# Crazy Pontiac

**URL:** <https://community.cartalk.com/t/crazy-pontiac/45875>\
**Category:** Maintenance/Repairs\
**Tags:** pontiac\
**Created:** [March 10, 2010, 7:54pm UTC](https://community.cartalk.com/t/crazy-pontiac/45875 "2010-03-10T19:54:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![birddt3](https://avatars.discourse-cdn.com/v4/letter/b/71e660/32.png) [@birddt3](https://community.cartalk.com/u/birddt3)\
**Post date:** [March 10, 2010, 7:54pm UTC](https://community.cartalk.com/t/crazy-pontiac/45875/1 "2010-03-10T19:54:58Z")

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Hi, I was accelerating on a highway today when my car’s warning lights suddenly started flicking on and off and the transmission started shifting up and down erratically. I pulled over the car and it died, and died again when shifted from park into gear. The speedometer was maxed out to 120 mph, with the car sitting still. I checked fluids and turned off my air conditioner. Upon pulling back on the highway the speedometer reset, no more flashing warning lights, and normal shifting…Any thoughts? Thanks.

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [March 10, 2010, 8:10pm UTC](https://community.cartalk.com/t/crazy-pontiac/45875/2 "2010-03-10T20:10:39Z")

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That MAY be an electrical glich. PCM?

CEL come on? Any codes?

Year/mileage/engine/standard or auto?