OEM Buick Terraza Brake Booster

Buick Terraza Brake Booster Parts and Q&A

• Brake Booster
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  Q: How to replace the vacuum brake booster on Buick Terraza?

  A:

  Before replacing the vacuum Brake Booster start by reducing fuel line pressure and draining the cooling system. Take the Coolant Reservoir left front cross brace and powertrain control module (PCM) cover off from their position on the air cleaner housing. Without disconnecting its power source put the pcm aside and take out the air cleaner and duct together. Disconnect both fuel lines from the pipes and vapor line before moving the heater hose off the crossover pipe. You can access the brake pipes better by unclipping the fuel lines from their shock tower position before disconnecting the brake fluid level sensor switch from the master cylinder and taking out both lines plus the master cylinder. Pull out the abs module and bracket from their position while disconnecting the Brake Booster Vacuum Hose from the vacuum Brake Booster check valve and setting it aside. Remove the knee bolster first. Then detach and pull out the Brake Booster push pin clip along with washer from the Brake Pedal assembly. Complete the process by removing the push rod from the booster. Move the engine forward by disengaging its front Engine Mounts and Brake Booster mounting nuts to reach and remove the Brake Booster. Locate the Brake Booster on top of the cowl and mounting plate before tightening its nuts to 25 nm (18 ft. Lbs.). Place the master cylinder into position and insert the Brake Booster push rod into the Brake Pedal. Attach it with the washer and retaining clip. Set up the Brake Pedal sensor after adjusting the stoplamp connector for correct operation and fix the knee bolster. Put the engine back in its original place and bolt on the engine mounts including their nuts. Put back the Brake Booster Vacuum Hose to its valve before installing the abs unit holder and hardware while placing the Brake Lines into the master cylinder. Fasten the master cylinder fluid level sensor before positioning the fuel pipes for the shock tower and linking the heater hose to the coolant crossover pipe. Place the air cleaner and duct back into the engine bay while installing both the pcm and its cover. After that put in the left front cross brace and Coolant Reservoir. Complete the fluid procedures by filling the cooling system and pumping out air from the brake lines.