cab vent
 

Does anyone know how to remove that cab vent on the back wall of of the truck? The outer part is between the cab and front bed panel. I am chasing down a water leak. 2006 GMC crew cab.

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

Re: cab vent
 

I found replacements at Amazon. True GM parts at about $31 each. The rubber lip around the plastic vent just crumbled with age allowing water to trickle in and run under the carpet. I r&r’d it like in the video.

Re: cab vent
 

Your carpet will dry on top but the jute underneath will stay wet and get moldy not to mention rusting out the floor.
You'll need to take it out and dry it on some sawhorses in the barn or garage. I usually blow a fan across it to speed up the drying process.
Laying it on sawhorses in the driveway in the sun will dry it out but it can shrink the carpet and jute.