Drivetrain - END OF INFORMATION NEED
ENGINEERING INFORMATIONBulletin No.: 08-04-20-004A
Date: January 28, 2009
Subject:
EI08246 - 11.5 Rear Axle Ring Gear Growl or Grind Noise Caused by Pinion Tail Bearing (Diagnose and Repair Using SI)
Models:
2008 Chevrolet Silverado 2500HD and 3500 Series Only
2008 GMC Sierra 2500HD and 3500 Series Only
with Allison(R) 1000 Transmission (RPO MW7) and 11.5 Rear Axle Ring Gear
Built AFTER January 1, 2008
Supercede:
This bulletin is being revised to end the need for information from the field. Please discard Corporate Bulletin Number 08-04-20-004 (Section 04 - Driveline/Axle).
This bulletin is being revised to end the need for dealer feedback. If you exhibit a vehicle with this concern, please diagnose and repair using the information found in SI.
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