Last post on Apr 17, 2010 at 12:00 AM
You are in the GMC Yukon
What is this discussion about?
GMC Yukon, SUV
#2 of 5 Re: 2002 Yukon - Service Light - Mass Air Flow [heatheri]
Jan 27, 2008 (9:58 am)
What was the code shown on the scanner? PXXXX...
If indeed its the "Mess Air Flow Sensor", you may want to first visually exam the sensor for any dirt/dust build-up on it. If it needs cleaning, make sure you remove the sensor from the hose "very carefully and not to drop it"... I have used QD Electronic Cleaner on mine before, just spray clean the sensor without touching or getting too close to the sensor. Make sure to let it air dry before reinstall and clear the code... DO NOT use Gumout or Carburetor cleaners as they are too strong and will leave residue on the sensor. Only use spray type "Electronic" device/contact Cleaner. Hope that will help.
BTW, is the air filter in good shape...? Just checking the basics...
#3 of 5 Re: 2002 Yukon - Service Light - Mass Air Flow [rsht]
Jan 28, 2008 (10:23 am)
BTW, CRC also makes the specific cleaner for the Mass Air Flow Sensors. You can find it in your local auto parts stores.
Dec 10, 2009 (9:23 pm)
I have a 1999 gmc Yukon slt and my engine light has been on for about a year already. I dont know what the problem is but I went through 2 gas pumps already. The motor was replaced for one on a 1997 tahoe cause the original motor needed some work. Now my problem is the torques holding the starter, they keep breaking and stalling me every other month. Please help me.
Apr 17, 2010 (12:00 am)
Ok, I think I know why my torques on my starter keep breaking. What I need advice on is, my ignition switch. When I try to start my truck in the morning or all through the day, it does'nt start on the first try all the time. Sometimes I have to put it on Neutral or open the ignition switch 4 times before I try to crank it. When I do crank it, it makes a grinding noise or as if the starter had slipped and was just turning fast with no cranking. You think it might be the ignition switch?