Some noise is normal depending on the type of slide mechanism. It's likely just the motor taking up a little slack in the gears. Since it's a new trailer, I'm sure you have a big stack of paperwork that came with it. Find the paperwork for the slide system and it should list recommended lubricants and tell you when it should be done. There are a number of products on the market and you can just do a search on the forum to see a whole bunch of people arguing over which one is best. Seals and gears / tracks should be done a few times a year.
2012 Chevy Tahoe LTZ - HD tow package
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