P0404 and p0420 P0404 p0420 chevy P0404 p0420 forum chevy
p0404 and p0420 - Chevrolet Forum - Chevy Enthusiasts Forums
P0404 code: exhaust gas recirculation circuit range/performance problem
Silverado chevy code p0442 p0171 p0121 p0304 misfire trouble common relatively cylinder detected stands
P0404 egr problem recirculation exhaust gas system range performance pressure troublecodes vacuum valveP0174 silverado solved gm trucks edited september P0440 chevy silveradoP0404 – exhaust gas recirculation (egr) system range/performance.
P0404 and p042003 silverado 5.3 p0174 *solved* Egr sensor p0404 recirculation exhaust gas valve carparts replacement.
