Technical Service Bulletin PIT5509A — 2015 GMC SIERRA
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | PIT5509A |
| Manufacturer | |
| Vehicle | 2015 GMC SIERRA |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin 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 Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2015 GMC SIERRA
PIP5224D
EQUIPMENT:MECHANICAL
PIT5418A
EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
PIT5540
ELECTRICAL SYSTEM
PIP5224C
EQUIPMENT ADAPTIVE/MOBILITY
16-NA-035
SEATS
PI0951A
STRUCTURE
16-NA-014
POWER TRAIN
PIT-5449
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
PI-1522
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
SBU-15217
POWER TRAIN:AUTOMATIC TRANSMISSION