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Changing Fuel Pump And Sending Unit

Discussion in 'The Garage' started by blazerguy 90, Oct 9, 2005.

  1. blazerguy 90

    blazerguy 90 1/2 ton status

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    I need to change the fuel pump and sending unit on my 90 Blazer, how hard is it to do ?, ive never done anything like this before, is this something I can do in my drive way in a day ???.
     
  2. shawnboy

    shawnboy 1/2 ton status

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    Toronto, Canada, eh.
    It6's really not too hard at all but you do have to remove the gas tank.
     
  3. tiger9297

    tiger9297 1/2 ton status

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    NOT a fun job. Did it on my '90. Yes, the gas tank has to come out. grrrrrr
     
  4. 4xcrazy

    4xcrazy 3/4 ton status

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    hope the tank is nearly empty, easier thay way :doah:
     
  5. badfish4tail

    badfish4tail 1/2 ton status

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    I did it the lazy man way and did not drop the tank.
    I made a access panel in my bed, then i had to bondo the top.
    After putting the herculiner on it doesnt stand out at all.
    But if i had a chance to do it again i would have dropped the tank and do a shackle flip at the same time :crazy:
    added two pics of bondo fix before herculiner

    patch.JPG

    patch 2.JPG
     
  6. chevyjeff

    chevyjeff 1/2 ton status

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    I also cut a 12"X6" access panel in the back of the blazer to get the sending unit out. It was a lot easier the dropping a 3/4 full tank, reciever hitch and flatbacking it by myself. I used a sawsall blade that i cut down to be 2" long as not to cut into anything vital, then tacked some tabs a remounted the cut out plate w/ some screws.
     
  7. badfish4tail

    badfish4tail 1/2 ton status

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    :eek1: Your pretty brave with a sawzal, I used a dremul :D
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    You might be able to repair the sender depending on what the problem is, fixes have been posted to the board before. The senders are quite pricey.
     
  9. blazerguy 90

    blazerguy 90 1/2 ton status

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    Thanks guys, when I got my Blazer the sending unit was bad, now I think my fuel pump is starting to go out (149000 miles) so its time to replace both. I got the sending unit from LMC Truck, it was 99.00 dollars, I got a new fuel pump for free so this isn`t costing me as much if I would have had to by both parts.
     

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