Question about 2002 GMC Yukon XL
Did you clean the mass air flow sensor when you changed the filter? Get some MAF sensor cleaner and follow the directions. Have the alternator tested. Do you run the gas tank all the way to empty all the time? If so the pump may be shot the pump needs to be submerged in gas to keep it cool if you run it below 1/4 tank a lot its life is considerably shortened. you could also have a vacuum leak ,so that when you apply the brakes there is not enough vacuum left to run right. lastly the Idle air control motor could be weak.
Posted on Apr 24, 2009
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Posted on Jan 02, 2017
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