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Discussion Starter · #1 ·
I have a 2005 GMC Sierra 2500HD Diesel. Yesterday while on a trip I was riding along with the cruise control engaged. Sometimes to light up the dash board I turn on the "fog lights". Yesterday when I pushed the button to turn on the fog lights the cruise control "disengaged". I don't remember that ever happening before. So I tried it again and the same thing happened.
So I engaged the cruise control and turned on the headlights. The cruise control disengaged.
When it got dark the head lights came on automatically. And the cruise control disengaged.
So whenever the headlights or fog lights are on the cruise control will not engage!
HELP! Please I don't even know where to start.
Appreciate any advice or assistance you can give me.
Thanks and God Bless

Premium Member
3,170 Posts
Was it a bumpy ride? Can you duplicate this issue today?

The roads here are so bad it will jar my cruise control off. LOL and in talking about the interstate...

sent from my Verizon Wireless Galaxy SIII
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