70 Chevy K20 door weatherstrip
 

I am a new member with limited computer skills so I apologize in advance for any errors. My question is: replacing my door weather stripping with a quality companys push on product has left me with hard to close doors. Before replacement both doors closed fine. I removed the new push on weatherstriping and tested both doors. Latches sound good, doors close fine. Put the new push on weatherstriping back on same problem as before. If I roll the Windows down it is better. Called the company but not much help. Maybe a member has had this happen and solved it. I'm thinking of trying another supplier. Thanks for your help. Mongo4298

Re: 70 Chevy K20 door weatherstrip
 

Try spraying WD-40 on the gasket. Letting the door sit windows up in the sun helps tremendously. Taking a Crecent wrench and slightly bend the pinch weld in at the tight areas helps, then install the gasket. Videos on Youtube if you have access...

Re: 70 Chevy K20 door weatherstrip
 

This video should help . :chevy:

https://www.youtube.com/watch?v=Zvw5RhbhPVc

Re: 70 Chevy K20 door weatherstrip
 

Mine got better with time, within a month or two they were 90% better. No complaints now 3 years later.

Re: 70 Chevy K20 door weatherstrip
 

57taskforce, thanks for the info on the door seals. I see where the 1971 & up pickups have a built-in vent. With my windows down the doors do close easier. Just not a subscriber to slamming doors. mongo4298

Re: 70 Chevy K20 door weatherstrip
 

Over the years people adjust the doors because they get wind noise from the old seals . I used precision push ons on my 68 . I had to adjust the doors anyway as they were off the truck . I got everything to line up and it’s a breeze to close both doors . Even though my wife likes to slam doors anyway .