Question about 2010 GMC Yukon Hybrid
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Posted on Jan 02, 2017
The following is a post from another site. I had the same problem and this worked for me.
I just wanted to share with everyone with the problem that I had withmy 2003 1500HD Crew Cab with 6.0 Liter. My truck would go into reducedengine power off and on. Sometimes one a week, sometimes 5 times on a20 mile trip. My problem was a broken wire on the plug in going in tothe throttle body. In the picture is the plug in that had caused me allof my pain and grief....... My problem was very intermittent and washard to diagnose. I started vehicle and with all codes clear. I wiggledthe wiring harness in the picture and vehicle spit and sputtered,throwing it into reduced engine power mode, and then smoothed out to asmooth idle. I disconnected the plug and pulled wires out of plug endand found a broken wire. Mine was a brown wire with white stripe. BUT,what was interesting, was that this vehicle had apparently had the smaeproblem with previous owner, becuz there was another wire (yellow wire)right beside the one that I found broken already soldered up and tapedfrom where it had apparently happened before. This was my problem andnot my truck is running great, and actually even idles better thatbefore. Hope this helps with any problems that anyone else is having. Iknow this problem can be very irritating.
Posted on Mar 26, 2009
Your engine has reached it service period. You will need have it serviced, change engine timing belt, point plugs oil etc. snd then have the brain reset using a diagnostic tool!
Posted on Feb 27, 2010
This is a 'limp home mode' and is engaged if a fault is detected that may result in damage to the engine if allowed to go unchecked. Take the vehicle to a dealer or Autozone and get a read out of the stored error codes from the on-board diagnostics module as this will help define the exact nature of the fault.
Posted on Dec 29, 2010
This light comes on when a problem occurs with the throttle body assembly or the electronic pedal assembly. If their is dirt,mud, or moisture in any of the connections where the harness plugs in it can make this happen. If it has alot of miles on it the electric motor that controls the throttle may have too much play and bind under acceleration. The motor is not serviceable and may require replacement. The pedal assembly also is non-serviceable.
Posted on Jan 06, 2011
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