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traction control malfunction on 2003 Chevrolet Impala

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I get a traction control malfunction warning on the dash information system. This happens when the car is started, and a grrr sound is present. It stops when I disable the traction system using the on-dash button. What could be going on? transmission fluid is correct, serviced the brakes at Sears recently.
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You need to have the Traction control system inspected. Did the problem ever occur before you have the brake work? Maybe they accidentally left something loose?
I had the same problem and took it to the dealer. They had it in the shop for about 5 minutes and came to me and said the right side harness is bad. Cost $214.72 to fix witch only took them 45 minutes. The harness is about 15 to 20 inches long. This must be a common problem for them to tell me 5 minutes. They said it could have been from water or a bad wire. My 2009 Impala only has 29,000 miles on it and is out of warranty by a year. Never really drive the car to much. I think if it was a bad wire that they know of it should have been fixed by GM.