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Heater Core Box Help 1983 GMC Vandura 2500 #748686
May 21st 2019 1:48 pm
May 21st 2019 1:48 pm
Joined: May 2019
Posts: 8
Central Canada
F
Finch Offline OP
stranger
Finch  Offline OP
stranger
F
Joined: May 2019
Posts: 8
Central Canada
Hey Van Dudes I'm back with another problem I need some help with.
My heater core is shot, and for the past 3 weeks, I've been trying to fix it! I just want to continue my adventure.

Recently I figured I could bypass the heater core for the summer, and fix it in the winter. The only problem is. that after bypassing, coolant is still leaking out by the passenger's footwell! I'm fairly confident that it's just leftover antifreeze pooling in the big plastic box. So my question is this:

How to i get all that antifreeze out of the box without having to take apart the dashboard?
PS I've already flushed the heater core with water multiple times.
My ideas right now are; drill a hole in the right place; drive around town get things sloshing about, or cut a hole in the box.

PHOTOS: https://imgur.com/02TXRIt https://imgur.com/YnNIPYG


1983 GMC Vandura 2500
Re: Heater Core Box Help 1983 GMC Vandura 2500 [Re: Finch] #748688
May 21st 2019 2:52 pm
May 21st 2019 2:52 pm
Joined: Jun 2010
Posts: 14,301
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 14,301
Van Diego California
hook up a shop vac to one of the lines that you cut N suk it out.


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Heater Core Box Help 1983 GMC Vandura 2500 [Re: Finch] #748691
May 21st 2019 3:17 pm
May 21st 2019 3:17 pm
Joined: Apr 2019
Posts: 75
Suffolk County NY
D
DontComeKnocken Offline
journeyman
DontComeKnocken  Offline
journeyman
D
Joined: Apr 2019
Posts: 75
Suffolk County NY
Don't drill a hole in the heater box. Just blow some compressed air thru the hoses or vacuum it out like stated above.

Re: Heater Core Box Help 1983 GMC Vandura 2500 [Re: DontComeKnocken] #748696
May 21st 2019 3:26 pm
May 21st 2019 3:26 pm
Joined: May 2019
Posts: 8
Central Canada
F
Finch Offline OP
stranger
Finch  Offline OP
stranger
F
Joined: May 2019
Posts: 8
Central Canada
I will try that... but there doesnt seem to be any coolant left in the heater core... its in the box....


1983 GMC Vandura 2500
Re: Heater Core Box Help 1983 GMC Vandura 2500 [Re: Finch] #748704
May 21st 2019 4:30 pm
May 21st 2019 4:30 pm
Joined: Jan 2001
Posts: 2,179
Kellettville, PA
M
Meanmachine Offline
veteran
Meanmachine  Offline
veteran
M
Joined: Jan 2001
Posts: 2,179
Kellettville, PA
Can you remove the insert to the glove box to access the area?

Re: Heater Core Box Help 1983 GMC Vandura 2500 [Re: Finch] #748717
May 21st 2019 11:15 pm
May 21st 2019 11:15 pm
Joined: May 2019
Posts: 8
Central Canada
F
Finch Offline OP
stranger
Finch  Offline OP
stranger
F
Joined: May 2019
Posts: 8
Central Canada
alright, I didn't listen to any of you and I drilled some holes. Antifreeze poured out probably around 2-3 cups worth. after it slowed down I sprayed water in there and flushed the rest out. nice and clean, just gotta silicone the holes up
Pic https://imgur.com/GYfVuDS


1983 GMC Vandura 2500

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