Rattacus Im having the same problem with the trucks too did u fix it if so how
I've used scalespeeder's GitHub repo and have trucks spawning in quite happily. I get the occasional truck/lorry spawning in that cannot be driven and the doors won't open, but it can still be looted for all the goodies that have been pre-loaded on the truck. Take a look here: GitHub - scalespeeder/1.09-DAYZ-Let-s-Build-Modded-Xml-Files-Chernarus-: My popular "Lets Build" series of modded DAYZ XML files for PC. Xbox or PS4 updated for 1.09. Includes Ada's full of building items and various QOL improvements.
You may need to do the whole install in order to get this working. I wiped my friend's server after the 1.10 update so we lost everything anyway but that was to be expected, and we all agreed to start from scratch again. The GitHub repo has a browsable files section so it might be worth taking a look at that?
Our server now has cars spawning in complete with all doors plus many items in the inventory. Lorries (trucks) are the same, and they have HUGE carrying capacity. With the scalespeeder config, they spawn with logs/metal sheets/nails/hammers/jerrycans/sledgehammers/axes etc. Fully loaded.
Well recommended.
Note - we did have a few weird spawn issues where a lorry/truck would spawn on top of a police wreck Volga but that problem seems not to occur any more. Hope this helps, people.
Cheers.
John G