All 4 door actuators in our 2008 stopped working..... so I replaced all 4 actuators....they all worked now..... then after about a year 3 of the 4 stopped working...... On one Saturday I was able to replace the driver'* side but did not have time to replace the passenger side...... the driver'* side all worked now..... then in the course of 1 week the drivers side rear door stopped working..... So I took it back apart..... and tested that line with a new actuator....it, too, did not work...... now all the doors work but the rear diver'* side EVEN with another brand new actuator.....what would cause that actuator to work last week, and this week it does not??

2008 what?

Just a hunch: this sounds like bad wire(*) somewhere, or maybe connector(*).