# 97 chevy 2500 pu Falling out of overdrive

**URL:** <https://community.cartalk.com/t/97-chevy-2500-pu-falling-out-of-overdrive/33933>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, 2500\
**Created:** [July 24, 2009, 5:22pm UTC](https://community.cartalk.com/t/97-chevy-2500-pu-falling-out-of-overdrive/33933 "2009-07-24T17:22:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tommyCAMP](https://avatars.discourse-cdn.com/v4/letter/t/0ea827/32.png) [@tommyCAMP](https://community.cartalk.com/u/tommyCAMP)\
**Post date:** [July 24, 2009, 5:22pm UTC](https://community.cartalk.com/t/97-chevy-2500-pu-falling-out-of-overdrive/33933/1 "2009-07-24T17:22:47Z")

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i rebuilt a 4l80e transmission in a 97 chevy pickup.It shifts into overdrive then imediatly falls back to third.Anyone have an idea

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**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [July 24, 2009, 10:27pm UTC](https://community.cartalk.com/t/97-chevy-2500-pu-falling-out-of-overdrive/33933/2 "2009-07-24T22:27:14Z")

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Possibly a bad TPS… I would start by scanning it to see whether the 4-3 downshift is being commanded by the computer.

transman