Question about 2000 Chevrolet Blazer

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2000 Blazer S-10...Changed the sending unit,pump,relay,checked wires. Had power then reinstalled the tank-no power again. Even rechecked the whole system over and a lost for ideas??!!??

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It sounds like you have a wire with a short. When you have it down on the ground and connected it works but when you change the position of the wires you lose the connection. Use a thumb tack and penetrate the wire cover 2 to 3 feet back and see if you still have voltage, if you do repeat the process 12 inches back, if you still have voltage then 6 inches until you find the spot where you lose voltage. the break will be between the last point you had voltage and where you lost voltage. It's all a matter of isolation. Good Luck.

Posted on Sep 09, 2009


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Fuel gauge stays on empty even when I fill the tank

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Mar 18, 2011 | 2000 Chevrolet Blazer

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Is there a fuel pump reset switch on the blazer?

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1 Answer

2000 Blazer Will not stay running

Wow, you seemed to have changed what I would have recommended to someone in your shoes.

If the fuel pump relay is hot, I think that there could be a crossed wire somewhere.

I would take it to an auto electric shop to diagnose problem if it's worth putting more money into it.

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I own a 2000 chevy blazer with a 4.3 v6 vortec. It will turn over but not start up. I replaced the fuel pump, the fuel filter, the plugs and wires, and the pressure regulator. If i dump a little gas in the...

did you check power and ground at the fuel pump connector?there should be power at two wires at the connector,one should have constant power with the key on and thats for your fuel gage,the other power wire should have it only when cranking or for about 3-5 seconds when the key is turned on,check both of those first and that will let you know that everything is fine all the way forward of that connector,also did u replace just the pump or the whole sending unit?if you just replaced the pump the connector that runs fron the sending unit to the actual pump itself inside the tank also goes bad on this setup too,look for brown or burn marks on the inside of the sending unit where this connector hooks uo,hope this helps

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1 Answer


most of fuel pumps were in tank, wire corrodes is harness under right front seat floor pan to tank
if fuel pump buzz is heard and car runs and when it doesnt run you cant hear the fuel pump try
turn ignition off wait 10 seconds
turn ignition to on position to (prime or hear pump buzz)
no buzz fuel pump not working check fuel pump relay(swap with another) and try again?
you could use test light to pump wiring and make sure your getting power to pump on this prime test no power relay or wiring problem.
power at pump, but no buzz fuel pump faulty

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Where is the fuel pump located on a 1994 chevy blazer

it is located in the fuel sending unit at the top of the tank. You have to remove the tank to get to it.

Jun 10, 2009 | 1997 Chevrolet Blazer

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Apr 11, 2009 | 2000 Chevrolet S-10

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