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Ok on my 05, ive only been able to do it once but, when its cold in the mornings how do i get my truck to idle up higher so it will warm up quicker, and yes in tjesettings it is turned on
 

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i have noticed with mine that is has to be cold for it to idle up and sometimes it takes it a little bit for it to do that but im not sure why that is.
 

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You can wire in a manual high idle that uses the cruise to idle it up ANYTIME you want it. I have posted it many times on here when this question has come up.
 
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