Yukon will start with remote but after key is turned and my foot hits the brake the truck shuts off. It also will not start with key, there is power when key is turned but nothing-no cranking. this is intermittent and just started.
Anti theft not recognizing key, possibly worn out. Try spare key if you have one or have a new one cut and recheck.
Testimonial: "I tried the spare key and it does the same. If I turn the key to the first position-stop- the next-stop then all the way it seems to start."
SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.
Sounds like the fuel pump is shorted.
SOURCE: '98 Yukon - Cold Start Issues (not battery)
THIS SOUNDS LIKE THE FUEL PUMP PRESSURE MAY BE DROPPING OFF AFTER SHUT DOWM, THERE IS A FUEL PRESS CHECK VALVE BUILT INTO THE FUEL PUMP TO PREVENT THIS, U WILL NEED TO DO A FUEL PRESSURE LEAK DOWN TEST, IT SHOULD NOT DROP MORE THAN 5 PSI AFTER ENGINE IS SHUT OFF, IF IT DOES THE PUMP MUST REFILL THE FILTER AND SUPPLY LINES WITH FUEL THIS CAUSES STARTS AND STALLS AND LONG CRANK TIMES.
SOURCE: 2003 yukon xl loses all power while driving(SHUTS OFF)
Sounds like your fuel filter need's to be changed. Start with that and good luck.
SOURCE: 2007 yukon xl battery dead recharged battery will
We had the same issue with our 2007 Yukon Denali XL. Died on us twice after sitting for short periods of time; once we watched a DVD with the engine off and battery died within 10 minutes. The dealership kept it overnight to troubleshoot why the battery died so quickly. They said the radio was "pulling" too much from the battery. (They supposably fixed it) But again a few days later the battery died again after sitting overnight. We brought it back to the dealership and they brought in a GMC "expert" to replace the entire DVD/CD/Navigation system. They also replaced our battery with a much larger battery, similar to the ones that GMC puts in there diesel trucks. They had our Denali for 5 days, but it appears to be fixed now.
Getting it fixed correctly wasn't without headaches, but it was all covered under warranty, including the battery. And they are updating the nav w/ the new edition disc as well for no charge.
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I tried the spare key same condition. If I turn it to the first position then the second then all the way this seems to work.
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