Question about 1999 Chevrolet Blazer

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I want to put a new fuel pump in my 99 blazer, How do i get the fuel out? It has a full tank of gas.

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You can use an inline fuel pump, syphon, or if it is still working dilconnect the fuel line and hotwire the pump, but place fuel in a safe container

Posted on May 07, 2010

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2000 blazer will not start with less than 1/2 full of gas


i am not 100% sure the fuel pump is located on the top 1/2 of the tank so it need about 3/4 tank of fuel to breath.

Mar 18, 2013 | 2000 Chevrolet Blazer

1 Answer

My 1996 chevy blazer won't start. we changed the the fuel pump, fuel pump filter checked the relay and she turns over once we put gas in the carb. body. help please


Have you ever put in the gasoline tank any injector cleaner yet because the cleaner will unclog the injectors so full amounts of gasoline can get into the piston chambers the right amounts so try putting injector cleaner into your gas tank. When you put this into the gas tank to remember that it takes time for the cleaner to get to the injectors so you might have to keep trying to start the vehicle many times for the cleaner to unclog the injectors. This will not hurt your vehicle at all so go try this.

Jun 11, 2011 | 1996 Chevrolet Blazer

2 Answers

I need to remove the fuel pump from my 99 chevy blazer , is there an access panel or does the fuel tank have to dropped?


  1. Properly relieve the fuel system pressure.
  2. Drain the fuel tank.
  3. Support the fuel tank.
    1. Remove or disconnect the following:
    2. Negative battery cable
    • Filler neck from the tank
    • Shield from tank and tank straps
    • Fuel lines and vapor hose from pump
    • Electrical connection from fuel pump
    • Fuel tank
    • Fuel pump/sending unit assembly by turning the locking ring (located on top of the fuel tank) counterclockwise using a spanner wrench
    • Fuel pump from the fuel lever sending device
  • To install:
    Install or connect the following:
    • Fuel pump in tank with new seal around opening

    NOTE The fuel pump strainer must be in a horizontal position when the fuel sender is installed in the tank. When installing the sender assembly, make sure that the fuel pump strainer does not block full travel of the float arm.


    • Tank and connect fuel lines and vapor hose
    • Tank to the frame. Torque the fasteners to 33 ft. lbs. (45 Nm).
    • Shield
    • Fuel filler neck and clamp
    • Negative battery cable
    1. Refill the tank.
    2. Run the engine and check for leaks.
    6207c87.gif
    View of the in-tank fuel pump assembly

    Oct 13, 2009 | 1999 Chevrolet Blazer

    1 Answer

    Chevy Blazer won't start; fuel pump needs replacing


    Before spending several hundres on a fuel pump, I recommend doing a fuel pressure test. You can get a test gauge pretty cheap at a parts store. If the pump is junk, you raise the truck, lower the fuel tank, unplug the electronics from the pump at the top of the tank, then with a hammer and flat head scrwedrive, gently tap the lock ring in a counter clockwise direction until it pops off. Pull the pump assembly out and install the new one. Reverse directions to install.

    Jun 02, 2009 | 2001 Chevrolet Blazer

    3 Answers

    99 blazer no start


    it is definitely the FUEL PUMP or FILTER then ;-) - or a blockage in the line.
    I have heard it said that when the Chevy fuel pump goes, it self destructs and may leave (clogging) pieces in the tank (ugh)
    Pump is IN the tank, so be extremely careful if you try to fix yourself. Fuel filter us UNDER the tank and cost $11.99 at Walmart.
    My pump makes noise when I turn on the Key (but not starting) and so I thought it was OK too... but a Pressure check at PepBoys showed it LOW. $351.00 to drain, clean and replace pump. (another ugh) so I toodled over to Wal Mart, bought a Fuel ffilter for $11.99 and swapped ourt (pay attention to the ARROW it must point towards the FRONT of the car ;-)

    Mine was full of coffee-like tar sticky stuff, so a quick change, new clamps (Use SSteel as these will not rust) and Bang, I was OK again.

    CLAMP the fuel line coming in from the tank with 2 pieces of wood and a VVise-Grip pliers or C_Clamp. Don't want a face full of gas. Do the same on the ENGINE side of the filter.
    Looen the 2 hoseclamps or twist them to break of rusted, and spen some time prying off the old hoses. Put a box full of crumpled newspaper or shredded stuff *sawdust works too) under the filter (on the ground) to catch the fuel or goo that will run out of there when the hoses pop off.

    I took off the clamp on the Engine side, and let the fuel from the engine run out into a jar and it was uckky goopy brown too, but the last was clear so I let it drip out. After I wiggled the hoses and pried the old one off, I loosened the 3/8 nut and bracket and slid the OLD one out, and put the NEW one in. Then I put dishsoap on the nipple of the NEW filter and inside the old hose and pushed it on, then put on the hoseclamp and screwed it down tight. I then reattached the front hose the same way, put on the clamp, and now I had a new filter on the car. I still suspected I'd have to swap pumps.. but it was a $12.00 chance I'd definitely recommend to anyone ;-)

    Make sure clamps are on RIGHT and hand TIGHT, hose on all the way and both clamps 1/4 inch from filter body, then take off the tank side Vise-Grip or C_Clamp and look for leaks. OK?

    Then take off the ENGINE side clamp and look for leaks. OK?

    Now go turn on the key so you hear the pump, let it stop making noise, and turn key OFF. Do this 20x to get fuel into the engine again. Then PUMP the GAS pedal 3x, hold to floor and start the car. As soon as it goes, slowly pump the GAS pedal and keep it running, but not RACING the motor!, and get it to idle again by itself (all air out of the fuel line)

    Now go back and look for leaks. If there are any, STOP the motor and tighten clamp(s) just a bit. You dont want the clamp to CUT or CRUSH the hoses, just hold them tight.

    Well Done!!

    Mar 27, 2009 | 1999 Chevrolet Blazer

    1 Answer

    Gas gauge in 99 chev blazer


    sorry, but there is no real economical way. the only way is to change the fuel pump and they sell 2 different kinds of units, one that is 2 parts and the whole thing and it runs from $200 to $380. since the fuel pump still works i would just meter my mpg till the fuel pump goes out.

    Feb 21, 2009 | 1999 Chevrolet Blazer

    1 Answer

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    I have the same problem on my 99 ZR2 Blazer. This is the rheostat in the gas tank. I bought my part in Ebay for $27. The only issue is that you have to drop the gas tank and pull the sending unit to install. Hope this helps, I hear from other message boards that it is a very common problem in these vehicles.

    Jan 28, 2009 | 1999 Chevrolet Blazer

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