Drivers side carpet soaking wet 2018 sierra 1500. Don't think its the antenna.

[Rogerrambo]

I have a leak somewhere, maybe someone can help me out. The drivers side carpet is soaking wet, awhile back I pulled everything back and there was a puddle under the padding. I did some searching and saw the shark fin antenna leaks so I went to the dealership to get it looked at and they wanted $500+ to replace the whole unit for one gasket. I decided I would try to silicone the base of the antenna, its completely sealed. Drivers side is still getting wet, the wet area runs about the width of the door sill all the way across to the center console. I noticed after completely drying everything then sealing the antenna the truck sat in a good rain storm and it wasn't wet so I'm wondering if it only occurs while driving? Are there any other known leak points around the drivers side besides the antenna?   Its a 2018 sierra 1500 double cab standard bed.

[shakenfake]

Could be your windshield

[JimCost2014]

On 4/5/2022 at 12:39 PM, Rogerrambo said:

I have a leak somewhere, maybe someone can help me out. The drivers side carpet is soaking wet, awhile back I pulled everything back and there was a puddle under the padding. I did some searching and saw the shark fin antenna leaks so I went to the dealership to get it looked at and they wanted $500+ to replace the whole unit for one gasket. I decided I would try to silicone the base of the antenna, its completely sealed. Drivers side is still getting wet, the wet area runs about the width of the door sill all the way across to the center console. I noticed after completely drying everything then sealing the antenna the truck sat in a good rain storm and it wasn't wet so I'm wondering if it only occurs while driving? Are there any other known leak points around the drivers side besides the antenna?   Its a 2018 sierra 1500 double cab standard bed.

Welcome to the site.

 

Is the headliner wet/stained anywhere? Sun roof in truck? 3rd brake light can leak on the trucks, water will travel. Seam in cab body on roof can split. Are your vents clear on your cowl, drain tubes open? Any plugs missing, holes in fire wall?

[steelerdude15]

Have you looked at the weather stripping on and around the driver front door for damage or if its coming off? That can cause massive leaks too.