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Heater Cores and Blower Fans

How do you replace a heater core in a 1991 gmc suarban?


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2015-07-15 21:18:03
2015-07-15 21:18:03

Well first of all put your car up on ramos and find out where your heater core lines go into the fire wall. More than likely its in the middle of the firewall which means its in the middle of the dash and you will have to remove the complete dashboard to get to it. I have the same thing with my 1993 Chevrolet Beretta. The heater core went out in it and in order to get to it the dashboard has to be completely unbolted not necessarily pulled out of car. You will have to unbolt the steering column to do this and let it drop till it stops on its own. I know the book time for a mechanic to do the job is like 14 or 1`5 hrs at about 50 bucks an hour for a $23 part. Do the math if you are mechanically inclined at all do the work your self and really you should not have to damage anything to do the job. Just rememebr how many bolts you take out and where they go. The worst part of the job is actually getting the cover off to the heater core. Mine was a pain there are so many bolts holding it up and just when you think they are all out the cover is still stuck on there and you find another bolt hidden. Goodluck in your adventure becase that is what it will be.

To replace the heater core on 90-91 grand am ,you have tocompletely remove the center console. And do'nt forget to remove the 90degree elbow that is attached in engine compartment on firewall,[in case core goes out]or it will be broke

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replace heater core in a 1991 Chevy work truck 1500

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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.

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