Open the drivers side door. Should be removable panel to the right. Mine was Coroplast that ran all the way across and was screwed down. Remove the panel and it should be there. My Savoy XL was somewhat noisy but didn't use it much so I ignored it. Noise is usually caused by hard piping to the pump not flexing. If it really bothers you, flex hoses at the pump connection will probably help
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2013 Prime Time Crusader 330MKS
2018 Chevy 2500 D/A Z71 4x4 Offroad
2006 Holiday Rambler Savoy 33SKT-40,000 trouble free miles-retired
2006 Chevy 2500 D/A-retired
2013 Chevy 2500 D/A-retired