Replaced my heater core! Lots of fun! Pictures!!! ;) - Page 4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*Mister-B* · 10-26-2012, 12:13 PM

I'm definitely bringing an old thread back from the dead here, but with the weather getting colder, I think some of us could be in the middle of needing to do this job. This is a great tutorial.
Posted via Mobile Device

KEL · 10-26-2012, 02:57 PM

--

724x4LB · 10-16-2013, 03:49 PM

Awesome write up! I need to tackle this job soon and now I feel much better about diggin in knowing what Im in for. Question. Can I just drill an access hole in the inner fender to get to that nasty bolt? Or are there other reasons for loosening the fender?

bollybib · 10-16-2013, 03:54 PM

no_rice · 10-16-2013, 03:58 PM

Quote:

Originally Posted by jewels.

and now i'm talking with a fellow board member on the phone.... guess who?

obviously this is an old thread... that phone has a cord!

**yote1234** · 10-16-2013, 07:23 PM

feel your pain! changed mine last month! yuk!!

Tomaso · 03-04-2017, 09:17 PM

My first post. U guys are great!!!
Hi Jewels, UR my hero! Your pix and explanation of how to change out a leaky heater core were VERY informative. The heater/cooler unit in my 1972 GMC 2500 Sierra 4x4 looks a lot different from most of the pix and diagrams I've seen. The build plate on glovebox door says Four Seasons A/C, but the box has a name on it that aint GM. I'm guessing the previous (and ONLY) other owner might have had an after market system installed to replace original?? Anyway, someone here said the removal is easier if equipped w/air. How so? My truck's just back from fresh paint, and I hate the idea of tearing the whole front end apart. Any ideas for an old scardy cat?
Thanks a bunch for any help.

Nomadicflyer · 03-04-2017, 10:59 PM

I've had my heater core up on the shelf for 2 years, figured it was just gonna die sooner or later. I figured I'd change it, now that I'm doing other things... never figured it was the right time, just because my fender/hood is off. Tell you what, changing the valve cover gaskets, manifolds and gaskets are SO much easier when you can sit on the tire and work on the engine!

Now IS the time to do this job!

**BlueBullet** · 03-04-2017, 11:06 PM

Heater core on an AC cab is inside the cab. Never taken one apart on the inside so not sure if it's neseceraly easier. The outer box probably says Harrison on it . It's the make of factory parts like the radiator also.

Nomadicflyer · 03-05-2017, 12:52 AM

Thanks, Blue! That's me, then. I'll take it slow, figure it out.

**71CHEVYSHORTBED402** · 03-05-2017, 01:11 AM

Nice. Good idea chalking the hinges too. Ooooooooops........2003?

10-26-2012, 12:13 PM	#76
Mister-B Account Suspended Join Date: Oct 2012 Location: Salt Lake City, Utah Posts: 3,331	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) I'm definitely bringing an old thread back from the dead here, but with the weather getting colder, I think some of us could be in the middle of needing to do this job. This is a great tutorial. Posted via Mobile Device

10-26-2012, 02:57 PM	#77
KEL 72 GMC Join Date: Feb 2008 Location: Wells, Maine Posts: 534	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) -- Attached Images

10-16-2013, 03:49 PM	#78
724x4LB Registered User Join Date: Feb 2013 Location: Grand Canyon, AZ Posts: 32	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) Awesome write up! I need to tackle this job soon and now I feel much better about diggin in knowing what Im in for. Question. Can I just drill an access hole in the inner fender to get to that nasty bolt? Or are there other reasons for loosening the fender? __________________ 72 Chevy 4x4 Gifted 383 Function over Form

10-16-2013, 03:54 PM	#79
bollybib Registered User Join Date: Nov 2010 Location: Carlsbad, CA Posts: 1,584	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) __________________ - Jim - My Daily Driver is a 1969 Chevrolet Custom/20 Fleetside 350/TH400/Eaton H052 4.10 and its Project thread is here http://67-72chevytrucks.com/vboard/s...d.php?t=456911

10-16-2013, 07:23 PM	#81
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,327	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) feel your pain! changed mine last month! yuk!! __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

03-04-2017, 09:17 PM	#82
Tomaso Registered User Join Date: Sep 2015 Location: santa fe nm Posts: 6	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) My first post. U guys are great!!! Hi Jewels, UR my hero! Your pix and explanation of how to change out a leaky heater core were VERY informative. The heater/cooler unit in my 1972 GMC 2500 Sierra 4x4 looks a lot different from most of the pix and diagrams I've seen. The build plate on glovebox door says Four Seasons A/C, but the box has a name on it that aint GM. I'm guessing the previous (and ONLY) other owner might have had an after market system installed to replace original?? Anyway, someone here said the removal is easier if equipped w/air. How so? My truck's just back from fresh paint, and I hate the idea of tearing the whole front end apart. Any ideas for an old scardy cat? Thanks a bunch for any help.

03-04-2017, 10:59 PM	#83
Nomadicflyer Registered User Join Date: Apr 2015 Location: Pierre, South Dakota Posts: 173	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) I've had my heater core up on the shelf for 2 years, figured it was just gonna die sooner or later. I figured I'd change it, now that I'm doing other things... never figured it was the right time, just because my fender/hood is off. Tell you what, changing the valve cover gaskets, manifolds and gaskets are SO much easier when you can sit on the tire and work on the engine! Now IS the time to do this job! Attached Images __________________ 1972 C20 Fleetside "Miss Olive" http://67-72chevytrucks.com/vboard/s...d.php?t=721563

03-04-2017, 11:06 PM	#84
BlueBullet Senior Member Join Date: Apr 2013 Location: Danvers Minnesota Posts: 967	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) Heater core on an AC cab is inside the cab. Never taken one apart on the inside so not sure if it's neseceraly easier. The outer box probably says Harrison on it . It's the make of factory parts like the radiator also. __________________ 1972 K10 SWB wife's driver 1967 Pontiac GTO Big Bird - 1972 Longhorn K30 http://67-72chevytrucks.com/vboard/s...d.php?t=753294

03-05-2017, 12:52 AM	#85
Nomadicflyer Registered User Join Date: Apr 2015 Location: Pierre, South Dakota Posts: 173	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) Thanks, Blue! That's me, then. I'll take it slow, figure it out. __________________ 1972 C20 Fleetside "Miss Olive" http://67-72chevytrucks.com/vboard/s...d.php?t=721563

03-05-2017, 01:11 AM	#86
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,197	Re: Replaced my heater core! Lots of fun! Pictures!!! ;) Nice. Good idea chalking the hinges too. Ooooooooops........2003? __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025



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