I HAVE A GMC YUKON. IT HAS BEEN IDLING ROUGH IN THE COLD MORNINGS. SOMETIMES I HAVE TO HELP IT BY PRESSING THE GAS A LITTLE BIT TO HELP IT ALONG.
LOOKING FOR POSSIBLE FIXES TO BETTER IMPROVE THE IDLE.
ANY HELP IS APPRECIATED.
I have a 2003 GMC Yukon. I'm looking to get it undercoated, but I have concerns.
* Can you undercoat brake lines?
* Should I prep the bottom for undercoating? (Ie: remove any flaking rust, the hitch looks really rusty)
* If the hitch is rusty, is it smart to just swap that out?
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