NHTSA ID Number: 10224300 Manufacturer Communication Number: PIT5948 Summary This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC. When checking for DTC’s a C159C sym49 maybe set for the Trailer Brake Control Switch. GM Engineering is aware of the issue and working on a … Read more
NHTSA ID Number: 10075754 Manufacturer Communication Number: PIT5490 Summary Service Trailer Brake message in the DIC. DTC’s, U0415 “Invalid Data Received From Electronic Brake Control Module” may be set in the Chassis Control Module. This message occurs during hard braking, acceleration and/or turns. This could be caused by the brake fluid level near the minimum level. … Read more
NHTSA ID Number: 10178359 Manufacturer Communication Number: PIT5311F Summary This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have an intermittent “Check Trailer Wiring” or “Service Trailer Brake” message on the Driver Information Center. Technician will inspect and clean the ground wire (normally white wire) connection … Read more