Question about 1994 Chevrolet S-10 Blazer

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Trying information on a 1994 chevy s 10 blazer tahoe edition

Trying to see if you can replace the part that the hose from the heater core goes into on the engine

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  • stephanien Dec 09, 2008

    thank you very much that was what we thought but were not sure thank you skip8303

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Yes you can ... you can from the chevy dealer and i think autozone has them.before you try to remove spray with P.B. Blaster its like wd40 but works alot better ...sometimes this piece snaps off at thetheads when you try to take out..

Posted on Dec 09, 2008

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3 Answers

I bought a 99 tahoe four door 5.7 350. No heat. Previous owner bypassed heater core. Need to see how heater hoses attach.


Have you replaced the heater core? If not, most likely the reason the previous owner bypassed the heater core was because it leaked. I will be happy to send you photos of how the hoses attach but I will need your email address.

Dec 21, 2014 | 1999 Chevrolet Tahoe

1 Answer

Vaccum hose missing at the T found the one for cruise control cant find where missing one goes could it go to heater??? where do i look??? 1994 chevy blazer s 10 v6


Could be ,think that line runs thru the firewall with the main wiring harness.Small diameter hard plastic line
Looks alot like a wire so look closely .

Sep 15, 2011 | 1994 Chevrolet S-10 Blazer

2 Answers

1994 chevy blazer s 10 size vaccum hoses at


There should not be an open vacuum hose. Look around it for a place it may have come off of. If there is enough play, you can trim a quarter inch of the end, if its stretched out, and replace it back on its fitting. If you really cannot find where it goes, just plug the end with somthing till you figure it out. A small screw, or similar usually works.

Sep 15, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

My 1994 Chevy Blazer S-10 is not blowing out any air when I turn the heater on...


Is the fan turning on? I assume so.. when you change the hot/cold selector do you hear the flaps inguage? could be the linkage there. Otherwise, check your coolant level - make sure your heater core isn't plugged (let engine heat up, then see if the heather both heater hoses going into the firewall are warm). If one is colder than the other, flush the heater core.

Jan 23, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

How do I take out replace the heater coil in my S-10 Chevy truck?


No you do not, I think you mean the heater core, because its leaking, first unhook heaters hoses under hood (there may be a clamp on the core tubes that has to come off), next go under dash on passengers side, take the one bolt to the far right under dash by the dome light, thats so you can pull the dash out just enought to get the cover off the front of the heater box, behind that cover is the heater core, now that cover is held on with about 6 1/4 inch screws give or take 1 or 2 when you get the cover off you will see 2 straps, one on each end that hold the core in place, there are 2 1/4 screws in each one, remove them and core will come out. Put back together in reverse order.

Jan 01, 2010 | 1994 Chevrolet S-10 Blazer

1 Answer

1994 Chevy S10 Pick-up 4 cylinder, sloshing noise, no heat......is this a heater core problem?


no heat on this old of a vehicle definitly can indicate a heater core problem. sometimes flushing core with a hose can save heater core sometimes it will need replaced. make sure all coolant is properly disposed of if u flush core yourself

Nov 07, 2009 | 1995 Chevrolet S-10 CA Edition

1 Answer

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


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!

Feb 21, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Replacing a heater core in 94 chevy blazer


its not hard to do just time consuming.you have to take the venting out below the center o the dash inside to get to it to get it loose and then you have to get under the hood and take the two hoses loose so you can change it out

Jan 17, 2009 | 1994 Chevrolet S-10 Blazer

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