Question about 1994 Chevrolet S-10 Blazer

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I need information on how to replace the heater core in a 1994 chevy tahoe blazer

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  • midnite owl Feb 27, 2009

    looking at my heater core in 94 jimmy maybe doing the same thing

  • Clint Smock
    Clint Smock May 11, 2010

    On 1994 you don't have to remove the whole dash. Is this a Full-size blazer or a s-10 blazer

  • yadayada
    yadayada May 11, 2010

    This requires the removal of the: Glove box, stereo, heater controls(cables), gauge cluster, head light switch, ashtray.. and basically anything else needed to remove the dash. The Core is buried in the heater box that can only be accessed with the dash removed.

  • shaggy14444 May 11, 2010

    email me on this and we will see if I can help. shaggy14444@yahoo.com

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This isn't as much a solution as it is a bandage.
But, I akso have a 94 Tahoe Blazer and my heater core was messed up, so I bypassed it. It was filling the cab with anti-freeze vapors, not good. So, I cut the two hoses coming from the heater core, (located right behind glove box under hood) one hose goes from this rounded black piece of metal to the radiator, and the other goes straight into the engine block. if you cut them at the place where they enter the engine from the glove box (area), and bind them together with a smaller metal flanged (on both sides) pipe, insert flanged edges inside each hose, and use the clamps that you tighten with a screwdriver on both sides of the bound hoses. (sorry, not mechanically savvy) So, when you're done, the hose from the radiator goes straight into the engine. It solved my leaky anti-freeze leak, and no more anti-freeze fumes! It's been 3.5 months and no problems have arisen with the two hoses bound together. Hope that helps!

Posted on Mar 10, 2009

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