2005 Buick Rendezvous Drivetrain – Boom or Drone Noise at 2100 RPM
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Subject: Boom or Drone Noise at 2100 rpm or About 120 km/h (75 mph) (Inspect and Clean Torque Tube Mount or Install Dampener/Mount Kit) Models: 2002-2004 Buick Rendezvous AWD 2005 Buick Rendezvous AWD (w/LA1 Only) 2002-2005 Chevrolet Venture AWD 2002-2003 Oldsmobile Silhouette AWD 2002-2005 Pontiac Aztek AWD, Montana AWD Supercede: This bulletin is being revised to add a corrective action, one illustration and warranty information. Please discard Corporate Bulletin Number 04-04-17-001A. (Section 04 – Driveline/Axle). Condition Some customers may comment on a noise or vibration that can be heard centered at or around 2100 RPM. This usually occurs at about 120 km/h (75 mph) in 4th gear, but the sound may be audible in all gears when at 2100 RPM. Cause The central torque tube mount, dampener and bushing may be allowing noise and/or engine vibration to transfer to the body at the mount point.
Correction # 1 ALWAYS inspect and if required perform Correction # 1 BEFORE going on to Correction # 2. Vehicles that have been operated on dirt roads or in loose dirt may experience a condition called “mud packing”. If a large quantity of dirt accumulates on the center torque-tube mount, noise and/or vibration may be transmitted to the passenger compartment. The illustration above highlights the areas of concern within the circles. Please inspect and thoroughly clean the areas indicated if required. If a quantity of dirt was found on the mount, please road test the vehicle and confirm that the boom or drone noise has been corrected. If the noise remains, continue with Correction # 2. Correction
Subject: Boom or Drone Noise at 2100 rpm or About 120 km/h (75 mph) (Inspect and Clean Torque Tube Mount or Install Dampener/Mount Kit) Models: 2002-2004 Buick Rendezvous AWD 2005 Buick Rendezvous AWD (w/LA1 Only) 2002-2005 Chevrolet Venture AWD 2002-2003 Oldsmobile Silhouette AWD 2002-2005 Pontiac Aztek AWD, Montana AWD Supercede: This bulletin is being revised to add a corrective action, one illustration and warranty information. Please discard Corporate Bulletin Number 04-04-17-001A. (Section 04 – Driveline/Axle). Condition Some customers may comment on a noise or vibration that can be heard centered at or around 2100 RPM. This usually occurs at about 120 km/h (75 mph) in 4th gear, but the sound may be audible in all gears when at 2100 RPM. Cause The central torque tube mount, dampener and bushing may be allowing noise and/or engine vibration to transfer to the body at the mount point.
Correction # 1 ALWAYS inspect and if required perform Correction # 1 BEFORE going on to Correction # 2. Vehicles that have been operated on dirt roads or in loose dirt may experience a condition called “mud packing”. If a large quantity of dirt accumulates on the center torque-tube mount, noise and/or vibration may be transmitted to the passenger compartment. The illustration above highlights the areas of concern within the circles. Please inspect and thoroughly clean the areas indicated if required. If a quantity of dirt was found on the mount, please road test the vehicle and confirm that the boom or drone noise has been corrected. If the noise remains, continue with Correction # 2. Correction
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