Yukon

Tiny
ALBONILLA2
  • MEMBER
  • 2002 GMC YUKON
  • V8
  • 2WD
  • AUTOMATIC
  • 175,000 MILES
My yukon wont start I tried jump start it but didnt work
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Sunday, December 19th, 2010 AT 1:45 AM

1 Reply

Tiny
RASMATAZ
  • MEMBER
If its cranking over and w/n start do below

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it
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Sunday, December 19th, 2010 AT 1:57 AM

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