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Fuel Pump Not Getting Power

gmchevroletruck

By gmchevroletruck
in Ask A GM Technician

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gmchevroletruck Enthusiast

gmchevroletruck

Posted
Posted

Ok, so I would just tow it to the dealer but I'm literally out of money. Put a brand new fuel pump on, still no buzz sound when key on, no start. Swapped relay from another one under the hood that is good, still no start. Please help. Truck turns over, just doesn't fire.

 

2002 Silverado 5.3

ffthornton Enthusiast

ffthornton

Posted
Posted

The best thing to do is check to see if power is getting to the feul pump with either a voltage tester or a light tester. Then trace back till you find the prolblem. Also check the ignition switch.

dwags Enthusiast

dwags

Posted
Posted

Check the ground. When I replaced mine, there was a ground strap attached to the frame next to the tank that was corroded. Removed the screw, scuffed up the frame and reattached it and it solved my problem. Don't know if this will help but I thought I'd put in my two cents.

 

Dave

TexasAl Enthusiast

TexasAl

Posted
Posted

Like others have said, check the fuses. If the computer fuse is not working, then the fuel pump will not get a signal to work. Also, remove the relay, and check for power. The relay will usually tell you what terminal has power. If all looks good, then jump the terminals with a pair of pliers, and see if that works. If it works, then the computer is probably not sending the signal to the relay.

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