The tailgate on my 20011 Durango started sagging so I replaced the passenger side strut since it was cheaper and easier to replace than the driver side strut. After replacing passenger side strut I continued having issues wit tailgate sagging. Few weeks later I coughed up the $200 to replace the driver side power lift motor/strut with the wiring harness. After replacement the tailgate still sagged. I have noticed that in cold weather the tailgate sags really bad but in warm/hot weather I have no issues. At this point both struts are new and not sure how to fix the sagging issue and trying to avoid paying an arm and leg at dealer.