Limited 2016 silverado trailer wiring diagram - Up to date tbcm calibrations have been released in tis2web to improve tbcm diagnostics for a high resistant quick to voltage concern. The tech 2 can be used to screen the "tbcm relay feedback sign" parameter positioned beneath chassis/trailer brake manipulate module/information display to assist decide if there may be a brief to voltage. The regular voltage studying is among 3.2-four.1 volts. Some owners may additionally remark of a service trailer brake gadget message displayed on the dic. While checking for dtc's, c1112 or c1114 can be set inside the trailer brake manage module (tbcm). This difficulty may additionally arise without or with a trailer connected to the car.
Gm is receiving some of lower back trailer brake manage modules (tbcm) and trailer brake relays which might be absolutely purposeful. The tbcm monitors the voltage of the electric brake wire (dark blue circuit 47) that runs from the trailer brake relay to the 7-pin trailer connector in the bumper. If the voltage in this twine is shorted lower or better than the designed output voltage of the relay the tbcm will set a dtc. Look into wiring for shorts among trailer brake (electric powered brake) cord (blue) and any/all of the following trailer wires: right flip/brake, left flip/brake, going for walks lighting, lower back up, battery, floor. Please word that even warmness reduced in size splices aren't always water tight.
? if the voltage is better, the updated calibration will assist. Reprogram the tbcm with the ultra-modern cals in tis2web.?? if the voltage is lower, then the up to date calibration should nevertheless be established, however extra diagnostics can be had to correct the concern. Please follow the beneath information and appropriate si diagnostics for extra help. Please look into all wiring between the trailer brake relay and the 7-pin trailer connector (consisting of any fifth wheel jumpers/connectors) for damaged wiring/connectors (nicks, cuts, corrosion, pin harm, and many others.) And bad first-class or non-sealed splices. Even a small quantity of water intrusion can wick its way to both the trailer brake relay and the 7-pin trailer connector within the bumper, probably inflicting intermittent dtcs.