Jump to content

  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

2008 2500HD Service Trailer Brake System

Lewcul

By Lewcul
in 2000-2014 Silverado & Sierra HD

 Share

Recommended Posts

Lewcul New Member

Lewcul

Posted
Posted

The Service Trailer Brake System light is coming on at random times. The trailer does not have to be attached. It happens when I take my foot off the brake pedal and resets when I restart the engine. I have replaced the module near the spare tire, the controller on the dash and the sensor at the master brake cylinder. I don’t know what else to do. 

Link to comment
Share on other sites
Hillwood Enthusiast

Hillwood

Posted
Posted

You should start with pulling chassis codes to get a definite failure.
Check the trailer connector, if there is any corrosion replace it. The plugin at the connector also if there is any corrosion.
A new module would have to be programmed to work.
I have seen a lot of relays fail. If you want to just try parts.

Sent from my SM-G965U using Tapatalk

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

  I accept