I have a 1999 GMC Sierra 5.3 liter. Automatic
transmission does not want to change gears
from 2nd to 3rd. It goes from second to
neutral... and then finally kicks in to 3rd or 4th?
Is my transmission blown or is it wiring harness
to the solenoids? please help!!
If you don't think the trany is slipping, it just may be a solenoid in the trany. Just have a trany shop check it out.
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