A/C-Heater box re-seal
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
A/C-Heater box re-seal
Not sure if this is in the proper section of the forum but here goes. My vents bleed into one another badly so While I am changing the dash I may as well go ahead and pull the box from the firewall and re-seal it. Does any one sell a kit for this purpose that we know of? This is for the heater box in the passenger compartment.
Thanks in advance, George.
Thanks in advance, George.
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From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Re: A/C-Heater box re-seal
Nope and use RTV. Personally Ive pulled mine off a few times. Never had a issue with that. When you mean bleed like vent on the top is on and the dash comes on as well? If thats it id say the door flap is jammed abit
Thread Starter
Senior Member

Joined: Dec 2009
Posts: 702
Likes: 4
From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: A/C-Heater box re-seal
Use RTV where? Yes I am referring to the foam seals on the doors themselves. with A/C set to facing vents my windshield still frosts up from it bleeding air to the defrost at the same time. I checked with CLASSIC and they said they had no supplier for third gens.
Supreme Member
iTrader: (35)
Joined: Aug 2006
Posts: 1,470
Likes: 1
From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Re: A/C-Heater box re-seal
Ahh got yeah I thought you might have meant the box on the firewall. You can try a different box or send me a pic of the part you need and I can compare it to a box I got here and see if its in any better shape for yah
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