Tow/Haul mode... AND... On Demand Shifting 545RFE?

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m2ike

Junior Member
Joined
Apr 29, 2021
Posts
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Location
North Idaho
Ram Year
2004
Engine
Hemi 5.7
I have a 2004 Ram 2500 with the hemi 5.7. I recently towed a ~5000lb trailer about 1k miles. Two questions:

1. What does the Tow/Haul mode button actually do? I thought at first it was turning the OD off, but when on the flats it still seemed to be shifting into 5th gear. The only perceptible change I think is happening is that it likes to force either 3rd or 4th gear while going uphill vs when the tow/haul is off. I also read someone on another forum talking about a "double press" of the button that does something else... is that legit?

2. Is there any aftermarket product out there that allows manual control over which gear the transmission is in? I know I can gear select 1, 2, or D... but with a 5 speed,I'd love to be able to press a button to force 3rd gear... or 4th gear.
 

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