Also check on the U-haul website about what "they" allow.
Enter your truck data and it will show you the trailers "they" will allow you to rent.
Their trailers, their rules
And check your trailer hitch rating and what kind of wiring connector it uses, so no surprises when picking up the trailer
U-haul just has the flat 4-wire connector on most trailers, getting an adapter, if needed, ahead of time is cheaper, u-haul sells them but............a buck is a buck
Not sure if the '08 has separate brake/turn signal wires in the rear, if so you may need a converter for the trailer hook up, like this: https://www.etrailer.com/Wiring/Curt/C56190.html
On some models the rear brake/turn signal bulb is one filament(bulb) and the Multi-switch(turn signal lever) cuts power to the brake light power when that turn signal is connected, so only 1 wire goes to each rear bulb, 2 wire setup.
Other models used 3 wires, one for each turn signal and one for the brake lights, and either used separate bulbs for brake/turn or dual filament bulbs.
U-haul trailers are setup for 2 wire, if you have a 3-wire system then you need a converter, or if you have a "trailer package" it may already have one, not sure on that.