Cruise control doesn’t work

By travis chaney
May 31, 2020 in Troubleshooting & Recalls

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travis chaney

Posted May 31, 2020

Hi, all.

Looking for some hep to get my cruise control working. I have a 2017 3500HD Duramax with 112k miles. The cruise control doesn’t work at all. No indication on the DIC, nothing. All fuses are good except the trailer battery (#2). That didn’t fix the problem. The truck had an external Tekonsha brake controller on it when I got. I read somewhere that external controllers can mess with the cruise on these trucks, so I removed it. No joy. Does anyone know if the external brake controller could have messed the cruise up? Any other thing to check? Thanks in advance!

Travis

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