Question about 1999 GMC Yukon
This sounds like you have a bum MAF sensor (mass air flow sensor). This is the sensor between the air box and the throttle body. These are really good trucks. Unplug the sensor which is a 4 pin plug. If it accelerates from there, replace the maf. If it still does not accelerate, remove the fuel filter which is on the driver's side of the frame and blow through it. If you can not blow through it like a straw, it is plugged and is starving the engine for fuel. Let me know what you find, be happy to help.
Posted on May 22, 2011
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Posted on Jan 02, 2017
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