I HAVE A 2012 COLORADO CS15653 EXSTENDED CAB 2 SMALL DOORS ID NUMBER 1GCESF93C8112689 WITH A 2,9 4 CYC.
I HAVE 4,000 MILES ON IT AND I CAN NOT GET MORE THAN 14 TO 15 MILES PER GALLON.I WAS GETTING BETTER THAN THAT ON MY 1997 S-10 WITH A 6 WITH FUEL INJECTION.I KNOW THERE HAS BE SOME THING WRONG BUT I CAN NOT GET A ANSWER FROM THE DEALER.
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