Lubricate the slide rails first. I use bicycle chain lube. If that doesn't fix it, replace the resetting relay in your 12v panel. Relays wear out and need to be replaced occasionally. You can tell which one it is because it is the one that clicks when it resets.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof