MurdrNali
TYF Newbie
Hey guys, my denali has started idling kinda rough lately. It's weird though because it will be fine then surge almost like it has a cam in it then be fine then surge. It does this off and on several times while idling at a stop light or while in park. My first thought was fuel pump, but I figured it'd be dead by now. Only thing else I can think of is maybe clean the TB and MAF? I'm stumped ohh and no CEL either. Any input is appreciated! Thanks