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When I drive my 2004 Buick Rainer for more than an hour my speedometer stops working. I have also noticed surges in power. And last but not least sometimes it excelerates on its own. I almost got into an accident because of it.

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Did you take it an have it checked for DTC'S - diagnostic trouble codes ? is the check engine light lit ? Have you seen any messages in message center ( if yours has one ) reduced engine power ? Your vehicle is very electrified , electronics galore ! Control modules for everything , you vehicle has electronic throttle control , if you know what that is . Your going to need to take this to the repair shop where they have the tools an know how to diagnose it !

Posted on Mar 29, 2015


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