Mechanics

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2001 GMC C2500

Engine Mechanical problem
2001 GMC C2500 V8 Four Wheel Drive Automatic 83157 miles

I crank the starter for 5-10 secs then stop then turn the key and truck fires right away. Changed chassis mounted fuel filter and can hear fuel pump working when just turn key on
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Colinnevada
January 28, 2010.



Check the fuel pressure. By the description given you should have good fuel pressure when running but when you shut the vehicle off if the fuel pressure drops to zero. You have a faulty fuel pressure regualtor. Which is part of the fuel pump assembly. Inside the tank

Tiny
Tooomanytoys
Jan 28, 2010.