2007 Hummer H3 Repair Question
Topics covered: Engine, Four wheel drive, Mechanic.
Mileage: No information provided.
Mileage: No information provided.
Asked on May 8, 2010
2007 Hummer H3 code issue
Engine Mechanical problem
2007 Hummer H3 6 cyl Four Wheel Drive Automatic 78000 miles
2007 Hummer H-3 code issue unable to clear code po411 Reads secondary air inadequate upward flow #1.replaced valve then reset code code then read po411/po418 issue came about around December 2009 to present ran diagnostics relay,pump,pressure,sensors read okay still unable to pass N.Y. inspection. Vehicle runs fine any suggestions
2007 Hummer H3 6 cyl Four Wheel Drive Automatic 78000 miles
2007 Hummer H-3 code issue unable to clear code po411 Reads secondary air inadequate upward flow #1.replaced valve then reset code code then read po411/po418 issue came about around December 2009 to present ran diagnostics relay,pump,pressure,sensors read okay still unable to pass N.Y. inspection. Vehicle runs fine any suggestions
Asked by David C CantatoreAnswer
Replied on July 11, 2010
i don't know if this will help or not but it tells which codes are set and maybe you can check, but from the manual i have it says to much or a a voltage problem or a ground problem but, it could also be a bad connection as well.......
hoepfully you can test your system now....
