Q: How to replace the vacuum brake booster on 2003 Chevrolet Venture?
A: To replace the vacuum Brake Booster, one should relieve the fuel line pressure and the cooling system, veave the Coolant Reservoir, Cruise Control Module, and cruise control bracket and keep them aside. Next, after removing left front cross brace as well as powertrain control module (PCM) cover from the air cleaner housing and then remove the pcm without disconnecting electrical. Remove the air cleaner and duct, separate the fuel lines from the pipes, and the vapor line, and place the heater hose from the coolant x-over pipe. Winslows. Unclip the fuel lines that are part of the shock tower to have a better access to the brake pipes. Remove the fluid level sensor switch from the Brake Master Cylinder, thereafter the brake lines from the master cylinder and the master cylinder. Unclip the wire harness from antilock brake system (ABS) module bracket then disconnect the electrical connection at the abs module and brake lines from the abs module and also from the abs module with its bracket. Pull off the vacuum hose from the vacuum check valve and move it then remove the knee bolster from the car. Then, remove the Brake Booster push pin retaining clip and washer, followed by Brake Booster push rod from the Brake Pedal. The Brake Booster mounting nuts should be removed and then 2 front engine mounts, nuts and bolts should be removed rotatying the engine forward to remove the Brake Booster. To install, align the Brake Booster with the cowl and mounting plate and tighten the Brake Booster mounting with nuts to 25 nm (18 ft. Lbs.). Mount master cylinder, fix Brake Booster push rod to Brake Pedal through washer and retaining clip. Fix the stop lamp switch to allow proper work and install knee bolster. Return the engine, rotate the engine and get the engine mounts, bolts, and nuts in position. Connect the vacuum hose to the check valve then install the abs module bracket and module, the Brake Line connects to the module, the electrical connector to the abs module, and clip the electrical harness to the bracket. Install the Brake Master Cylinder and then attach brake lines, and then attach fluid level sensor switch where the master cylinder is located. Reinstall the fuel lines to the pipes and vapor line then heater crossover pipe air cleaner and duct assembly, pcm, and pcm cover. Lastly, replace the left front cross brace, cruise control bracket, and Cruise Control Module and then replace the Coolant Reservoir, fill, and top up the cooling system and bleed off the brake system.