Thank you for all the input. Applied a grease remover to the slide rails, teeth and gear mechanism and brushed them with dawn and water. After power washing, drying and applying a dry lubricant the squealing and vibration is now gone. The slides now come in very smoothly.
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DPAM
2017 GMC Denali diesel, crewcab, 4x4, regular box.
2010 Montana 3150RL- Moving to Montana Package , Hickory Edition Package, wet bolts
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