Chevrolet Silverado 2014–2017 — technical service bulletin
Bulletin PIT5509A · NHTSA communication 10113352 · issued Jan 26, 2017
Technical service bulletin
communication type
Electrical System
component
2014–2017
model years
19
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 Silverado
- 2016 Chevrolet Silverado
- 2017 Chevrolet Silverado
- 2014 Chevrolet Silverado 1500
- 2015 Chevrolet Suburban
- 2016 Chevrolet Suburban
- 2017 Chevrolet Suburban
- 2015 Chevrolet Tahoe
- 2016 Chevrolet Tahoe
- 2015 GMC Sierra
- 2016 GMC Sierra
- 2017 GMC Sierra
- 2014 GMC Sierra 1500
- 2015 GMC Yukon
- 2016 GMC Yukon
- 2017 GMC Yukon
- 2015 GMC Yukon XL
- 2016 GMC Yukon XL
- 2017 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.