Subject: | Whistle Noise While Vehicle Is Stationary with Brakes Applied (Replace Vacuum Brake Booster Check Valve) |
Models: | 2004 Pontiac GTO |
Some customers may comment on a light, barely audible whistle noise while their vehicle is stationary, with the brakes applied. This noise will disappear when the brakes are released.
Install a new vacuum brake booster check valve. Refer to Vacuum Brake Booster Check Valve and/or Hose Replacement (SI Document ID #1367021).
The new valve (1) can be easily identified from the old valve (2) by the black cover.
Part Number | Description | Qty |
---|---|---|
92148176 | P/B Booster Valve | 1 |
Parts are currently available from GMSPO.
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
---|---|---|
H1240 | Valve, Filter, Hose and/or Pipe, Vacuum Power Brake - Replace | Use Published Labor Operation Time |