Heater core diagram 97 caddilac seville

SOURCE: how to replace a heater core out of 97 buick skylark

There is a free way to find out where it is which is what you'll have to do first, go to any parts place which should have a diagram or they can just tell you over the phone. i will tell you this, hope that it's on the passenger side because if it's on the driver side you will need to pull the dash to get to it. If it's on the passenger side like the blower motor you can just drop the glove box door down to get to it. It looks like a little box woth two or three small hoses or pipes going to it which are failrly easy to disconnect. Hope this helped, good luck!

SOURCE: removing/replacing a 2000 kia sportage 4x4 4 dr heater core

The heater is located under the dash board to the right and down from the radio. To remove and replace it you will have to remove the dash board down to the fire wall. Also, you will have to disconnect two hoses that connect up to it from the engine compartment. These are located in the back of the engine and down on the firewall about midway. Once you remove the dash board and locate the heater core you will be able to see the location of these two hoses. Removing the heater core is time consuming but it will save you about 700 dollars.

SOURCE: replacing heater core

1. Allow engine to cool and release pressure from system, then disconnect heater hoses from heater core tubes, and plug hoses.
2. Working in passenger compartment, remove glove compartment assembly.
3. Remove seven screws attaching the heater core access cover to plenum chamber.
4. Disconnect vacuum lines, then remove the cover with the vacuum harness attached
   1. Remove heater core from vehicle, Fig. 20.
   2. Reverse procedure to install.

SOURCE: 97 gmc heater core diagram

the hoses end at the firewall to the best of my knowledge. They have to be serviced from the engine compartment. The heater is another matter. Many of the old GM Truck products could have the heater replaced without pulling the dashboard. I would go to the local parts store & buy a repair manual on that truck for about $25 then check your hoses, then check the heater core. you can always by-pass the heater core by splicing the 2 heater hoses together with a $3 plastic hose repair kit & a couple of hose clamps. as long as the hoses are long and supple enough & not short or stiff & cracking. you can actually hear old hoses crackle when you pinch them between thumb and forefinger gently. replace as needed