2000 GMC Sierra 4.3 question ?

4l60e overheating warning came on dash right when the truck didn’t want to change gears. I immediately pulled over. Trans fluid is full and there’s no leak and my transmission was fully rebuilt in Jan. New wiring harness new solenoids new torque converter and all new everything by a shop. I flushed my cooling and put a new radiator a week ago and there’s no signs of leaking. I have warranty but any ideas? I shut it off and let it cooled to check the oil. Once I saw it was full I tried to exit the highway. It does not go into 3rd

2 Answers

  • Anonymous
    2 months ago

    Time to use the warranty.  Rebuilt transmissions are hit and miss.

  • Ron
    Lv 7
    2 months ago

    good thing you have a warranty

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