0
It is a pretty big job. Get a shop manual from auto zone or AUTOBOOKSONLINE.COM
This requires the removal of the: Glove box, stereo, heater controls(cables), gauge cluster, head light switch, ashtray.. and basically anything else needed to remove the dash. The Core is buried in the heater box that can only be accessed with the dash removed.
Walkthrough With PicturesThe above states that basically the entire dash has to be removed to access the heater core. This is true of the second generation (new style) S-series vehicles, but not of your first generation (old style) vehicle.See the Related Link for "Heater core replacement procedure." below for the walkthrough with pictures.
*Added Comment* The above statement is true. The older style does not require the whole dash to be removed. I have changed the heater core in my 1991 S10 Blazer and it is still quite a job. You have to remove the radio to access a couple screws to the heater core cover. Also if you open the glove box you will see an access cover that is secured with one screw. Take the screw out and pop the cover and you will have access to a couple more screws to the same cover. The rest of the screws can be accessed under the dash. Once the cover itself is removed you will have access to 4 screws that hold the two straps. Once those are removed you can remove the straps and the heater core. Make sure you have disconnected the rubber lines from the heater core first! These are under the hood right under the blower motor and beside the HVAC cabin. Reverse for installation. - jedgell233
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Replace heater core in 1997 Chevy blazer?
how to replace a heater core in a 1997 Chevy blazer
How do you replace a heater core in a 2001 Chevrolet Blazer?
how do i replace a heater core in a 2001 Chevrolet blazer
How do you replace the heater core on a 1996 blazer 4door?
with your hands
How do you replace heater core in a 91 Chevy truck?
replace heater core in a 1991 Chevy work truck 1500
How do you replace a heater core in a 1994 Chevy Blazer S10 with AC?
Drain the water from your 1994 Chevrolet Blazer cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
How do you replace heater core on 1991 caviler must you remove dash?
no
How do you remove and replace a heater core on a 1991 Ford Crown Victoria?
The dash has to be removed to gain access to the heater box. The heater box then comes out and is split open to replace the core.
How do you replace a heater core on a 1991 Camry wAC or is it insane to try for a backyard mechanic?
how to fix 92 camary heater core
Can you cut through the firewall to replace the heater core in a 2000 Chevy blazer?
You can but you still won't be able to get it out.
How do you replace a 1991 dodge Dakota heater core?
Drain the water from the cooling system. Remove the water hose from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
How do you replace the heater core in a 1991 Ford Explorer?
Answer replacing the heater core on a 1991 explorer is a simple job and takes around 30 minutes. disconnect the hoses from core in engine bay. remove access cover located below the dash on passenger side. remove core, replace core.
Why do i get a Water swishing sound when you accelerate 1997 blazer?
your heater core is going out, you need to replace it before it ruptures.
