Sorry, I wasnt clear on my last post. I have 04 tahoe LT fully loaded. I had truck at shop saturday they say the ecm is bad, which is causing abs, brake light.. Service 4wd and service stability is a bad relay in the dash.. Local muffler place says take to dealership cause they cant fix dealer...
I have a 2004 Chevy Tahoe, ABS, Brake, Service ride control, service 4wd drive lights are on in the dash board. Also the speedometer doesnt work.. can anyone help or have had this problems before.
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