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Mike S.
Mike S., ASE Certified Technician
Category: GM
Satisfied Customers: 7433
Experience:  ASE Certified with 25+ years experience.
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Is there a relay that operates the itbc
, my monitor

Customer Question

is there a relay that operates the itbc
JA: Sometimes things that you think will be really complicated end up being easy to fix with a GM. The GM Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.
Customer: my monitor said to check trailor brake system
JA: Are you hoping to fix this yourself?
Customer: I hope I can
JA: Is there anything else important you think the GM Mechanic should know about your GM?
Customer: not at this time
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Submitted: 1 year ago.
Category: GM
Expert:  Tool Hut replied 1 year ago.

Hi, My Name is ***** ***** for posting your question to just answer. I am a independent contractor for just answer, and ASE Certified Master Auto Technician with 20 years experience. I am confident we can resolve your problem together.Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resolution.There will probably be some equipment needed for a proper diagnosis. If you are not comfortable with this or do not have any test equipment please let me know ASAP. I also try to give all of the information you may need expecting a positive rating. I am not compensated for my time until you leave a positive rating. Your rating should be based on the service you received.

What kind of vehicle do you have?

Customer: replied 1 year ago.
2011 chev 2500hd duramax
Customer: replied 1 year ago.
Every time I start it it comes up with service trailer brakes
Customer: replied 1 year ago.
Expert:  Tool Hut replied 1 year ago.

Do you have a scan tool that will access the trailer brake module?

Customer: replied 1 year ago.
I do and I don't have any brakes but the lights work fine
Expert:  Tool Hut replied 1 year ago.

Do you have a scan tool that will access the trailer brake module?

Customer: replied 1 year ago.
No I don't and I am done with this question sorry u can't help
Expert:  Mike S. replied 1 year ago.

Yes there is a relay shown at the bottom of this wiring diagram,