of GENERAL MOTORS CORP.

Install the positive battery cable terminal to the battery.
Tighten the positive battery cable terminal nut.
Tighten: Tighten the nut to 15 N.m (11 lb ft).
Position the positive battery cable terminal cover (2).
Install the right front diagonal brace. Refer to Front Fender Upper Diagonal Brace Replacement .
Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (L26) or Battery Negative Cable Disconnection and Connection (LY7) or Battery Negative Cable Disconnection and Connection (LS4) .

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.