transmission bumps when accelerating

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transmission bumps when accelerating

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Chevrolet >> Chevy Cars >> Cobalt >> transmission bumps when accelerating

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transmission bumps when accelerating - 12/23/2007 7:46:35 PM

domtar

Posts: 3
Joined: 12/23/2007
Status: offline

2007 colbat bumps when accelerating from 50 mph to 60 mph when passing someone. Has no other problems when shifting at other times. Also does not bump if pushing pedal to floor when passing. Dealer has replaced valve body but problem still exists. Has anyone had this problem and had it repaired. Help !

Post #: 1

RE: transmission bumps when accelerating - 12/27/2007 5:32:17 PM

Red07SSNA

Posts: 18
Joined: 11/11/2007
Status: offline

This one is a mystery....it only bumps when passing, never during normal shifts particularly under heavy acceleration? Considering the dealer has looked at it for you, unless someone that frequents this forum that has had this problem before and fixed it can come to your aid, I don't know how to help you over the computer -- sorry.

(in reply to domtar)

Post #: 2

RE: transmission bumps when accelerating - 1/3/2008 10:34:51 AM

domtar

Posts: 3
Joined: 12/23/2007
Status: offline

Just thought I would give everyone a heads up in case you run in to this problem. Dealer has replaced the transmission control module and so far seems to have fixed the problem. Thanks

(in reply to Red07SSNA)

Post #: 3

RE: transmission bumps when accelerating - 1/5/2008 12:37:31 AM

brainmuncher

Posts: 5
Joined: 1/4/2008
Status: offline

I think they had a lot of those parts in 2007 Cobalts or something. Mine did the same thing.

(in reply to domtar)

Post #: 4