Grouping objects in object mode

In my project i am working on, i have made a basic truck but with different parts and when i make it move to a certain place, every part moves a different way so it looks like the truck disassembles itself and then reassembles.

Parent all the separate objects to one object. If you have a complex model, you may find it easiest to add an Empty and place it above your truck. Then select all of the objects that make up your truck using Shift- LMB click to select them. Make sure that the last item you select is the empty (or other item that will become the parent). Now, press Ctrl-P and choose to parent all the selected items to the active item (the Empty). Finally, to move rotate or scale your truck simply select the Empty and only the Empty to transform.

Thanks for that!!:eyebrowlift: