Chevrolet Avalanche 1500 2012–2014 — technical service bulletin
Bulletin PI-1343-C · NHTSA communication 10078543 · issued Apr 22, 2016
Technical service bulletin
communication type
Equipment
component
2012–2014
model years
26
vehicle entries
Official summary
This preliminary information bulletin provides a procedure to reset the transmission adapts and test drive the vehicle to correct a customer concern on a harsh (detent) 6-4 downshift.
Vehicles covered
- 2012 Chevrolet Avalanche 1500
- 2013 Chevrolet Avalanche 1500
- 2012 Chevrolet Silverado 1500
- 2013 Chevrolet Silverado 1500
- 2014 Chevrolet Silverado 1500
- 2012 Chevrolet Suburban
- 2013 Chevrolet Suburban
- 2014 Chevrolet Suburban
- 2012 Chevrolet Tahoe
- 2013 Chevrolet Tahoe
- 2014 Chevrolet Tahoe
- 2012 GMC Sierra 1500
- 2013 GMC Sierra 1500
- 2014 GMC Sierra 1500
- 2014 GMC Sierra 2500
- 2012 GMC Yukon
- 2013 GMC Yukon
- 2014 GMC Yukon
- 2012 GMC Yukon Denali
- 2012 GMC Yukon Denali XL
- 2012 GMC Yukon Hybrid
- 2013 GMC Yukon Hybrid
- 2012 GMC Yukon XL
- 2013 GMC Yukon XL
- 2014 GMC Yukon XL
- 2012 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.