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Re: Lack of power
Stay with the Iridium plugs if that is what came in the car. When you are driving does the engine rev and the car does not want to move or does the engine not rev at all and the car is sluggish? If the engine revs but the car does not move you may have a transmission issue. If it does not rev you may have a problem with the catalytic converter. There is a problem with certain 2001 and 2002 GM cars with bad converters. You may want to check with the dealer to see if your car is one of the models with this problem. If so they will repair it for free and give you an extended warranty.
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