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Removing heater core

Discussion in 'Chevy Trucks' started by JTChevy, Jul 28, 2002.

  1. JTChevy

    JTChevy Junior Member
    Messages: 15

    I'm trying to replace my heater core in a "77" 3/4 ton 4x4. I have no experience in this area. How does one go about removing the heater air distributor mounting screws on the bottom. I guess they go into the engine comparment, but I can't fine the two bottom ones. Any ideals? Thanks James.
  2. Dan S.

    Dan S. Member
    Messages: 31

    When I changed the heater core in my 76 3/4 4x4 I removed the inner fender to get to the lower bolts holding the housing to the fire wall, after that fender is out of the way it is fairly easy to change out the heater core.
    Have fun!
  3. russ130

    russ130 Senior Member
    Messages: 204

    Yeah my 78 has nuts on the inside of the cab on the bottom of the heater core housing. Be careful not to break off the studs. ;)
  4. cj3859

    cj3859 Member
    Messages: 44

    can be done

    i know it seems impossible but you can reach the bolts,i've done it with a dog bone one flat at a time,good luck and alot of patience