It is important to wake up your glutes and remind your back that it is there to provide stability. The glutes are the primary mover for hip/hinge movements, however, if the glutes are not firing on all cylinders, then you could experience pain in the low back. Try the following two drills to get the glutes firing and warm up your lower back to prepare for lifting.
10 Alt Bird Dog
60sec each side Banded Fire Hydrant