Heater core or Heater hose?
I have a 91 blazer 4.3l 4x4 4 door
I have a slight problem, a few days ago i noticed a leak in my interior.
Okay no big deal till i realised it was antifreeze.
it was fine till i washed my truck, the way i see it theres 2 things that could be wrong.
Accidentaly Disconnected the heater hose inside when i washed my engine compartment out or
the heater house is gone. Either way i cant get at it?
any tips or tricks i need this done asap.
Thanks.

 

I found it to be easy. Check here I have a link in there that will help you.

 

The hardlines on the heater core protrude through the firewall. Meaning you can see if the issue is a heater hose being disconnected from the engine compartment. Most likely the problem is the heater core itself is leaking. As far as replacing the heater core, there are far worse vehicles than 1st gen Blazers. Patience is the only skill required.

 

Allright thanks every one. So its most likley i have a leak in the heater core but a small chance i accidentally lossened up the line when i pressure washed it...
this seems to be a bit more of a weekend project.
Thanks for the advice.

 

yea your deffinitly looking at a leaky heater core not a hose good luck with the repair

 

Thanks Every one i have gotten enough info to know what im looking at here.
Heater core is in so i just have to pick it up...i got a weekend project yey lol.
Thanks again.

Blazer_Boy

 

Sucessfull repair...next time ill get it done...

 

Good job. What was the worst part for ya?

 

Worst Part by far was getting the dash apart. Heater core it's self was a breeze