The tank on the passenger side of the engine cools/heats the transmission fluid with the engine coolant. My truck also has an air cooler for the transmission in front of the radiator, both coolers are piped in series,(goes through one, then the other then back to transmission. ) I assumed they all had two coolers. I have the towing package. bg
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White 99 3500, QC, 3:55, auto. most options except leather, Line-X bed liner, fiberglass running boards Rancho 9000s, bug shield and window vents, black vented 5th wheel tailgate, 110 gal. aux. fuel tank.