I have a 2015 329 with BAL Accu Slide systems and have been through the manual and other than making sure cable tension remains correct have not found any other things to do until there is a problem. No maintenance list or lube instructions. Do you have the cable system or did they change for 2016 to something else? If it's squeaking on operation your cables are probably too tight.
2015 Georgetown 329DS
2014 Chevy Equinox
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