Stability track light on goes into limp mode

2013 GMC SIERRA
171,000 MILES • V8 • 4WD • AUTOMATIC
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BLANCO68
  • MEMBER
  • 3 POSTS
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.
Jan 21, 2022 at 1:25 PM
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SQM
  • CERTIFIED EXPERT
  • 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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Jan 21, 2022 at 2:40 PM