Non A/C Heater Core - The 1947 - Present Chevrolet & GMC Truck Message Board Network

markizme · 07-31-2018, 03:36 PM

Hey Gang. I recently inherited my Dads 1968 GMC 2500 Series truck and while going through it to make it road worthy I found the heater core was leaking. After some searching on the web, it shows that the inner fender is required to come out to remove the heater/blower box. My truck is a non A/C truck and after looking around a bit at the truck I have my doubts if that is true. Has anyone else changed a heater core in a non A/C truck without removing body panels, or even worse, cutting open the heater box to get to the heater core?

Thank you in advance. Oh, Bytheway, I am a newbie here, and my name is Mark.

**clay68c10** · 07-31-2018, 03:49 PM

Welcome!
You can take out the inner fender or loosen the hood hinge and move it forward a bit. Maybe you can sneak the case out by pulling the blower motor first, but I've never done it that way.
It's really pretty easy to take these trucks apart.

Andy4639 · 07-31-2018, 03:56 PM

All you need to know right here.

http://67-72chevytrucks.com/vboard/s...d.php?t=600448

Freddo · 07-31-2018, 03:56 PM

Hi Mark, My truck is a 1967 non a/c truck. When I changed my heater core, I did have to remove the inner fender, but it was worse thinking about it than actually doing it.
It was several years back but as I recall, I loosened the passenger hood hinge where it fastened to the inner fender and slid a 2x4 on top of the fender from the driver side fender to the top of the passenger side fender & supported the hood hinge. The inner fender bolts ran mainly just inside the wheel well and the other attachment points were pretty visible as I recall. Some of the inner fender bolts were a different length, so pay attention to that. It will save you a couple of minutes when you re-assemble it. Once the inner fender is loose, you can slide it down a couple of inches which gives you access to the heater core cover bolts. It’s pretty simple after that. Hope this helps.

markizme · 07-31-2018, 04:00 PM

Hello Clay, thank you for your reply. The hood is already off of the truck as I am putting the final touches on installing a fresh motor in the truck, so removing the hood hinge is not a problem. I just don't want to get into something to further along the project than necessary at this point. I am waiting on a bit of exhaust hardware so after that I can drive this thing.

markizme · 07-31-2018, 04:09 PM

Quote:

Originally Posted by Andy4639

All you need to know right here.

http://67-72chevytrucks.com/vboard/s...d.php?t=600448

Thank you Sir. I guess with your info in hand, there is nothing else to do but get after it. Thank you and everyone for your input

I bought a core from Amazon and it is Aluminum. Maybe I'll send it back and get one that I may not have any installation issues with.

markizme · 07-31-2018, 04:25 PM

Quote:

Originally Posted by markizme

Thank you Sir. I guess with your info in hand, there is nothing else to do but get after it. Thank you and everyone for your input

I bought a core from Amazon and it is Aluminum. Maybe I'll send it back and get one that I may not have any installation issues with.

Posted via Mobile Device

markizme · 07-31-2018, 04:26 PM

Quote:

Originally Posted by markizme

Posted via Mobile Device

Is this huge dent factory? I think I can remember helping my Dad change this when I was a kid.
Posted via Mobile Device

demian5 · 07-31-2018, 04:46 PM

Quote:

Originally Posted by Andy4639

All you need to know right here.

http://67-72chevytrucks.com/vboard/s...d.php?t=600448

That's what I followed.

OregonNed · 07-31-2018, 06:12 PM

Dropping the fender and moving the hood hinge definitely helps - and makes getting everything reassembled (in my case) easier when dealing with the gasket/seal..

**clay68c10** · 08-01-2018, 01:11 PM

That huge dent is probably there from the last time when you were a kid. That probably helped with removal.

markizme · 08-01-2018, 06:48 PM

Quote:

Originally Posted by clay68c10

That huge dent is probably there from the last time when you were a kid. That probably helped with removal.

I was thinking the same thing Clay.

bill3rail · 08-02-2018, 02:03 PM

Somebody pounded that fender down to remove the heater core once before.

If you reinstall with a new heater core, you can leave out that one bolt that is hard to get to for easier removal for the next owner.

markizme · 08-02-2018, 03:00 PM

Quote:

Originally Posted by bill3rail

Somebody pounded that fender down to remove the heater core once before.

If you reinstall with a new heater core, you can leave out that one bolt that is hard to get to for easier removal for the next owner.

I’m sure that is the case. And by the way, there won’t be another owner after me 😁
Posted via Mobile Device

07-31-2018, 03:36 PM	#1
markizme Registered User Join Date: Jun 2018 Location: Sacramento, California Posts: 52	Non A/C Heater Core Hey Gang. I recently inherited my Dads 1968 GMC 2500 Series truck and while going through it to make it road worthy I found the heater core was leaking. After some searching on the web, it shows that the inner fender is required to come out to remove the heater/blower box. My truck is a non A/C truck and after looking around a bit at the truck I have my doubts if that is true. Has anyone else changed a heater core in a non A/C truck without removing body panels, or even worse, cutting open the heater box to get to the heater core? Thank you in advance. Oh, Bytheway, I am a newbie here, and my name is Mark.

07-31-2018, 03:49 PM	#2
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,979	Re: Non A/C Heater Core Welcome! You can take out the inner fender or loosen the hood hinge and move it forward a bit. Maybe you can sneak the case out by pulling the blower motor first, but I've never done it that way. It's really pretty easy to take these trucks apart. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

07-31-2018, 03:56 PM	#3
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Non A/C Heater Core All you need to know right here. http://67-72chevytrucks.com/vboard/s...d.php?t=600448 __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

07-31-2018, 03:56 PM	#4
Freddo Registered User Join Date: Jun 2013 Location: Richland, WA Posts: 85	Re: Non A/C Heater Core Hi Mark, My truck is a 1967 non a/c truck. When I changed my heater core, I did have to remove the inner fender, but it was worse thinking about it than actually doing it. It was several years back but as I recall, I loosened the passenger hood hinge where it fastened to the inner fender and slid a 2x4 on top of the fender from the driver side fender to the top of the passenger side fender & supported the hood hinge. The inner fender bolts ran mainly just inside the wheel well and the other attachment points were pretty visible as I recall. Some of the inner fender bolts were a different length, so pay attention to that. It will save you a couple of minutes when you re-assemble it. Once the inner fender is loose, you can slide it down a couple of inches which gives you access to the heater core cover bolts. It’s pretty simple after that. Hope this helps. Last edited by Freddo; 07-31-2018 at 03:58 PM. Reason: Spelling

07-31-2018, 04:00 PM	#5
markizme Registered User Join Date: Jun 2018 Location: Sacramento, California Posts: 52	Re: Non A/C Heater Core Hello Clay, thank you for your reply. The hood is already off of the truck as I am putting the final touches on installing a fresh motor in the truck, so removing the hood hinge is not a problem. I just don't want to get into something to further along the project than necessary at this point. I am waiting on a bit of exhaust hardware so after that I can drive this thing.

07-31-2018, 06:12 PM	#10
OregonNed Registered User Join Date: Dec 2012 Location: Vancouver, Washington Posts: 1,644	Re: Non A/C Heater Core Dropping the fender and moving the hood hinge definitely helps - and makes getting everything reassembled (in my case) easier when dealing with the gasket/seal.. __________________ 1968 Chevrolet C/10 LWB - 327, TH350 - 4/5 Drop

08-01-2018, 01:11 PM	#11
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,979	Re: Non A/C Heater Core That huge dent is probably there from the last time when you were a kid. That probably helped with removal. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

08-02-2018, 02:03 PM	#13
bill3rail Registered User Join Date: Jul 2013 Location: LI, NY 11801 Posts: 1,140	Re: Non A/C Heater Core Somebody pounded that fender down to remove the heater core once before. If you reinstall with a new heater core, you can leave out that one bolt that is hard to get to for easier removal for the next owner. __________________ 1970 C10 8' Fleetside, L6 250, 3 on the Tree. The most basic of pickup trucks!



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