Instrument Panel - Rattle or Buzz on Driver's Side
90chevy18Number: 90-176-5
Section: 5
Date: February 1990
Corp. Bulletin No.: 975002
Subject: RATTLE/BUZZ FROM INSTRUMENT PANEL DURING BRAKE APPLY/RELEASE
Model and Year: 1987-90 A, J CAR
THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 89-83-5, DATED FEBRUARY 1989. THE 1990 MODEL YEAR HAS BEEN ADDED AND THE PART NUMBER CORRECTED. ALL COPIES OF 89-83-5 SHOULD BE DISCARDED.
On some 1987-90 "J" and "A" models, customers may comment on a rattle or buzz type noise that seems to come from the instrument panel area in front of the driver. The noise is most likely to occur during brake apply or release, during low speed or parking lot maneuvers.
To repair this condition, install a new brake booster check valve, P/N 18012017.
Parts are currently available from GMSPO.