C 3500 HD Truck 2WD V8-8.1L VIN G (2002)
7. Measure caliper to mounting bracket by performing the following steps.
7.1. Insert a screw driver into the center of the key bumper gap (1).
7.2. Pry the screw driver firmly into the center of the key bumper gap to ensure that the caliper is sitting at the surfaces.
7.3. Measure the bumper gap with the largest feeler gauge that will fit into the gap on either side of the screw driver.
7.4. Select a shim based on the bumper gap measurement.
8. Install a caliper shim by performing the following steps:
8.1. Remove the caliper from the mounting bracket and support the caliper with heavy mechanic's wire or equivalent. DO NOT disconnect the
hydraulic brake hose from the caliper.
8.2. Install the shim on the mounting bracket V-way opposite from the key and the spring V-way.
8.3. Install the caliper using a new support key and spring.
9. Remeasure the bumper gap. If the gap exceeds 1.50 mm (0.058 inch). Install a thicker shim.
