Tire - Chirp During Brake Application: Overview
90chevy28Number: 89-313-5
Section: 5
Date: July 1990
Corp. Bulletin No.: 065007R
Subject: RWAL BRAKE SENSITIVITY
Model and Year: 1988-89 C3/K3 TRUCKS
TO: ALL CHEVROLET DEALERS
THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 89-310-5, DATED JUNE 1990. SERVICE PART NUMBERS HAVE BEEN CORRECTED. DISCARD ALL COPIES OF 89-310-5.
Some owners of 1988-89 C3 and K3 models equipped with dual, rear wheels, may comment about a momentary rear tire "chirp" during brake application with the vehicle unloaded. A service procedure has been developed for this condition, consisting of replacing the rear wheel backing plate assemblies. The assemblies consist of the backing plates with all brake components mounted on them. With the replacement of the backing plates, the hub and drum assembly must also be replaced.