Transmission

Asked by Jun 22, 2016 at 09:27 PM about the 1999 GMC Sierra 1500 SLT 4WD Extended Cab SB

Question type: Maintenance & Repair

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!!

1 Answer

73,085

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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