Mechanics

01 WONT START.

2001 GMC Yukon • V8 2WD Automatic • 200,000 miles

01 yukon Will not start. It turns over good but wont crank. Every once in a while it will crank and the shut back off after a few seconds. Like it just uses the gas in the fuelpump/lines then shuts off. I was thinking it was a relay. But I have changed them.


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Sleeze
July 26, 2011.



There are a series of tests for isolating the root cause but I would jump right to a fuel pressure gauge. This truck requires a minimum of 55PSI to run and fuel pumps fail often.

Wrenchtech
Jul 26, 2011.