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Looking through this site I see mention of the dreaded rusting doors along the inside seam along bottom as a common thing.
Also mentioned, "was an easy fix", but nothing as to how!
So I went and looked... Behold! I've a wee bit starting!
What is the fix? Drill holes in bottom to let circulation flow?
Some Rust Bullet & paint will do the visual part of the lip, what about the inside?
Someone please explain "easy fix"?
Strange, for a 1999 this must of been garaged 90% of the time. Other than the doors, there is no rust. And the chassis looks better than my '04 Silverado that sees little use.
And the more I look,,, the more I like! Someone really took good care of this.
There is a TSB on the site here. I tried looking for it and gave up so I'll just give you the details from what I remember. Basically, the fix is to have the door skin peeled back, remove the rust, prime and repaint.
Unless you are a body shop type person, I can't seeing it being a Saturday project - to be honest.
I’ve had the same problem on my old car,I found this paint called Bill Hirsch miracle paint. It completely destroys the rust permanently. You basically just break up the loose surface rust and paint it on. You can apply it with either a brush or spray gun. It really works well, I use it on a bunch of different things around my house and vehicles. It is a automotive paint so it’s ok to use of a vehicle. I'm not 100% sure if it is a lacquer based or enamel based. I don't know how it works but I guess it cuts off the oxygen from the rust and stops it from spreading while it seals old rust. The only thing is if the metal that it's being applied to isn't solid, [weakened from rust], then this paint will not work because the metal needs to be replaced. It is very easy to apply and use, doesn't need a spray gun to be used. I used it only my old car and never had a problem to this date, which has been about 2 ½ years.
Try Fluid Film for any type of rust. It stops rust on contact, prevents rust on all new metals and lasts for an extended period of time because it will not dry out or evaporate.
If you haven't tried it and live in the US, just PM me for a sample can.