Any tips that would help reduce back pain while driving my truck?

Let it me try to. Two major issues for back pain patients and driving:1-sitting down for long time .2. Pouncing on the car seat. Both problems effect your back try to reduce them, using cushion seat and frequent stops.
Lumbar support. A lumbar support will put you spine in better alignment and should help. An exercise program to increase your spine fitness will also help. If you are a long haul trucker, it is a good idea to get out of the truck and walk around every few hours. Our bodies were not meant to sit for hours on end.