| the 101 401 404 codes are probally all from a bad egr valve! A open exhaust wont throw a 404 code to my knowledge. and a finger stick will not fix a 404 either, but none the less i recomend installing a finger stick and blocker after the dealer replaces the egr! the other two injector codes definetly sound like the injector harnes problem. like ob1 said there was a gm service bullitan on this, i'll see if i can hunt it up for ya!
__________________ Caleb 05 D/ZF Reg. Cab
PPE GT 4094r, ATS CP3X2, Best ET-12.53@ 109MPH 5/08
Stock Turbo, ATS CP3X2, Best ET -12.91@ 106MPH 10/08
Under the knife to attach a second turbo
04.5 D/A CC/SB- SCIV w ATS 5star converter,Mike L cooler
Stock Turbo Best ET 13.53 @ 103Mph @ 7300lbs
Waiting install of GT4094R |