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2003 Chevrolet Avalanche 1500 Question: abs and brake lights come on whenever i go over a small bump ..please help..

 

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Visitor, West Hills, CA, March 06, 2010, 17:11

abs and brake lights come on whenever im going over a small bump or pot hole it also says to service brake system when i already serviced the brakes... my speedometer isnt working also..i dont know what it could be please help.......

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    truckservice June 25, 2010, 11:57
     Rookie

    also having problems reduce engine power light coming on and the a/c going off

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    Visitor, July 26, 2010, 09:35

    My 2004 Avalanche is doing all of these things as well. The dealership is telling me I need different modules replaced but I'm not convinced. All of theses things go hay wire at the same time and only when I hit a bump in the road. Any solutions?

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    Visitor, February 27, 2011, 20:07

    I have a 2002 Avalanche and my ABS and Brake light come on when I hit a bump or just driving. I had a diagnostic test done and was told I needed to replace the ABS switch module.

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    Notahappyowner, May 25, 2013, 09:37
     Rookie

    Hi,

    I'm having the same problem you all described, to a point that I can't really drive it anymore. Has the problem been fixed for any o you? Mine (at 2004) has been in the dealership for a while and they can't figure it out... I'm pretty scared to see the final bill and a nil diagnosis!

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