"Trac Off" and "ABS" dashboard indicators on 2001 Buick Park Avenue

come on randomly afetr 3 to 10 minutes. The car seems to perform fine, but the idiot ligts do come on randomly. after I turn the ignition off and later drive agina the ligths are off for a while then come back on. is this some module or sensor intermittance or a bad ground?

by in Rocklin, CA on October 18, 2010
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1 answer
ANSWER by , October 18, 2010
Often the ABS sensors at the wheels get contaminated with metallic dust from the brakes and cause intermittent failures like you describe. I've been able to clean them with a blast of compressed air, wearing appropriate eye and face protection. It doesn't always work, but it's worth a try. Or bring it to a mechanic who works on Traction and ABS systems. Here's a directory for you: http://repairpal.com/directory?address=95765&car_brand_names=Buick