Dust entering cab -- 2021/2500 Crew Cab

[Viejo]

I just got back from a 2000+ mile trip to northwestern Nevada and did a fair amount of graded gravel roads. There was quite a bit of fine dust in some areas. I noticed about 50 miles into the gravel that there were copious amounts of dust entering the cab. It was the ultra-fine dust due to the fact that it had quite a convoluted path to get into the cab and only the lightweight airborne particles would find their way past the ridged carpeting that is mounted vertically against the back wall of the cab between the seatback and the sheet metal. I stuffed some towels along the bottom edge which was open and that did help but there was still a fair amount getting in. Could it be missing a foam filter or rubber flap? I've had many trucks in the past and never any dust entered the cab. They must have missed installing some sort of component that keeps the dust from entering.

I plan on taking it to the dealer but I want to have all my ducks in a row before I go.

Anyone deal with this. the dust was so thick in some places you could not see the plastic.

 

[Will_T]

Don't know or can't see which truck you have but my 2021 3500 does not have that issue that I have noticed. I just was on many miles of rough, very dusty gravel roads. I had a tan truck when I got home but no dust inside.

 

[jadmt]

I notice driving dusty trails I get dust sucked around the lower vent at the rear doors. Almost like there is negative pressure from the vents. Noticed it after doing the white rim trail in moab.

 

[H3LZSN1P3R]

I notice driving dusty trails I get dust sucked around the lower vent at the rear doors. Almost like there is negative pressure from the vents. Noticed it after doing the white rim trail in moab.

View attachment 22514

Was your truck repainted?

 

[jadmt]

Was your truck repainted?

no just dirty lol. got it right off the truck

 

[H3LZSN1P3R]

no just dirty lol. got it right off the truck

Just now seeing the profile pic see you have black paint below the body line…. From the posted picture i though the truck was silver then painted black and they didnt do the door jambs ( see that often on older trucks)

 

[el_barto]

Was your truck repainted?

no just dirty lol. got it right off the truck

I think he’s seeing the paint line in the door jam since your truck is 2-tone

 

[elephantrider]

I've not had that issue. I run between central texas and the rockies often. if that were to happen, it would have reared its head during one of the many west texas dust storms I've been lucky enough to go through.

 

[takopecky]

I notice driving dusty trails I get dust sucked around the lower vent at the rear doors. Almost like there is negative pressure from the vents. Noticed it after doing the white rim trail in moab.

View attachment 22514

I noticed the same thing on my mega cab. If you follow this vent to the inside of the cab, there's a hole where a retainer clip goes into to hold down the interior door sill trim piece. This hole goes straight through to this vent. I sealed the inner hole with some silicone and then snapped the trim back in place. It has reduced the amount of dust coming in the cab. Obviously, do both sides!

 

[jadmt]

I noticed the same thing on my mega cab. If you follow this vent to the inside of the cab, there's a hole where a retainer clip goes into to hold down the interior door sill trim piece. This hole goes straight through to this vent. I sealed the inner hole with some silicone and then snapped the trim back in place. It has reduced the amount of dust coming in the cab. Obviously, do both sides!

nice and thanks.

 

[Lee Iacocca]

Do you have the in cabin air filter behind the glove box?
Those holes are for air pressure when you shut the door I think, they usually have a one way flap.

 

[takopecky]

The 'check valves' in the back bulkhead are for pressure relief, yes. The holes I mentioned are in the door opening sill. These holes were probably intended to have a sealing grommet.

 

[jadmt]

The 'check valves' in the back bulkhead are for pressure relief, yes. The holes I mentioned are in the door opening sill. These holes were probably intended to have a sealing grommet.

Any secret to popping the vent covers off? Don’t want to break a clip if i can help it. Thanks

 

[takopecky]

Don't pop the vent covers off, seal the hole inside the cab directly across from the covers.

 

[jadmt]

Don't pop the vent covers off, seal the hole inside the cab directly across from the covers.

not sure what hole you are talking about. I don't see a hole on mine. photo if possible thanks.

 

[Will_T]

not sure what hole you are talking about. I don't see a hole on mine. photo if possible thanks.

No hole on mine either I don't think. (If I am looking at the right location.) Maybe that is why dust does not seem to get into my cab?

 

[takopecky]

Perhaps it's just a mega-cab thing...

 

[Viejo]

well, the dust entering my cab (not a mega cab) is definitely coming through the back wall. There is no doubt about that. I attached some photos below. Sorry about the quality and slow response, I have several high-priority moving targets which are work-related that need my attention. Having said that this dust is aggravating my asthma/

The description of the vehicle is in the title but Ill also add it here.

2021 - 2500 standard crew cab

Below each photo, I've added a description -- let me know if you have any questions

View towards the back wall of the cab. Dust is entering the cab from behind that carpeted wall covering.

I used whatever I could find to cover up the opening. In this case, it was a sweater, and as you can see it did do its job by trapping a fair amount of dust.

The opening runs the length of the wall. another sweater - again this is under the rear seat.

Lots-o-dust

More dust

Here is a vent that is mounted to the back wall where I suspect that the dust is entering. It's difficult to see since there is water on top but that is a view between the cab and the bed looking down towards the ground.

 

[LateToTheParty]

There's a decent view of that vent in this video describing the rear seat mod.

Sounds like it would be worth the time to at least fold down the rear seat and investigate.

 

[Viejo]

There's a decent view of that vent in this video describing the rear seat mod.

Sounds like it would be worth the time to at least fold down the rear seat and investigate.

Interesting and thanks for sharing. I am going to take it to the dealer but I may instal a foam section of 2 in think and 12 in by 12 in and cover each one of those vents just for good measure. I am going to see what the dealer has to say and have them explain to me what their solution is. obviously, this is not normal and if they rectify it then like most others I should have no issues.