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  1. R

    03 Yukon 5.3L Engine Stalls While Idling

    He charged me fpr a "part". I am not sure if he charged for an OEM part. It's not stipulated on the receipt. And, by the way, the Yukon is running like a new car. I think it is finally fixed! … until the next issue comes up. :-)
  2. R

    03 Yukon 5.3L Engine Stalls While Idling

    So there is a new development. In my original post, you will see "10)Wrong fuel pump and gas filter replaced by mechanic". Everything seemed to be fine until it stalled again during rush hour traffic on a tollway. I got it started again, and limped into a parking lot. This time, I had it...
  3. R

    03 Yukon 5.3L Engine Stalls While Idling

    Well, things got worse for my Yukon. After the throttle body was installed, the car stalled again. My mechanic replaced the gas pedal assembly. He kept it for a few days to test, and when I picked it up, it ran great, but then it stalled again. The mechanic then installed new AC Delco spark...
  4. R

    03 Yukon 5.3L Engine Stalls While Idling

    Well, I jumped the gun when reporting that my stalling problem was probably solved. A few days after test driving my Yukon, it started dying on me again. I took it back to my mechanic who thought he found a problem with the ABS module. According to him, a faulty ABS could cause up to three...
  5. R

    03 Yukon 5.3L Engine Stalls While Idling

    Well, the dealership let me down. Go figure. The dealership mechanic reported that the ECM was reporting internal errors. I replaced that, but it didn't work. So, I took the Yukon to my go-to repair shop, and they found the problem very quickly. There were actually two things that showed up...
  6. R

    03 Yukon 5.3L Engine Stalls While Idling

    I have no idea. I don't even know what fuel trims are, but I will learn.
  7. R

    03 Yukon 5.3L Engine Stalls While Idling

    The throttle position sensor came attached to the new throttle body that I installed.
  8. R

    03 Yukon 5.3L Engine Stalls While Idling

    Nope. No codes except when the cam and crank sensors had to be replaced.
  9. R

    03 Yukon 5.3L Engine Stalls While Idling

    Thanks for the reply. I do not believe that the intake manifold gaskets have been checked for leaks. How would I go about doing that myself? What would a Tech2 tell me that the dealership technician's scan tool didn't tell him?
  10. R

    Howdy!

    Thanks for the reply. I've already posted the problem at this link: https://www.tahoeyukonforum.com/threads/03-yukon-5-3l-engine-stalls-while-idling.108736/ Please take a look.
  11. R

    03 Yukon 5.3L Engine Stalls While Idling

    I have a 2003 GMC Yukon that stalls when idling. The vehicle is a 5.3L Yukon SLT with 189,000 miles. Stalling happens when the vehicle is at rest or while driving with my foot off the accelerator. 1) About 2 years ago, started stalling while coasting to a stop, but restarted easily and ran...
  12. R

    Howdy!

    Got a 2003 GMC Yukon as a "hand-me-up" from my son, but it hasn't been a pleasurable experience. LOTS of problems, and I can't wait to get suggestions from members.

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