Chevrolet Avalanche 2007–2009 — technical service bulletin
Bulletin 09-04-21-003D · NHTSA communication 10037544 · issued Jan 1, 2011
Technical service bulletin
communication type
Power Train
component
2007–2009
model years
16
vehicle entries
Official summary
Gm: when stopping or accelerating there may be a clunk noise and its as if the vehicle is bumped from behind. This can be caused by a slip in the rear propshaft. *rm
Vehicles covered
- 2008 Chevrolet Avalanche
- 2009 Chevrolet Avalanche
- 2007 Chevrolet Silverado 1500
- 2008 Chevrolet Silverado 1500
- 2009 Chevrolet Silverado 1500
- 2008 Chevrolet Suburban
- 2009 Chevrolet Suburban
- 2008 Chevrolet Tahoe
- 2009 Chevrolet Tahoe
- 2007 GMC Sierra
- 2008 GMC Sierra
- 2009 GMC Sierra
- 2008 GMC Yukon
- 2009 GMC Yukon
- 2008 GMC Yukon XL 1500
- 2009 GMC Yukon XL 1500
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.