Can some one point me in the right direction. I've tried just about everything to raise my idle rpms and nothing. Not one time has the rpms made any change. I watched every video on YouTube and I don't know what else to try. I have a 2005 tahoe L59 5.3L 4l60 with a stage 2 cam and shorty headers. Working with os 12587603 and that's only because there is no good xdf for my original os 12592618. Any help is greatly appreciated!
