GM Releases Fix For Broken 2022 GMC Sierra 1500 Trailer Brake Function

General Motors has issued a Customer Satisfaction Program for certain 2022 GMC Sierra 1500 units due to a problem with the trailer brake.

Per Customer Satisfaction Program N242442100, select Sierra 1500’s equipped with the Integrated Trailer Brake (RPO code JL1) feature may have a condition where the trailer brake function is inoperative. To repair this issue, certified GM technicians have been instructed to inspect affected pickups and install a new integrated trailer brake control switch on the instrument panel, as well as reprogram the Instrument Panel Cluster (IPC) and Electronic Brake Control Module (EBCM).