yes, you could replace the pipe but before doing that, I'd give thought to the pipe being partially blocked, causing the water to back up. If you can, trace the pipe back to where it dumps into the main sewer, look for a clean out and take a look. built in 69' is a "newer" house.
The drain pipe must be at least 2 inches in diameter and the open end must be at least 18 inches above the trap. If not then it likely that a modern washing machine will cause it to overflow.
The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.