REAR BRAKES FREEZE-UP INSTALL NEW BRAKE SHOES

SUBJECT: REAR BRAKE FREEZE-UP (INSTALL NEW BRAKE SHOES)

MODELS AFFECTED: 1992-93 TRANS SPORT MODELS

CONDITION:

--------- The ABS light may come on and one or both of the rear wheels will not turn after being parked during cold weather.

CAUSE:

----- When the rear brake shoes are damp and the temperature is 32 degrees F or lower, the rear brake shoes may temporarily freeze to the brake drums. This condition may be the result of moisture intrusion from a car wash, freezing rain, or heavy slush, and then parking the vehicle before the brakes have dried out.

CORRECTION:

---------- Replace the rear brake shoes with the P/N listed below. The new shoes have a lower metallic content and will more easily free up from the brake drum.

92 VEHICLES ONLY:

Seal the hole where the park brake cable goes through the backing plate with GM RTV sealant P/N 12345739 or equivalent. (1993 vehicles have a grommet around the cable.)

NOTE: These pads should only be used for customers who periodically experience this rear brake freeze-up. DO NOT USE AS A GENERAL REPLACEMENT PART.

Clear any stored ABS codes using a TECH 1. Codes set with the condition are 23, 24 and/or 31.

PARTS:

----- Brake Shoes: GMSPO - #12510017 AC-Delco - #18019286 GM Canada - #18019287

Sealant: GMSPO - #12345739

Part Availability:

Parts are currently available from GMSPO.

WARRANTY INFORMATION:

Labor Operation: T1857 Labor Time: 1.2 Hr.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.