Had both of my running boards replaced in the Denali around 60,000. I live in the northeast in PA and I found that the motor that runs the boards up and down is not a sealed unit. I think that salt and dirt gets inside of it and trashes it. Sounded like landing gears on an airplane when they...
Dealer contacted me today and said that GM returned his call and stated that this rough idle issue/power loss has been reported by numerous customers/dealers. At this time they are not sure what is causing the issue and would be further investigating the problem?! So I guess I am just...
I have a rough idle in my denali that seems to keep getting worse. I've had it to the dealer 2 times now. The first they suckered me in to getting a fuel system cleaning that I thought was what they consider a "top end cleaning". They basically just dumped fuel cleaner in the tank and sprayed...
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