Cars & Vehicles Auto Parts & Maintenance & Repairs

How to Test a Brake Booster on a 1988 GMC

    • 1). Sit behind the steering wheel of your GMC vehicle and pump the brake pedal 10 times. This will release any vacuum stored in the brake booster.

    • 2). Shift the transmission to neutral (manual transmission) or park (automatic transmission).

    • 3). Rest your right foot slightly on the brake pedal without pushing down.

    • 4). Start the engine and pay attention to the brake pedal. If the vacuum is entering the booster chamber properly, you will feel a slight downshift movement on the brake pedal as the engine is starting. Turn off the engine. Go to the next step to do an inspection, if necessary.

    • 5). Open the hood and check the vacuum hose connected to the brake booster. The booster is the drum-like component mounted on the firewall, right in front of the driver. Look for cracks, hard or swollen spots and obstructions. And check for a good connection on the booster and engine side of the hose. Replace it, if necessary.

    • 6). Take your vehicle to a service shop for further inspection if your booster failed the test in Step 4 and the vacuum hose and connectors are in good condition.

Related posts "Cars & Vehicles : Auto Parts & Maintenance & Repairs"

1990 Sierra Clutch Problems

Maintenance

How to Replace a Ford Ignition Coil Pack

Maintenance

How to Choose an Auto Body Shop

Maintenance

How to Replace a Battery Box

Maintenance

Questions and Concerns When Starting a Mobile Auto Detailing Business

Maintenance

How to Remove the Slide End Cap From a Walther P99 QA

Maintenance

Car Windows Alternative Coast Corona

Maintenance

How to Set the Timing on Shovelhead Points

Maintenance

Is Damage to the Inside of My Car Covered by Insurance?

Maintenance

Leave a Comment