There are 2 fuses involved in the steps. A 5 amp that powers the switch and a 20 amp fuse that powers the motor. Usually they are under the hood in the BCC. Check these first, then Try this.
1. Unplug and re-plug your 4 wire connector under your steps. If that doesn't work, then,
2. Get a hammer and tap on the step motor.
Caution: Be sure you are not in the way of the steps in case they extend when you open the door.
While your under the steps look at the green ground wire and make sure it is tight.
Sometimes there is a poor connection or a bad ground or a dead spot in the motor. Think about it, when you drive in the rain, all that water is splashing under the steps and wiring. The other thing to do is lube the steps, there are a bunch of hinge points both on the side and under the steps that need lubed monthly. Go to a motorcycle shop and buy motorcycle chain lube, tell them you want the sticky stuff, works great and lasts a long time.
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