Door Seal to big

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

RvVern

Junior Member
Joined
May 27, 2023
Posts
8
Reaction score
24
Location
Boston NY
First Name
Rick
Truck Year
85
Truck Model
k20
Engine Size
LS
I installed a new door seal from LMC because the top of my door seamed to leak some air and I thought a new seal would do the trick but the new seal caused a new issue, I have to slam the door real hard to get the door closed where the old seal it closed just fine , So my question is where can I find a thinner door seal so my door closes easier ? I threw my old seal in the trash or I would have put that back on, Thanks in advance
 

Octane

Full Access Member
Joined
Dec 31, 2019
Posts
2,040
Reaction score
3,634
Location
Atlanta
First Name
Eddie
Truck Year
1977
Truck Model
K10
Engine Size
350
If it's the correct seal it needs to break in over time.Or you may have to adjust the door striker.At least until it does break in.
 

RvVern

Junior Member
Joined
May 27, 2023
Posts
8
Reaction score
24
Location
Boston NY
First Name
Rick
Truck Year
85
Truck Model
k20
Engine Size
LS
I put it in 4 months ago thinking it would break in but its not ?
 

fast 99

Full Access Member
Joined
Dec 31, 2021
Posts
2,090
Reaction score
3,064
Location
Spokane, Washington
First Name
Brian
Truck Year
81,85
Truck Model
K20
Engine Size
350
How squeezed is the weatherstrip on the hinge side? Had the same issue, due to manufacturing tolerances [or lack thereof] one of mine was very tight and hard to close. It's been a year now with the door shut most of the time. It has finally come out of it.
 

TotalyHucked

Full Access Member
Joined
Feb 24, 2020
Posts
3,791
Reaction score
12,255
Location
Auburn, Georgia
First Name
Zach
Truck Year
1985
Truck Model
Sierra 1500
Engine Size
5.3
That's totally normal. I put new door seals on mine 2 years ago and still have to shut mine harder than before. Completely worth it for the better seal/less wind noise IMO.
 

Scott91370

Full Access Member
Joined
Apr 2, 2018
Posts
1,009
Reaction score
1,043
Location
Burleson, Tx
First Name
Scott
Truck Year
1985
Truck Model
Sierra1500
Engine Size
350
3 year old seals here and still slamming doors. I did adjust the striker to help some.
 

RvVern

Junior Member
Joined
May 27, 2023
Posts
8
Reaction score
24
Location
Boston NY
First Name
Rick
Truck Year
85
Truck Model
k20
Engine Size
LS
the door seal measures 1/4" or thicker, after shutting the door sometimes I have to readjust the mirro
 

Autocar

Junior Member
Joined
Feb 24, 2024
Posts
7
Reaction score
15
Location
Clark, CO
First Name
Mark
Truck Year
1982
Truck Model
K25 VIN, but it's a 1 ton
Engine Size
350
Me too! Just replaced about a month ago and now slamming doors. I'll put up with it for benefit of less wind noise.
 

87gmcburb

Full Access Member
Joined
Jan 2, 2024
Posts
75
Reaction score
190
First Name
Don
Truck Year
87
Truck Model
GMC Sierra Classic Suburban
I installed a new door seal from LMC because the top of my door seamed to leak some air and I thought a new seal would do the trick but the new seal caused a new issue, I have to slam the door real hard to get the door closed where the old seal it closed just fine , So my question is where can I find a thinner door seal so my door closes easier ? I threw my old seal in the trash or I would have put that back on, Thanks in advance
The seals from LMC, Classic etc... are all aftermarket and fit poorly. If you are looking for actual OEM fit you need to contact Mr A' Chevy truck parts. HIs name is Jon Addington and he is the only place I have ever found actual OEM fit. He uses NOS seals and has them reproduced, this is as good as you get other than finding your own NOS stock or making them from original tooling. I have no affiliation with him only being a customer. I believe he is located in the Pacific North West but ships throughout the US. His number is 425-422-7345, or search Mr As/Jon Addington on FB.
I tried 3 different seals on my 87 burb barn doors and each one fit like crap until I found this guy. The new fit is slightly tight but settles in quickly just like the original.
 
Last edited:

Octane

Full Access Member
Joined
Dec 31, 2019
Posts
2,040
Reaction score
3,634
Location
Atlanta
First Name
Eddie
Truck Year
1977
Truck Model
K10
Engine Size
350
I put it in 4 months ago thinking it would break in but its not ?
Spray it down with wd40 or lithium grease and try it.Or adjust the door.
 

CalSgt

Full Access Member
Joined
Oct 3, 2021
Posts
1,731
Reaction score
3,897
Location
CA
First Name
Casey
Truck Year
1980
Truck Model
Chevy K-10 Custom Deluxe
Engine Size
350
Spray it down with wd40 or lithium grease and try it.Or adjust the door.
^^^ This

I was going to suggest lubing the weatherstrip (especially at the hinge side) with something. I smeared a thin layer of Vaseline on the door where it makes contact with the seal to get my doors to shut at all.
 

RvVern

Junior Member
Joined
May 27, 2023
Posts
8
Reaction score
24
Location
Boston NY
First Name
Rick
Truck Year
85
Truck Model
k20
Engine Size
LS
So I bought a 20’ door seal from Amazon and installed it and it’s a perfect fit for my door, and for $21.00 it’s a great deal, thanks for all the suggestions
 

Wazzabie

Junior Member
Joined
Aug 8, 2012
Posts
12
Reaction score
7
Location
WA
First Name
Wazzabie
Truck Year
78
Truck Model
K5
Engine Size
350
The aftermarket door seals do not fit like the originals. Also the aftermarket door seals do not look like the originals. I have some NOS door seals and they fit without having to slam the door. The aftermarket door seals are too big.
 

Cemack

Full Access Member
Joined
May 1, 2019
Posts
61
Reaction score
34
Location
Alberta Canada
First Name
Chris
Truck Year
1978
Truck Model
K15
Engine Size
350
I was slamming mine fairly hard after putting in new LMC ones. I then put some pex pipe around the striker and it is way better. Then new striker had a piece of plastic around them from factory. If your striker is missing the plastic, try the pex pipe trick
 

Blazerbiker

Junior Member
Joined
Jan 15, 2024
Posts
13
Reaction score
23
Location
Rifle CO
First Name
Stephen
Truck Year
1982
Truck Model
K5, actually a Jimmy since it's a GMC
Engine Size
504in
On a single cab, rolling down a window can be a thing too. The cabs aren't vented (or not vented well enough) and it makes it harder to shut the door. It's also a pain to crack the window to shut the last door. Installing some sort of cab vent could be a good idea.
 

Latest posts

Forum statistics

Threads
44,401
Posts
956,765
Members
36,714
Latest member
MartinK5
Top