coolant leaking into cab and under hood - The 1947 - Present Chevrolet & GMC Truck Message Board Network

superhondaz50 · 04-26-2007, 12:08 PM

I was driving my 69 c-10 and i'm not sure what happened but when I went to shift the engine revved out, I wasnt sure what to do so I killed it and pulled over. When I got out to look under the hood I noticed coolant was draining out of the box mounted on the firewall on the passenger side of the truck (heating stuff right ???) I also noticed coolant was draining on the passenger side floor in the cab. My question is... what happened and how do I fix it. From what I heard it's the heater core, am I correct?

Overkill67 · 04-26-2007, 12:09 PM

Sounds like you blew out the heatercore. Pretty easy fix. Shouldnt be too expensive either.

pharcydekm · 04-26-2007, 12:10 PM

Most definatley the heater core sprung a leak. I have seen a thread that gives instructions on howto replace. I would suggest using the search for "heater core" and you should find some good info.

**Classic Heartbeat** · 04-26-2007, 12:14 PM

Yep, that's the heater core. You have to remove the housing from the firewall to gain access to the heater core. You will also need to remove the right front inner fender to access all the bolts that hold the heater housing in place. We have new cores that actually fit for $39.95. Most auto parts stores sell the ones made in Mexico that do not fit. WES www.ClassicHeartbeat.com

BACKYARD88 · 04-26-2007, 12:18 PM

Try this: http://67-72chevytrucks.com/vboard/s...ad.php?t=69812

OLDIRON69 · 04-26-2007, 12:19 PM

You can bypass it for now, if your climate and yourself both agree.

EAST SIDE LOW LIFE · 04-26-2007, 01:17 PM

It's the heater core ..... had this happen to me in my 60 Vette. $39.95 looks like a good price for new and it fits. Good advice as well about the removal of the inner fender.

esll.

DUD2STUD · 04-26-2007, 01:42 PM

i have a heater core out of my 68' yours free if you pay for the ride

OlChev67 · 04-26-2007, 04:38 PM

Mine did that before and I just bypassed it for a few months until I decided to put a new one in because it got cold.

cdowns · 04-26-2007, 06:28 PM

to bypass as a temp fix you take the 2hoses off at the firewall and with a couple of clamps and a pipe nipple you join them together so the antifreeze wont leak in the cab anymore

benbloom · 10-30-2015, 08:12 PM

can anyone send me a link to the heater core on an ac cab model? can't find anywhere
thanks!

04-26-2007, 12:08 PM	#1
superhondaz50 Registered User Join Date: Mar 2007 Location: Behind the Taco Bell dumpster Posts: 296	coolant leaking into cab and under hood I was driving my 69 c-10 and i'm not sure what happened but when I went to shift the engine revved out, I wasnt sure what to do so I killed it and pulled over. When I got out to look under the hood I noticed coolant was draining out of the box mounted on the firewall on the passenger side of the truck (heating stuff right ???) I also noticed coolant was draining on the passenger side floor in the cab. My question is... what happened and how do I fix it. From what I heard it's the heater core, am I correct?

04-26-2007, 12:09 PM	#2
Overkill67 Registered User Join Date: Apr 2007 Location: Roselawn, Indiana Posts: 60	Re: coolant leaking into cab and under hood Sounds like you blew out the heatercore. Pretty easy fix. Shouldnt be too expensive either.

04-26-2007, 12:10 PM	#3
pharcydekm Registered User Join Date: May 2003 Location: Englewood, CO Posts: 146	Re: coolant leaking into cab and under hood Most definatley the heater core sprung a leak. I have seen a thread that gives instructions on howto replace. I would suggest using the search for "heater core" and you should find some good info.

04-26-2007, 12:14 PM	#4
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	Re: coolant leaking into cab and under hood Yep, that's the heater core. You have to remove the housing from the firewall to gain access to the heater core. You will also need to remove the right front inner fender to access all the bolts that hold the heater housing in place. We have new cores that actually fit for $39.95. Most auto parts stores sell the ones made in Mexico that do not fit. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

04-26-2007, 12:18 PM	#5
BACKYARD88 On the fast track to nowhere.. Join Date: May 2006 Location: Splendora, Texas Posts: 5,316	Re: coolant leaking into cab and under hood Try this: http://67-72chevytrucks.com/vboard/s...ad.php?t=69812 __________________ -Mike Owen- Support the board here! 71 Chevy short fleet build thread Double D Norwood, Houston, Cecilia, Jackson, Monroe and counting

04-26-2007, 12:19 PM	#6
OLDIRON69 Registered User Join Date: Mar 2007 Location: Ben Wheeler,Texas Posts: 992	Re: coolant leaking into cab and under hood You can bypass it for now, if your climate and yourself both agree. __________________ 05 2500HD 6.0 excab 69 LWB-Gone but not forgotten! 68 Dodge Charger 383/727 69 Dodge Charger-440/4spd

04-26-2007, 01:17 PM	#7
EAST SIDE LOW LIFE Senior Member Join Date: Mar 2007 Location: VANCOUVER ISLAND, B.C., Canada Posts: 1,602	Re: coolant leaking into cab and under hood It's the heater core ..... had this happen to me in my 60 Vette. $39.95 looks like a good price for new and it fits. Good advice as well about the removal of the inner fender. esll. __________________ Tomorrow is for doing today's stuff. ************************************* This truck has just the right amount of energy for me! Author: Warren Lake .... (member) Last edited by EAST SIDE LOW LIFE; 04-26-2007 at 01:18 PM.

04-26-2007, 01:42 PM	#8
DUD2STUD Registered User Join Date: Mar 2007 Location: Rohnert park, CA Posts: 139	Re: coolant leaking into cab and under hood i have a heater core out of my 68' yours free if you pay for the ride

04-26-2007, 04:38 PM	#9
OlChev67 Ever heard of Beech Island?? Join Date: Apr 2007 Location: Clemson, SC Posts: 327	Re: coolant leaking into cab and under hood Mine did that before and I just bypassed it for a few months until I decided to put a new one in because it got cold.

04-26-2007, 06:28 PM	#10
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: coolant leaking into cab and under hood to bypass as a temp fix you take the 2hoses off at the firewall and with a couple of clamps and a pipe nipple you join them together so the antifreeze wont leak in the cab anymore __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-30-2015, 08:12 PM	#11
benbloom Registered User Join Date: Mar 2015 Location: san rafael california Posts: 202	Re: coolant leaking into cab and under hood can anyone send me a link to the heater core on an ac cab model? can't find anywhere thanks!

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