SUMMARY OF INFORMATION FROM MANUFACTURER:GMREVIEWED THE MATTER AND...HAS NOT IDENTIFIED A SAFETY-RELATED BRAKE CONDITION THAT REQUIRESFIELD CORRECTION.ANALYSIS:IT APPEARS THAT THE PARKING BRAKE ACTUATION SYSTEM OR THEPISTONS WITHIN THE CALIPER CAN SEIZE PROHIBITING REAR DISC BRAKE FUNC-TION.A SEIZED CALIPERS CAN RESULT IN UNEVEN BRAKE OPERATION (PULL)AND/OR TOTAL LOSS OF THE EMERGENCY BRAKE FUNCTION.STATUS:TEST REQUEST AT ETF AND NEAR COMPLETION.AWAITING GM RESPONSE TO JUNE 17, 1988 INFORMATION REQUEST.===