Transfer Case Identification First Design vs. Second Design
Chevrolet technical service bulletin 120421001B for 2007-2013 Chevrolet Silverado 1500, 2007-2013 Chevrolet Tahoe and 2007-2010, 2012-2013 GMC Sierra 1500 and others.
- Bulletin number
- 120421001B
- Component
- Structure
- Summary
- Transfer Case Identification First Design vs. Second Design
Owners of these vehicles have filed 1,919 complaints in the body category.
Vehicles covered
- Chevrolet Silverado 1500 2007-2013 2007200820092010201120122013
- Chevrolet Tahoe 2007-2013 2007200820092010201120122013
- GMC Sierra 1500 2007-2010, 2012-2013 200720082009201020122013
- Chevrolet Suburban 2007-2013 2007200820092010201120122013
- GMC Yukon 2007-2013 2007200820092010201120122013
- Chevrolet Avalanche 2007-2013 2007200820092010201120122013
- GMC Sierra 2500 2013 2013
- Cadillac Escalade 2007-2013 2007200820092010201120122013
- GMC Yukon Denali 2007-2013 2007200820092010201120122013
- GMC Sierra 3500 2011, 2013 20112013
- GMC Sierra Denali 2013 2013
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