Chevrolet Silverado 2014–2018 — technical service bulletin
Bulletin PIT5521A · NHTSA communication 10157029 · issued Sep 25, 2017
Technical service bulletin
communication type
Electrical System
component
2014–2018
model years
22
vehicle entries
Official summary
This preliminary information communicates a Diagnostic Tip for a Service Trailer Brake Message with DTC C111B C1112 C1113 C1114 advising to address any battery issues first before any in depth diagnostics are done.
Vehicles covered
- 2017 Chevrolet Silverado
- 2014 Chevrolet Silverado 1500
- 2015 Chevrolet Silverado 2500
- 2016 Chevrolet Silverado 2500
- 2018 Chevrolet Silverado 2500
- 2015 Chevrolet Suburban
- 2016 Chevrolet Suburban
- 2017 Chevrolet Suburban
- 2018 Chevrolet Suburban
- 2015 Chevrolet Tahoe
- 2016 Chevrolet Tahoe
- 2017 Chevrolet Tahoe
- 2018 Chevrolet Tahoe
- 2017 GMC Sierra
- 2014 GMC Sierra 1500
- 2015 GMC Sierra 1500
- 2016 GMC Sierra 1500
- 2018 GMC Sierra 3500
- 2015 GMC Yukon
- 2016 GMC Yukon
- 2017 GMC Yukon
- 2018 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.