Anyone replaced the AGS on their 2014 Jeep Cherokee yet? I ran over a cone a while back and the CEL came on complaining about the AGS. Dealership wants $860 to replace it. I looked up the part, can get it for $150 online. I also found instructions on removing the front fascia in other forum posts. Does anyone know if there is anything special about the process or can a DIYer just remove the fascia and switch out the AGS?