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**Boog** · 04-08-2021, 11:44 PM

I just found a few videos showing these vents are a well known source of water leaks on these trucks and how to replace them.

https://www.bing.com/videos/search?q...6FORM%3DVDRESM

I also have a water leak above the rear window. I replaced the 3rd brake light gasket and it appeared to have taken care of the leak so I went ahead and had the headliner replaced. Then after a couple of months I see water stains on the new liner from the same old leak. So I ran a real small bead of silicone around the light. Today I ran water over the top rear of the cab for 1/2 hour and saw no signs of leakage up there but both these cab vents are leaking.
Nice to see they can be replaced without removing the bed.

Another point of leakage on our trucks is found here.

https://www.bing.com/videos/search?q...AE9DF784CB89C2

04-08-2021, 11:44 PM	#2
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 12,957	Re: cab vent I just found a few videos showing these vents are a well known source of water leaks on these trucks and how to replace them. https://www.bing.com/videos/search?q...6FORM%3DVDRESM I also have a water leak above the rear window. I replaced the 3rd brake light gasket and it appeared to have taken care of the leak so I went ahead and had the headliner replaced. Then after a couple of months I see water stains on the new liner from the same old leak. So I ran a real small bead of silicone around the light. Today I ran water over the top rear of the cab for 1/2 hour and saw no signs of leakage up there but both these cab vents are leaking. Nice to see they can be replaced without removing the bed. Another point of leakage on our trucks is found here. https://www.bing.com/videos/search?q...AE9DF784CB89C2 __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross Last edited by Boog; 04-08-2021 at 11:58 PM.