Its under Water, so no, also i found 5 others at least with the same Bug, so definitely bugged.... And there are more also that simply will not... Well, this Game don't deserve my Time anymore i will rush the Stuff and finish it, then quickly sell it to some other Victim, first Time i sell a Game also, but well the best is i sell the Xbox360 with all Games (over 160 so far) because i will not buy any Games any more for the 360 and not buy a Xbone and no also PS4 and certainly never again something from UBI.... From now one i play only on Steam and w8 for the next gen Consoles to come, i not consider Xbone / PS4 next-gen and the current XBL Desaster was the last Drop in the already filled Can... Enough is Enough!
you can unlock the sunken truck location .. you just have to be tricky
see the VIDEO
https://www.youtube.com/watch?v=8TpCjAGNol4
It's a very well known bugged location already discussed here numerous times...
There is a search tool on this forum, if you would use it, you could also find out, that you can unlock it in an unconventional way:
HE UNLOCKED IT !!!!!!! NO cheats, No mods!!! See the video!!!
P.S. WID, you've beaten me with this one...))))