Stephen_WExplorerNov 01, 2013Retard switchMy neighbor just bought a new 2013 Fleetwood Expedition 40X with a 360HP Cummings and Allison transmission on a Freightliner chassis. We were talking about the "Retard" button and he said the owners m...Show More
wolfe10ExplorerNov 02, 2013To OP: Please call your chassis maker with your VIN and ask exactly what you have. Freightliner 800 385-4357. As an alternative, call Allison with your transmission serial number:800 252 5283With that Freightliner chassis, I have NEVER seen a transmission retarder, NEVER.
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