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  1. T

    99 Yukon wont start

    Thank you all for your responses. YIPPIE!!!!! I finally got it started. The code kept saying crank sensor. So I replaced it - twice as a matter of fact. The WIRING HARNESS was the issue. There was a short. Replaced it - and it cranked. THANK YOU ALL!!!! I'm not a real mechanic...
  2. T

    99 Yukon wont start

    Verified the crankshaft reluctor ring was in place. It still wont start. I am so frustrated now. My last resort is to tow it to the dealership. What makes me so sad is the truck was running fine - no problems, no issues. It wasnt smoking or using a lot of oil or any issues that most...
  3. T

    99 Yukon wont start

    Yep, made sure the timing marks on the crank gear and cam gear were lined up when the timing chain was installed.
  4. T

    99 Yukon wont start

    I cant get my 99 Yukon with 340,000 miles to start after installing a new timing chain. Checked the fuel pump relay, distributer, and crank sensor. All seem to be working fine. Only thing I can figure is the security system shut down. About 5 yrs ago someone tried to steal my baby and...

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