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 120 (HYDRAULIC BRAKE SYSTEM)REPAIR INSTRUCTIONSMASTER CYLINDER 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 2007 Buick LaCrosse and 2007 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Master Cylinder

Courtesy of GENERAL MOTORS CORP.

Bench bleed the master cylinder. Refer to Master Cylinder Bench Bleeding .
Install the master cylinder to the vacuum brake booster.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the master cylinder mounting nuts.
Tighten: Tighten the master cylinder mounting nuts to 33 N.m (24 lb ft).
Remove the plugs from the brake pipes
Connect the brake pipes to the master cylinder.
Tighten:
- With ABS tighten the brake pipe fittings at the master cylinder to 30 N.m (22 lb ft).
- Without ABS tighten the front brake fittings to 27 N.m (20 lb ft).
- Without ABS tighten the rear brake fittings to 25 N.m (18 lb ft).
Connect the electrical connector to the brake fluid level sensor.
Bleed the brake system. Refer to Hydraulic Brake System Bleeding (Manual) or Hydraulic Brake System Bleeding (Pressure) .

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.