Chevrolet Colorado 2014–2020 — technical service bulletin
Bulletin PIT5509E · NHTSA communication 10167466 · issued Oct 28, 2019
Technical service bulletin
communication type
Electrical System
component
2014–2020
model years
44
vehicle entries
Official summary
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Ma
Vehicles covered
- 2015 Chevrolet Colorado
- 2016 Chevrolet Colorado
- 2017 Chevrolet Colorado
- 2018 Chevrolet Colorado
- 2019 Chevrolet Colorado
- 2020 Chevrolet Colorado
- 2017 Chevrolet Silverado
- 2014 Chevrolet Silverado 1500
- 2018 Chevrolet Silverado 1500
- 2015 Chevrolet Silverado 2500
- 2016 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 4500
- 2015 Chevrolet Suburban
- 2016 Chevrolet Suburban
- 2017 Chevrolet Suburban
- 2018 Chevrolet Suburban
- 2019 Chevrolet Suburban
- 2020 Chevrolet Suburban
- 2015 Chevrolet Tahoe
- 2016 Chevrolet Tahoe
- 2017 Chevrolet Tahoe
- 2018 Chevrolet Tahoe
- 2019 Chevrolet Tahoe
- 2020 Chevrolet Tahoe
- 2015 GMC Canyon
- 2016 GMC Canyon
- 2017 GMC Canyon
- 2018 GMC Canyon
- 2019 GMC Canyon
- 2020 GMC Canyon
- 2017 GMC Sierra
- 2014 GMC Sierra 1500
- 2018 GMC Sierra 1500
- 2015 GMC Sierra 2500
- 2016 GMC Sierra 2500
- 2019 GMC Sierra 2500
- 2019 GMC Sierra Denali
- 2015 GMC Yukon Denali
- 2016 GMC Yukon Denali
- 2017 GMC Yukon Denali
- 2018 GMC Yukon Denali
- 2019 GMC Yukon Denali
- 2020 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.