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Ask Gm Tech (Cam) Your Own Question
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 29588
Experience:  GM Grand Master Technician 2007. 14 year experience.
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I have a 2008 GMC Sierra 2500HD with the 6.0l. I click on

Customer Question

I have a 2008 GMC Sierra 2500HD with the 6.0l. I click on the cruise control button and the light goes on, but when I try to set it nothing happens. Whats wrong and how do I fix it?
Submitted: 1 year ago.
Category: GMC
Expert:  Gm Tech (Cam) replied 1 year ago.

hi there, I am cam.

The most common issue with these is the brake switch. Bad contacts often cause the system to think the brake is pressed. Replace that switch and evaluate the issue.

Customer: replied 1 year ago.
What is the part number for the switch and the procedure to replace it?
Expert:  Gm Tech (Cam) replied 1 year ago.

I don't have a current part number but any part store will have it and they are about 25 or so.

AS for the procedure, this is a wire connector, bolt and clip on the side on the side of the brake pedal.

Customer: replied 1 year ago.
I need a part number
Expert:  Gm Tech (Cam) replied 1 year ago.

ACDelco D1586H