Where do you set the brake on a service trailer?

Some owners may comment of a Service Trailer Brake System message displayed on the DIC. When checking for DTC’s, C1112 or C1114 will be set in the Trailer Brake Control Module (TBCM). This concern may occur with or without a trailer connected to the vehicle.

How can I test my Silverado ABS brake system?

Disconnect both the front wheel speed sensor connectors at the frame and harness. Place a Digital Volt Meter (DVM) across the terminals of each wheel speed sensor connector. Rotate the wheel clockwise approximately one revolution per second. The minimum reading should be at least 350 ACmV’s.

Is the DTC set in the Trailer Brake Control Module?

When checking for DTC’s, C1112 or C1114 will be set in the Trailer Brake Control Module (TBCM). This concern may occur with or without a trailer connected to the vehicle. GM is receiving a number of returned Trailer Brake Control Modules (TBCM) and Trailer Brake Relays that are completely functional.

What is the trailer brake relay on a GMC?

GM is receiving a number of returned Trailer Brake Control Modules (TBCM) and Trailer Brake Relays that are completely functional. 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.

Can a trailer brake system work on a Silverado?

So the trailer brake system can sense if there is a trailer attached. Plenty of problems with the built in trailer brake system, see your dealer. Best is going to the dealer and have the codes read. See what may be happening. My 2016 has had a bunch of problems with the service trailer brake.

Why do I get a service trailer brake system warning?

Been getting a random “service trailer brake system” warning while driving with no trailer. With trailer I get that code every time I start, and must dismiss it. While towing, it seems as if the brakes are dragging, slowing me down, and killing mileage (7-8 with 1900# v nose). Just checked the truck 7 pin and get .7 volts at the trailer brake pin.

How to replace a brake sensor on a GMC Truck?

Use ONLY Wheel Bearing Lubricant, P/N 01051344 (Canadian P/N 993037). Install either the original sensor or a new one in the hub. Ensure that the sensor is seated flush against the hub. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual.

Where do you set the brake on a service trailer?