Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Some times the abs light and trac light come on, on these models (montana/ventru) when there is no abs issue, I have found that the rear brake lamps will be the casue. remove the brake light housings, unplug them from the connector and check the connector terminals on both the tail lamps and the wiring harness. some times they melt causing the brake light power to feed back in to the abs system, check both sides for this concern. If there is no problem, then It's best to get the codes from the abs controller, dont know if any body over there is able to do so.
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