Chevrolet Express 2011–2012 — technical service bulletin
Bulletin 12050C · NHTSA communication 10089972 · issued May 1, 2015
Technical service bulletin
communication type
Suspension
component
2011–2012
model years
18
vehicle entries
Official summary
12050c - customer satisfaction program (revised expiration date, extended to 4/30/16). Certain 2011-2012 model year chevrolet express and gmc savana vehicles, and chevrolet silverado and suburban, and gmc sierra and yukon xl 2500 series vehicles, all equipped with a 10.5" rear axle, may have a condition in which the rear axle right-hand side bearing adjuster clip and bolt may come loose within the rear axle. If this occurs, a grinding noise and a vehicle vibration would be noticeable when the vehicle is in motion. If the adjustor or bolt punctures the differential cover pan, a fluid leak could
Vehicles covered
- 2011 Chevrolet Express
- 2012 Chevrolet Express
- 2011 Chevrolet Silverado 1500
- 2012 Chevrolet Silverado 1500
- 2011 Chevrolet Silverado 2500
- 2012 Chevrolet Silverado 2500
- 2011 Chevrolet Silverado 3500
- 2012 Chevrolet Silverado 3500
- 2011 GMC Savana
- 2012 GMC Savana
- 2011 GMC Sierra 1500
- 2012 GMC Sierra 1500
- 2011 GMC Sierra 2500
- 2012 GMC Sierra 2500
- 2011 GMC Sierra 3500
- 2012 GMC Sierra 3500
- 2011 GMC Yukon XL
- 2012 GMC Yukon XL
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.