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Stability track light on goes into limp mode

Tiny
BLANCO68
  • MEMBER
  • 2013 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 171,000 MILES
Stability track light on disconnected battery overnight truck worked fine no light on, then after driving for 5 minutes or less light back on and truck in limp mode or I guess you can call it where it has no speed/acceleration.
Friday, January 21st, 2022 AT 1:25 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

One of the most common causes for these trucks to go to limp mode is having a dirty throttle actuator.
Dirty or a malfunctioning actuator will be unable to send correct data to the ECM. That will make the ECM trigger the limp mode or low power mode.

https://www.2carpros.com/articles/reduced-power-limp-mode

So, cleaning out the throttle actuator is a good place to start.

https://www.2carpros.com/articles/throttle-actuator-service

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
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Friday, January 21st, 2022 AT 2:40 PM

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