Not hp tuners specific. But I need some help. Electronics GURUS. 2008 Trailblazer SS.
I get a P2138 code and reduced power light as soon as I apply the brakes. So what I found out today was that if I ohm out the brake pedal plug and the APP plug, I have continuity on from every pin on the brake to pins a,c,d,f. The only 2 pins that don't have continuity are B and E. So I unplugged the blue ECM connector and lost all continuity. Has my ECM burnt up? Or is there something else I need to know or look for.