General Motors Genuine GM Valve Part# 13596856

Perfect fit for my 2005 GMC 1500 4 door

Fit perfectly

East install - From the outside of the cab (on the top side of the vent), take a long screwdriver to press down on the top tab on the old part. (Use a rubber mallet if needed.) The old part will fall out and drop on the floor. Clean the old decomposing rubber off the cab around the perimeter of the hole. From the top, I used a wet soapy rag wrapped around a short & narrow piece of plywood. From the bottom of the vehicle, I was able to reach and clean the remaining gunk around the hole by hand. Then from the bottom of the vehicle, slide the new vent in place. The new vent only partially slipped into place. Going back to the top of the vehicle, a tap on the top of the vent with the screwdriver to help seat the new vent the rest of the way.

If you've suddenly started noticing wet carpet in your '99 - '06 pickup truck, you likely have a broken seal on the top of the cab vent. You can take a long screwdriver and a rubber mallet and smack straight down on the center of the top of the vent between the cab and bed and it'll pop right out. The new one will install with just a click. I didn't rip out my interior to get at the old one like some have done. After installing this, my carpet dried up and cab venting is perfect.

I bought OEM to make sure I got a good sealing item. I am not a fan of imitation parts that require a seal, as subpar components and manufacturing usually fail, causing more issues in the long run. This item was an upgrade from the original. The original had a foam gasket. This one has a rubber seal that "suctions" to the truck cab once it is snapped in securely, creating a nice seal. Foam deteriorates at a greater rate than rubber, due to shrinkage and hardening. Recommended!