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Check Engine Soon Light
CHECK ENGINE LIGHT ON, P1125 CODE, REDUCED ENGINE POWER
2003 GMC Yukon
July, 22, 2012 AT 5:27 PM
For my 2003 gmc yukon xl, the checl engine light is on, we are getting a p1125 code and reduced engine power. We have replaced the app
sensor and thottle body, but no has change. What else can we do.
FOUND 17083 RELATED QUESTIONS
Check Engine Light 25,26, And 71.
Service Engine Light And O/d Off Light B
July, 22, 2012 AT 5:33 PM
Either the throttle body or the pedal sensor is bad. You need to have it checked to verify
July, 22, 2012 AT 5:54 PM
Even though both were brand new parts, the thottle body was replaced yesterday, and the app sensor about a moth ago.
July, 22, 2012 AT 6:02 PM
New gm parts? Was the module on the pedal sensor?
July, 22, 2012 AT 6:08 PM
The parts came from orileys I was wondering if not being oe would that have anything to do with it also the evap purge valve is loose think o ring may be worn down im just out of ideals
July, 22, 2012 AT 6:09 PM
I would use only gm parts for that repair.
Evap issue has no effect on this system.
July, 22, 2012 AT 6:20 PM
Yes the module was on the pedal
July, 22, 2012 AT 7:09 PM
Ok, still would only go with gm original. Had no luck with aftermarket parts.
Get it checked at a shop to confirm. Make sure all connectors are clean and tight
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