Do I have to take out the dash to replace the under the dash heater coil?
I have a 1994 S-10 LS Body Chev 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.
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Almost. unbolt the steering column and rest it on the seat, covered with a towel. unplug everything you can find, leave the wiring harness on the driver's side alone. unbolt the dash. be sure to have a hand at this. because you can forget things. swing the pass side back and rest it on the seat and you now have access to the heater box.
need to replace it without tareing apart the dash
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