No warning lights on dash , won’t stay running

1999 GMC YUKON
123,000 MILES • 5.7L • 4WD • AUTOMATIC
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BRUCEARD21
  • MEMBER
  • 1 POST
I have a 99 gmc Yukon Denali. I turned key on and no warning lights on dash it will crank and run for 2 seconds then dies out. Checked fuses and changed fuel pump didn’t help. Any help would be greatly appreciated. Thanks
Jul 26, 2026 at 1:52 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Hello,

You said you checked the fuses but did you check for power on both sides of the fuse? If you have a main fusible link out or there is a power supply problem at the fuse panel we need to know this first, here is a guide to help, do the test with the key on.

https://www.2carpros.com/articles/how-to-check-a-car-fuse/

Please go over this guide and get back to me.




Jul 26, 2026 at 5:49 PM
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