Colorado 2WD L4-2.8L VIN 8 (2004)
5. If the brake drum cannot be removed, perform the following.
5.1.
Remove the rubber plug from the backing plate.
5.2.
Insert a screwdriver, until contact has been made with the adjuster lever.
5.3.
Slightly push the adjuster actuator lever away from the adjuster.
5.4.
Using a second screwdriver, rotate the adjuster in an upward motion, until the adjuster is seated.
5.5.
Remove the brake drum.
6. Using the J 42450-A, clean the mating surface between the rear axle flange and the brake drum.
Installation Procedure
1. Using the J22364-01, measure the brake drum.