Whats involved in replacing the heater core with A/C? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kickinasphalt · 06-07-2004, 11:50 AM

My new 72 4x4's heater core leaks (which I assume is a sign its time to replace it). What do you have to do to replace it? I've never replaced a heater core on anything before so I'm not familiar with the process.

JimKshortstep4x4 · 06-07-2004, 01:22 PM

Replacing the heater core on an AC truck is pretty straight forward as it is inside the truck. I would start by removing the glove box. Remove the heater vent box, (part in the center), remove the "S" connector and diverter box. Disconnect the heater hoses. Remove the screws holding the heater box and remove. Once you have the heater box out, there are two straps that hold the heater core in place.

Jim

06-07-2004, 11:50 AM	#1
kickinasphalt Registered User Join Date: Jan 2000 Location: North Dakota Posts: 351	Whats involved in replacing the heater core with A/C? My new 72 4x4's heater core leaks (which I assume is a sign its time to replace it). What do you have to do to replace it? I've never replaced a heater core on anything before so I'm not familiar with the process. __________________ 1972 K-10 Longbox,6" lift w/35's/350/SM465/NP205/3.73 1972 C-10 Longbox,350/350 1998 Pontiac Grand Prix GTP FOR SALE: 1971 K-10 Longbox,350/SM465/NP205

06-07-2004, 01:22 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Replacing the heater core on an AC truck is pretty straight forward as it is inside the truck. I would start by removing the glove box. Remove the heater vent box, (part in the center), remove the "S" connector and diverter box. Disconnect the heater hoses. Remove the screws holding the heater box and remove. Once you have the heater box out, there are two straps that hold the heater core in place. Jim



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