Vehicle Involved: 1999-2001 Chevrolet S-10, Chevrolet Blazer, GMC

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Bulletin CQB 04-13 Subject: Difficult Rear Brake Rotor Removal S-10. Vehicle Involved: 1999-2001 Chevrolet S-10, Chevrolet Blazer, GMC Sonoma, GMC Jimmy and GMC Envoy Condition: Removing the rear brake rotor from any of the above listed vehicles may be difficult, and result in damage to the parking brake assembly. Here are two known causes for difficult removal: Repair Procedure: First, when lifting the vehicle with a frame type lift, the rear axle assembly is typically unsupported.

This condition may actually slightly stretch the parking brake cable and apply the parking brake enough to make rotor removal very hard. The solution may be to simply remove the cable stress by carefully supporting the rear axle with a jack stand. Then remove the rear rotor.

Second, the rust ridge that eventually forms on the inside edge of the drum section of the rotor, may cause interference. There is no provision to adjust the parking brake through the backing plate. So, drive one of the wheel retention studs out the back of the rotor.

Now rotate the rotor to align the stud hole with the parking brake adjuster. Use a long screwdriver to back off the parking brake shoes.

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