2000 Chevy Silverado 5.3L fuel pump issue?
My truck would not start. I assumed it was a bad fuel pump since I didn't hear it operating when key was turned on.
I measured the voltage at the engine control center 'prime' terminal and also at fuel pump connector with ignition switched on. Looks good for 2 seconds as expected for the prime.
I replaced the fuel pump. New pump sounds like it is working (comes on for the 2 sec prime). The truck still won't start. I repeated this many times: switch ignition on and off to help prime the system.
Also replaced fuel filter. I checked to see if there was any fuel pressure at the fuel rail. Just a little came out. I disconnected the fuel line at the pump and connected a hose directly off the fuel pump and nothing was coming out. I got another fuel pump (same manufacture) assuming I received a bad one. The same thing. Used some starting fluid - truck turns over a second or two until fluid burns off.
I used a fairly inexpensive one from 1Aauto $105.
Any other ideas on what I can test to verify a fuel pump issue.
Register today for free or log-in if already registered to remove this ad!
from what you have tested I would say go buy a A/C delco fuel pump.
04 suburban leather loaded
Supercharged 9 psi boost
Electric fan conversion
Triple pillar mount with gauges
Summer tires - 20 inch chrome with cooper H/T plus
Winter tires - stock rims with Bridgestone APT
Energy suspension kit
Air bagged rear end
Prodigy p3 brake controller
Your vehicle can go as fast as you wallet will let it
Buy a hybrid I need your gas
As always, Drive it like you stole it
Contact dealer for most current part and price information.
Above is straight out of the factory manual. If you are only paying $105.00, it can not be very good. As long as you have power and ground to the pump the problem has to be the pump. I recommend a better pump preferably Ac Delco.
ASE Master Tech, L1 Advance Engine Performance certified
I will not answer repair questions by PM, if you would like my input you can PM me and ask me to reply to your public thread.