Check engine light on, P1125 code, reduced engine power
RNB_82_05
MEMBER
2003 GMC YUKON
142,000 MILES
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.
Sunday, July 22nd, 2012 AT 5:27 PM
7 Replies
ASEMASTER6371
MECHANIC
52,797 POSTS
Either the throttle body or the pedal sensor is bad. You need to have it checked to verify
Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Sunday, July 22nd, 2012 AT 5:33 PM
RNB_82_05
MEMBER
4 POSTS
Even though both were brand new parts, the thottle body was replaced yesterday, and the app sensor about a moth ago.
Was this
answer
helpful?
Yes
No
+2
Sunday, July 22nd, 2012 AT 5:54 PM
ASEMASTER6371
MECHANIC
52,797 POSTS
New gm parts? Was the module on the pedal sensor?
Roy
Was this
answer
helpful?
Yes
No
+3
Sunday, July 22nd, 2012 AT 6:02 PM
RNB_82_05
MEMBER
4 POSTS
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
Was this
answer
helpful?
Yes
No
Sunday, July 22nd, 2012 AT 6:08 PM
ASEMASTER6371
MECHANIC
52,797 POSTS
I would use only gm parts for that repair.
Evap issue has no effect on this system.
Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, July 22nd, 2012 AT 6:09 PM
RNB_82_05
MEMBER
4 POSTS
Yes the module was on the pedal
Was this
answer
helpful?
Yes
No
Sunday, July 22nd, 2012 AT 6:20 PM
ASEMASTER6371
MECHANIC
52,797 POSTS
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