# Transmission **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** pontiac\ **Created:** [January 9, 2010, 9:06pm UTC](https://community.cartalk.com/t/transmission/42167 "2010-01-09T21:06:54Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![RE7MAN3](https://avatars.discourse-cdn.com/v4/letter/r/b5e925/32.png) [@RE7MAN3](https://community.cartalk.com/u/RE7MAN3)\ **Post date:** [January 9, 2010, 9:06pm UTC](https://community.cartalk.com/t/transmission/42167/1 "2010-01-09T21:06:54Z")
Hello, I have 04 Pontiac Grandam, and every once in a while, while driving on a flat straight road, the car will shift up and then down. It might do this again or stop for a while. Also sometimes when I set my cruise control the cruise will go off, I’ll set it and go off again. could these two be related. The reson this started I ran over a deer. Thank you ---
**Author:** ![95\_Integra\_GSR](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/95_integra_gsr/32/1633_2.png) [@95\_Integra\_GSR](https://community.cartalk.com/u/95_Integra_GSR)\ **Post date:** [January 10, 2010, 1:49am UTC](https://community.cartalk.com/t/transmission/42167/2 "2010-01-10T01:49:05Z")
new transmission is needed,pontiac isnt known for there quaitly transmissons ---
**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:** [January 10, 2010, 2:08am UTC](https://community.cartalk.com/t/transmission/42167/3 "2010-01-10T02:08:47Z")
You need to have the computer scanned for codes. This could be something very simple as a TPS (Throttle Position Sensor).Scanning it and monitoring live data will tell you whether the shifting is computer commanded or not. Since the cruise is also cutting off, thats a strong indicator its most likely electronic. transman