Sep 22, 2009 · OBD-II Trouble Shooting - Got a code reader? Find out what your GM car's Check Engine light is trying to tell you (and then turn Check Engine light off).

Mar 21, 2018 · Chevrolet - P1404 and learned closed position - 2000 Venture 3.4 165K Vehicle has intermittent P1404 (and sometimes P0404). EGR valve appears to function normally. Scan tool …

Sep 27, 2009 · OBD-II Trouble Shooting - Got a code reader? Find out what your GM car's Check Engine light is trying to tell you (and then turn Check Engine light off).

Buick; Le Sabre Oldsmobile; LSS, Eighty Eight & Regency Pontiac; Bonneville

INTRODUCTION Most engine control problems are the result of mechanical breakdowns, poor electrical connections or damaged vacuum hoses. Before considering the computer system as a possible …