Question about 2006 GMC Envoy

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Was driving down the interstate and it just all of a sudden statred losing speed,pull it over and it started idiling really roughly then shut off about five minutes later,everything electrical died shortly after and it wouldnt start,we tried boosting it off,it would get power when we hooked the cables to it,but everything inside of it starting going crazy when we turned the ignition switch on-wipers came on by themselves,it even tried to start on its on,the engine turned over by itself when we had the switch on,we went to the parts store and they told us it was either the battery or the alternator-we had them both tested and the battery was bad but alternator was good,we replaced the battery and attmpted to start it and it would only just turn over and wouldnt start and then it attempted to start on its own again when we had the switch on,so we had it towed to gm today and they told us it was the fuel pump but i honestly just done buy that because whatever it was drained the battery,so does anybody out there have any idea what may be wrong?

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Heres your answer, I also have a envoy and it did the same thing. Have you catalitic converter checked, your exhaust is all plugged up.

Posted on Dec 30, 2009

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