Do they fix trailer doors

Yes

They can

Do they fix holes in trailer?

Just make sure it's a "PETRO" alot of them are "FREIGHT LINER" Cert,Some "TA' S will do alot of work,I was surprised about,the only catch,Hope Mechanics Are Good...?

I wouldn't have known that, but they definitely don't do bunk heaters!! Personal experience with that issue, had to go back to Freightliner.