# 2005 Cobalt Help. Codes

**URL:** <https://forums.speedlife.net/t/2005-cobalt-help-codes/69985>\
**Category:** NYSpeed Automotive\
**Created:** [July 2, 2009, 12:28pm UTC](https://forums.speedlife.net/t/2005-cobalt-help-codes/69985 "2009-07-02T12:28:42Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\
**Post date:** [July 2, 2009, 12:28pm UTC](https://forums.speedlife.net/t/2005-cobalt-help-codes/69985/1 "2009-07-02T12:28:42Z")

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Co worker having issues with her cobalt. Apparently started bucking on the way home last night and now took it to a shop who apparently has no idea what to do with it.

P0742  
P0700  
U2100  
B1380

No other recent / relevant problems.

Still under the powertrain warranty though…

Go:

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**Author:** ![nitroinsane](https://avatars.discourse-cdn.com/v4/letter/n/d26b3c/32.png) [@nitroinsane](https://forums.speedlife.net/u/nitroinsane)\
**Post date:** [July 2, 2009, 12:40pm UTC](https://forums.speedlife.net/t/2005-cobalt-help-codes/69985/2 "2009-07-02T12:40:55Z")

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the first two are convertor/tranny codes. last is a bcm problem.I think it might has pcm problem. need to see what it is doing on the scanner

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**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\
**Post date:** [July 2, 2009, 12:43pm UTC](https://forums.speedlife.net/t/2005-cobalt-help-codes/69985/3 "2009-07-02T12:43:44Z")

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well its apparently at Billy Bob’s shop… :tif:

any idea if bcm / pcm is covered under powertrain?

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**Author:** ![nitroinsane](https://avatars.discourse-cdn.com/v4/letter/n/d26b3c/32.png) [@nitroinsane](https://forums.speedlife.net/u/nitroinsane)\
**Post date:** [July 2, 2009, 12:47pm UTC](https://forums.speedlife.net/t/2005-cobalt-help-codes/69985/4 "2009-07-02T12:47:21Z")

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ugh. how many miles are on it.I am leaning more towards a tranny problem the more i read. My 05 started slipping right before trade in.I can’t remember what code showed.

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**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\
**Post date:** [July 2, 2009, 12:50pm UTC](https://forums.speedlife.net/t/2005-cobalt-help-codes/69985/5 "2009-07-02T12:50:40Z")

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im reading that unpluging the TCC is a quick diagnosis… either the solenoid or a leak in the trans