Why is my service trailer brake not working?

Why is my service trailer brake not working?

The engine RPM is too low. The engine RPM is too high. The system voltage is not between 9-16 volts. The Antilock Brake System (ABS)/Traction Control System (TCS) is active for more than 2 seconds. I scanned for codes, nothing.

What’s the difference between check trailer and service trailer?

Service Trailer Brake System means that the trailer braking system in the truck has a problem whereas the Check Trailer Wiring means that the truck has detected a fault in the trailer wiring and this is usually a very good indicator of where the problem is.

What was the problem with my Duramax trailer brakes?

My truck (08 2500HD duramax) was going to go off warranty soon so I had the dealer look at it. The said a pressure sensor in the master cylinder that provides the voltage output based on pressures to the trailer brake control was dead. They replaced it and power bled the front brakes.

What happens when LCI is disabled on a trailer?

When LCI’s Sway Command® is functioning on a trailer, the subject GM truck will display “Service Trailer Brake System” in the vehicle message center, the ITBCM will become disabled and the electric trailer brakes will not function until the ignition has been turned off and back on to clear the code.

What does service trailer brake system error message mean?

According to the owner’s manual for a 2015 GMC Sierra, the “Service Trailer Brake System” error message can appear on models equipped with the factory integrated trailer brake controller (ITBC) and represents a problem in the trailer brake module or wiring that will not allow power to be sent to the trailer’s brakes.

Is it okay to drive a trailer with an error message?

It is okay to drive the vehicle with this error message present but you will not want to do any towing until it is fixed. Unfortunately, third party support for the factory integrated trailer brake controller is not in abundance therefore you will need to take the trailer to the dealer for service.

Is the service trailer brake on my 2016 Silverado Sierra?

My 2016 has had a bunch of problems with the service trailer brake. Not sure it has been resolved, but it has been better after the dealer replaced the trailer plug. Going to be towing in a couple of weeks, and we will see.

What is the GM service 4 wheel drive message?

GM has issued a service bulletin # 09-04-21-001 to address a Service 4 Wheel Drive Message condition on the vehicles listed below. In addition to the Service 4 Wheel Drive Message, you may also have a C0387 or a C0569 trouble code stored.