Question about 2006 GMC Canyon

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My 2006 3.5 ltr engine , very rough idke and sometimes, stalls. also, my gas mileage is very high. approx. 25ltrs/ 100 ktrs

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I have mine at the dealer for the same problem, it turns out that the 5th cyclinder is misfiring. the dealer is paying for the repair as there is a service bulletin out on it. all i have to pay for is the oil change and new sparkplugs

Posted on Jan 13, 2011


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Bad Oxygen sensor. Possibly _also_ bad catalytic converter. If less than (roughly) 70,000 miles, the converter is likely good. But your symptoms are 100% consistent with a bad oxygen sensor (which are sometimes attached directly to the catalytic converter). // Note: If you do need a catalytic converter, have it done at the Dealership. The ''muffler shops'' will install a generic (probably ''ceramic'') replacement, which could adversely affect performance, gas mileage, and _definitely_ not last more than a few years.

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Try disconnecting the battery.Leave it disconnected for approx. 1 hour.This should sort out your light,weather it resets the other problem im not sure good luck.p.s. its a good tip if engine light comes onbefore an m.o.t. follow the above tip it does work.good luck.

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Proper tire inflation (this is huge)
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