# Remove heater core box it’s stuck

**URL:** <https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, heating, blazer, repairs\
**Created:** [January 9, 2022, 8:05pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742 "2022-01-09T20:05:01Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Twinflame15\_178781](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@Twinflame15\_178781](https://community.cartalk.com/u/Twinflame15_178781)\
**Post date:** [January 9, 2022, 8:05pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/1 "2022-01-09T20:05:01Z")

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I’m trying to replace the heater core on my 98 blazer.

I have removed the whole dashboard I’m down to the heater core but can’t get separated. I have removed 5 bolts around it why won’t it separate I can’t get it apart how do I pull it off I been trying to do it for awhile now can’t get the box off to replace the heater core.

Any suggestions would be appreciated

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [January 9, 2022, 8:11pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/2 "2022-01-09T20:11:47Z")

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Are the hoses removed from the other side of the firewall?

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**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [January 9, 2022, 8:12pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/3 "2022-01-09T20:12:21Z")

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I dunno but this is the kind of detail you get in a factory service manual or one of the on-line services.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [January 9, 2022, 8:12pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/4 "2022-01-09T20:12:55Z")

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[![](https://global.discourse-cdn.com/cartalk/original/3X/d/9/d9a9dbd8fe4310db8d2960bdb311e62cae5c5c8d.jpeg "98 blazer heater core hidden bolts") ](https://www.youtube.com/watch?v=_QhTjw6ZFjI)

Tester

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**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [January 9, 2022, 8:23pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/5 "2022-01-09T20:23:21Z")

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Heh heh. Little hands long fingers. Don’t drop the bolt. Mirrors, lights, long forceps. I use some of that flexible body sealer in the sockets to hold the bolt in when putting it back in again.

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**Author:** ![Twinflame15\_178781](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@Twinflame15\_178781](https://community.cartalk.com/u/Twinflame15_178781)\
**Post date:** [January 9, 2022, 8:40pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/6 "2022-01-09T20:40:58Z")

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Yes I removed the hoses when first starting this. Is there a trick to getting it lose? The heater core box seems stuck somehow.

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**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [January 9, 2022, 8:46pm UTC](https://community.cartalk.com/t/remove-heater-core-box-it-s-stuck/181742/7 "2022-01-09T20:46:04Z")

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See Tester’s video above for hidden bolts.