OEM Chevrolet Astro Brake Caliper Bracket

Chevrolet Astro Brake Caliper Bracket Parts and Q&A

• Caliper Bracket
  18040090
  Q: How to replace the brake caliper bracket on the front on Chevrolet Astro?

  A:

  The best way to work on front brake caliper brackets includes using mechanic wire to stabilize the caliper while keeping the brake hose connected safely. Take off the caliper from the bracket baseplate before you disconnect the hose for installation. After removing the two mounting bolts from the Brake Caliper Bracket take out the bracket while cleaning its interior and underside areas. The new bracket needs to have all remaining adhesive patch removed while you clean bolt threads with denatured alcohol to apply threadlocker gm p/n 12345493 (Canadian P/N 10953488) properly. Secure the two caliper bracket mounting bolts into place at 175 nm (121 lb ft) torque value. Fit the Brake Pads starting with inner pad-1 and pad-2 wear indicators back in place, and slide them onto the rotor surface. First reattach both anti-rattle clips before proceeding. Set the brake caliper in place then put on the tire and wheel unit while lowering the vehicle. When the engine is off apply the brake pedal gently to around 2/3 of its range and ease up the pressure. Push the brake pedal once every 15 seconds to ensure brake caliper pistons and brake pads reach their final position.
• Caliper Bracket, Rear
  25997048
  Q: How to replace the rear brake caliper bracket on Chevrolet Astro?

  A:

  The Brake Caliper Bracket on the back brake needs heavy wire support to stay connected to the hydraulic hose during replacement. Detach the caliper from its mounting bracket but leave the hydraulic brake hose connected before dissembling the Brake Pads and anti-rattle clips from the Brake Caliper Bracket. Unthread the two bolts securing the Brake Caliper Bracket and take out the bracket. During this step clean both bracket ends inside and the threaded mounting surface. Reattach the Brake Caliper Bracket and secure it in place only after cleaning both threads and surfaces with denatured alcohol. Utilize threadlocker gm p/n 12345493 (10953488 in Canada) for this step. Insert the two mounting bolts on the Brake Caliper Bracket and tighten them to 148 lb ft. Replug the anti-rattle clips and brake pads afterward while letting the pads reach the rotor. Start with engine off and lower the vehicle. Then attach the brake caliper, the components, wheel, and tire. Use a slow pedal press up to two-thirds distance to reach proper piston placement. Repeat until you achieve consistent brake effort.