Step by step Instructions for 97 blazer heater core

Hi without knowing the exact routing of the heater hoses, it seems quite obvious there is a leak in the cooling system to the heat exchanger (on the inside of the cabin). Generally you could find it behind the dash. Just an advice recheck the coolant level to avoid further damage before repairs are done.

how long does the heater core take for a 98 chevy blazer

For heater core replacing procedure.I suggest you to go through this related help links.Its all complete step by step procedure :----How to replace heater core for All car models?

Click the link below:---

http://technoanswers.blogspot.com/2011/11/how-to-replace-heater-core-for-all-car.html

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How to Flush Heater Core?

http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html

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How to Remove Heater Core ?

http://howtobyme.blogspot.com/2011/12/how-to-remove-heater-core-on-2008-honda.html
Heater Core Replacement?

http://howtobyme.blogspot.com/2011/12/honda-heater-core-replacement.html

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To replace heater core? http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on.html------ How to replace heater core? http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on_10.html
----------This will help.Thanks.

All the information I've ever found about the heater core in a Mercury Tracer say's yes. You must remove the whole dash and everything to get to it.
I hear that the Haynes repair manual for that car has a good step by step set of instructions for doing it. good luck.

Heater Core Removal & Installation To Remove:
Heater core removal

1. Remove the heater/vent module.
2. Remove the heater core access cover screws.
3. Remove the heater core access cover.
4. Remove the heater core from the heater/vent module

To Install:

1. Install the heater core to the heater/vent module.
2. Install the heater core access cover and screws to the heater/vent module.
3. Install the heater/vent module assembly to the vehicle.

Hi:
I have changed out a heater core on a Blazer like yours and while it isn't extremely difficult, it is quite a job, as you need to remove the dash to do so.

If you need some guidance, I would suggest that you spend about $20 and get a subscription to :
www.alldatadiy.com

It helped me on all of the cars that I had, and has step by step instructions, as well as printable diagrams and pictures.

advance has a brochure that will help or you can buy a hayes or chilton repair manual from their and it will give you step by step instructions with illistrations.

buy a haynes repair manual for your vehicle

get yourself a manual u will need it to remove the entire dash assembly with frustrating yourself to death, this is a 12-15 hour job for a DIYer, done many, they are a pain.

try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you