Transmission will not shift into overdrive or third gear
2005 GMC YUKON
280,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC
MARK PARKER2
MEMBER
1 POST
FOLLOW
Will not shift into third or overdrive.1st and 2nd gears perfect. Instead of shifting to 3rd it seems to go into neutral.
Jan 19, 2022 at 12:08 PM
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ASEMASTER6371
AUTOMOTIVE REPAIR CONTRIBUTOR
52,796 POSTS
Good morning,
There is a good possibility it is either the valve body in the transmission or the clutches are burned out inside the transmission.
I would start by dropping the pan and looking for debris in the pan's magnet. Check for any chunks as well. This will help me to narrow the area of failure.