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heater core replacement

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by therover87, May 17, 2002.

  1. therover87

    therover87 1/2 ton status

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    i have an 87 k5 350 tbi and i was having a problem with losing anti freeze and after looking over the truck realized that my heater core was no good,so i will need to replace it and was wondering how difficult this is and how much a new one would cost, thanks.
     
  2. Blue Meanie

    Blue Meanie Registered Member

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    where exactly was it leaking from? i have an 87 1/2 ton with the 305 TBI and am having the same problem. i couldn't find any leaks so i came to the conclusion that i had a cracked head or a blown gasket ( well, thats what i had to tell the wife to get the 350 i wanted). was it leaking in the cab??
     
  3. Thunder

    Thunder 3/4 ton status

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    Click Here: <a target="_blank" href=http://coloradok5.com/heatercore.shtml> Heater core replacement</a>

    New ones range from 39.00 to 69.00
     
  4. FatBoyBlazer

    FatBoyBlazer 1/2 ton status

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    they are 20 at autozone and advanced at 27 at pep girls
     
  5. 90K5

    90K5 1/2 ton status

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    mine was 20 at O'reilly's
     
  6. spoolnaround

    spoolnaround 1/2 ton status

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    I replaced the one in my 74 the other day. I have air tools and no interrior it took me less than 2 hours.
     
  7. NITRO

    NITRO 1/2 ton status

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    its a pain in the a$$. took me about 4 hrs. good luck

    NITRO
     
  8. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    I just priced them at AutoZone yesterday. $24.95. Lifetime warranty.
     
  9. 90K5

    90K5 1/2 ton status

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    Its really not that bad, just make sure you have time and are patient...might wanna replace the heater hoses while you are at it, just so you don't have to worry about them later on.
     
  10. wheelnut46

    wheelnut46 1/2 ton status

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    You just reminded me - it was by replacing the heater hoses on mine that the heater core died. The hoses were SO stuck on the inlet and outlet, even though I sliced the hoses down the length to make them easier to remove, the inlet and outlet tubes carcked where they are soldered to the core. That was it. New core - no worrys.
     
  11. 90K5

    90K5 1/2 ton status

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    my old hoses were also stuck on there really good. One reason I got new one. Had to cut them down and ended up pulling the ends of them through the firewall anyway.
     

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