When I point the wheel straight the truck drives straight, but when I am accelerating it pulls the wheel left about 10 degrees. The wheels turn the corresponding amount to the steering wheel's movement. I have gotten used to it and correct it almost without noticing but now I am ready to do something.
Check front steering components for any looseness. If everything seems tight, check for proper tire pressures and roate tires to see if pull goes away or pulls differently. If all is good check alignment.