I have a brand new Golds Gym crosswalk 570. We took it out…

I just worked on one of these that had the same issue and it turned out to be a pinched wire harness. I would check that first and then you can do the following:
1. remove safety key
2. press and hold the speed+ and stop keys at the same time
3. Put the safety key in/on and release the keys
4. press stop once
5. hit the incline + arrow and let the incline go the whole way up and down
6. remove safety key and try

If these instructions do not work to fix the incline motor
check your main harness running down the right leg for breaks in the wires or a loose connection if nothings found you can switch the red and black wires on the incline motor terminal block and see if it goes down. If it does you know you are only getting voltage to one side of the motor. There is a schematic under the motor hood that tells you what the voltage should be when you press the up or down keys. Use a multi-meter to see if you are getting the correct voltage coming from the console to the motor control board and then from the board to the motor. If no voltage from console-replace console if you have voltage from console but not from board - replace board and finally if you have voltage from console and from board replace motor. You will need to test the voltage both when pressing the up key and the down key.