Cadillac Escalade 2006–2007 — technical service bulletin
Bulletin 4006 · NHTSA communication 10021023 · issued Feb 22, 2007
Technical service bulletin
communication type
Engine and Engine Cooling
component
2006–2007
model years
21
vehicle entries
Official summary
Whine howl noise from the rear differential on vehicles equipped with an 8.6 rear axle. *kb
Vehicles covered
- 2006 Cadillac Escalade
- 2007 Cadillac Escalade
- 2006 Chevrolet Avalanche 1500
- 2007 Chevrolet Avalanche 1500
- 2006 Chevrolet Avalanche 2500
- 2007 Chevrolet Avalanche 2500
- 2006 Chevrolet Silverado
- 2007 Chevrolet Silverado 1500
- 2007 Chevrolet Silverado 2500
- 2007 Chevrolet Silverado 3500
- 2006 Chevrolet Suburban 1500
- 2007 Chevrolet Suburban 1500
- 2006 Chevrolet Suburban 2500
- 2006 Chevrolet Tahoe
- 2007 Chevrolet Tahoe
- 2006 GMC Sierra
- 2007 GMC Sierra 1500
- 2007 GMC Sierra 2500
- 2007 GMC Sierra 3500
- 2006 GMC Yukon
- 2007 GMC Yukon
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.