Fuel System - Whistle Noise on Light Acceleration
Bulletin No.: 05-06-04-002Date: January 06, 2005
TECHNICAL
Subject:
Whistle Noise on Light Acceleration (Replace Throttle Body)
Models:
2002-2005 Buick Rendezvous
2002-2005 Chevrolet Impala, Monte Carlo, Venture
2002-2004 Oldsmobile Alero, Silhouette
2002-2005 Pontiac Aztek, Grand Am, Montana
with 3.4L V6 Engine (VIN E - RPO LA1)
Condition
Some owners may comment on a whistle type noise on light acceleration.
Cause
Casting porosity in the throttle body may be creating the whistle noise.
Correction
Replace the throttle body and, if necessary, throttle body gasket. Refer to the Engine Controls sub-section of Engines in the appropriate Service Manual. The throttle body gasket should be inspected and re-used if not damaged.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer