OEM Chevrolet Uplander Brake Booster

Chevrolet Uplander Brake Booster Parts Questions & Experts Answers

• Brake Booster
  15234621
  Q: How to replace the power vacuum brake booster on Chevrolet Uplander?

  A: You must release fuel line pressure first with ch 48027 or do so without tools and drain the cooling system by using either static fill lz9 or vac-n-fill. Uninstall the coolant recovery reservoir on one side and both the pontiac/chevrolet left front cross brace and the ecm cover from the air cleaner assembly. Place the ecm to the side without unplugging its power cable and then extract the air filter assembly. Disconnect all fuel lines from their connections to pipes and vapor line before placing the heater hose back to its position on the coolant crossover pipe. To work on the brake pipes properly detach them from the shock tower line access and then disconnect the brake fluid level sensor switch and remove the Brake Lines and master cylinder. To begin detach the Brake Booster Vacuum Hose from the check valve then remove the brake pressure modulator valve (BPMV) assembly together with its bracket. First step to change the Brake Booster is taking out the knee bolster and Brake Booster push rod's mounting nuts while removing the Brake Booster push pin retaining clip and washer from the Brake Pedal assembly. Pull the engine forward to reach the Brake Booster and detach it from its position. Place the new booster at the mounting plate and cowl position and thread in the mounting nuts before tightening them to 18 lb ft (25 N.m). Fit the master cylinder and place the Brake Booster push rod into the Brake Pedal before putting the retaining clip and washer. Reposition the engine to reconnect the knee bolster after setting the Brake Pedal position sensor. Reattach the Brake Booster Vacuum Hose and put on the bpmv assembly together with its bracket. Then link the brake tubes to the master cylinder and put the fluid level sensor switch in place. Install all the fuel lines to the shock tower with the heater hose link to the coolant crossover pipe followed by the air filter system and components such as the ecm under its cover. At last replace the left front cross brace and coolant recovery reservoir then refill and bleed the cooling system before completing the hydraulic brake system.