BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB · 2017-12-18
This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehicles. Please discard PIP4578.