OEM GMC Savana 1500 Brake Disc

GMC Savana 1500 Brake Disc Parts and Q&A

• Brake Rotor
  25757802
  Q: How to replace the rear brake disc on JH5 and JH6 on GMC Savana 1500?

  A:

  Start your work by releasing the parking brake and securely lifting the vehicle before replacing the rear Brake Disc on models jh5 and jh6. Take off the tire and wheel unit before placing markers on the disc to show its position in relation to the hub. Push the brake caliper down with a c-clamp to inspire the pistons to return and permit you to unfasten the caliper. Mount heavy mechanic wire under the brake caliper to shield the hydraulic hose system from harm. Take off the brake caliper unit along with its bracket keeping the hose attached. When possible, remove the disc retaining pushnuts. In case you need more assistance, strike the disc gently against the hub with a deadblow hammer. When the disc proves hard to take out use j46277 disc removal tool together with j-2619-01 slide hammer and adapter to help the process. Check the park brake components for damage and replace affected parts. Clean both surfaces between the hub/axle flange and disc using wheel hub and disc resurfacing kits j-42450-a and j-41013. Install the disc inside the correct position and return both caliper pieces to their original location. Clean and apply threadlocker product gm p/n 12345493 (Canada 10953488) over the caliper bracket bolts before installation and tighten them to 200 nm torque. After the wheel and tire are back in place use the brake pedal carefully to push and release while no engine power is running to place the brake caliper pistons. Put new brake fluid into the master cylinder reservoir and enable pad and disc contact with a burnishing process when replacing or resurfacing the disc.
• Rotor, Front
  19210603
  Q: How to replace the front brake disc on GMC Savana 1500?

  A:

  Vehicle service begins with vehicle lift and support followed by tire and wheel removal to access the front Brake Disc component. One must insert a drift or large screwdriver into the brake caliper to lock the disc from rotation before marking the hub extension alignment while removing front hub extension bolts from dual wheel vehicles. You can use a rubber mallet to lightly tap the hub extension's surrounding area. Start by placing a c-clamp on top of the brake caliper to push pistons toward the caliper bores then take out the caliper by securing it with heavy mechanic wire to protect the brake hose. Apply penetrating oil to rusted disc surfaces before using two m10 x 1.5 bolts to push the disc off the hub when push nuts are not present. Use (J 42450-A) to clear all rust and contaminants from hub flanges while (J 41013) should be used inside Brake Disc dimensions. Clean both mating surfaces before installing the disc in its original position. Measure the lateral runout of the assembled Brake Disc after installation. Use the specified procedure to address any dimensional deviations that exceed recommended values. After cleaning bolt threads, apply threadlocker gm p/n 12345493 to caliper bracket mounting bolts then tighten them up to 175 nm (129 lb ft) for jh5 or 300 nm (221 lb ft) for jh6 and jh7. The front wheel hub extension for dual wheel vehicles requires installation at its original position which should be followed by tightening the nuts to 130 nm (96 lb ft). Follow these steps: reinstall the tire and wheel assembly, lower the vehicle and proceed without starting the engine then gently depress the brake pedal up to 2/3 of its length before gently releasing it. Provide a firm pedal response by repeating the procedure and achieve it through the master cylinder reservoir with clean brake fluid at proper levels.