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'95 G20 antifreeze leak #731506
January 04th 2018 6:39 pm
January 04th 2018 6:39 pm
Joined: Sep 2017
Posts: 18
Oklahoma
abcde06991 Offline OP
stranger
abcde06991  Offline OP
stranger
Joined: Sep 2017
Posts: 18
Oklahoma
I'm getting an antifreeze leak i cannot figure out. It's something behind the heater valve
[Linked Image]
I couldn't really get a good picture as its in a tight spot


95 G2500 Vandura
[Linked Image]
Re: '95 G20 antifreeze leak [Re: abcde06991] #731559
January 06th 2018 12:56 am
January 06th 2018 12:56 am
Joined: Oct 2016
Posts: 188
Ohio
Gladiator Offline
member
Gladiator  Offline
member
Joined: Oct 2016
Posts: 188
Ohio
I took a clearer photo on my 95, if that's where the leak is coming from that's your rear heater control valve. AC Delco catalog shows one version for conversion vans and another version for factory auxiliary heat.

[Linked Image]

[Linked Image]


1995 Emerald Green Chevy G20 350TBI Gladiator conversion
Re: '95 G20 antifreeze leak [Re: Gladiator] #731569
January 06th 2018 7:11 pm
January 06th 2018 7:11 pm
Joined: Sep 2017
Posts: 18
Oklahoma
abcde06991 Offline OP
stranger
abcde06991  Offline OP
stranger
Joined: Sep 2017
Posts: 18
Oklahoma
Thats exactly what i was looking at, thanks


95 G2500 Vandura
[Linked Image]
Re: '95 G20 antifreeze leak [Re: abcde06991] #731570
January 06th 2018 7:45 pm
January 06th 2018 7:45 pm
Joined: Oct 2016
Posts: 188
Ohio
Gladiator Offline
member
Gladiator  Offline
member
Joined: Oct 2016
Posts: 188
Ohio
Not sure if it would help but on mine the coolant only flows to the rear heater in heat mode so you might be able to get away with just using the front heater in vent or defrost mode to prevent it from leaking until you get the chance to fix it.


1995 Emerald Green Chevy G20 350TBI Gladiator conversion
Re: '95 G20 antifreeze leak [Re: Gladiator] #731819
January 15th 2018 6:01 pm
January 15th 2018 6:01 pm
Joined: Sep 2017
Posts: 18
Oklahoma
abcde06991 Offline OP
stranger
abcde06991  Offline OP
stranger
Joined: Sep 2017
Posts: 18
Oklahoma
Weird, it actually stops leaking on heat mode, so its not that?


95 G2500 Vandura
[Linked Image]
Re: '95 G20 antifreeze leak [Re: abcde06991] #731821
January 15th 2018 6:06 pm
January 15th 2018 6:06 pm
Joined: Oct 2016
Posts: 188
Ohio
Gladiator Offline
member
Gladiator  Offline
member
Joined: Oct 2016
Posts: 188
Ohio
It must be because of where the leak is on the rear valve, and by having heat on the coolant flows right to the back instead of being pressurized against the valve and leaking.


1995 Emerald Green Chevy G20 350TBI Gladiator conversion

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