Keeps shutting off while driving?

Tiny
MELISSA WINDSOR
  • MEMBER
  • 2003 GMC YUKON
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
It starts and will go for a bit then shuts off while driving, replaced fuel filter, can hear pump come on, checked lines for leaks, primed it by turning off and on several times. Need Ask matrix for the wiring on the motor.
Tuesday, February 4th, 2025 AT 4:11 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,321 POSTS
Hello Melissa,

This is typical when the crankshaft sensor starts to go out, here is a video to help you replace it which should fix the problem, also do you have a check engine light on? If so, we should run the codes to see what codes are stored.

https://www.youtube.com/watch?v=-Ib3Lkde3Wo&t

Please go over this guide as well to retrieve the codes:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

This guide shows you the other possibilities for the stalling:

https://www.2carpros.com/articles/engine-stalls

Please go over these guides and get back to us.

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Wednesday, February 5th, 2025 AT 8:57 AM

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