Brakes - Rattle or Buzz From I/P During Braking
90pontiac04Bulletin Number: 90-5-7
Reference Number: 975002R
Publish Date: 2/90
Subject: RATTLE/BUZZ FROM I/P DURING BRAKE APPLY/RELEASE (NEW BOOSTER CHECK VALVE)
Models
Affected: 1987-90 GRAND AM, SUNBIRD AND 6000 MODELS
This bulletin cancels and replaces bulletin 89-5-6 issued 2/89. This bulletin has been revised to include all 1987-90 Grand Am, Sunbird and 6000 models and to correct the part number.
On some 1987-90 Grand Am, Sunbird and 6000 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.