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I just purchased a 2014 Silverado 2500 with Duramax engine and Allison transmission. I tow horse trailers – a 2 horse gooseneck and a 2 horse bumper pull. Generally speaking, I travel with 1 horse at a time, regardless of trailer.
My previous truck was an F150. Very simple towing operation, and I can’t complain about that baby – took me all up and down the East Coast. The new truck was purchased because of the gooseneck trailer which touches the edges of the Ford’s capacity.
I don’t fully understand the sequential use of all the various towing features of this truck.
Do you activate the features only at the start of a drive, or on the fly?
Do you push in tow haul mode on the shift lever at the start of every tow? And, how, when, why do you adjust the plus/minus arrows on the tow haul mode?
Do you leave it in tow haul mode for the whole trip?
Do you push in the exhaust brakes at the start of every tow?
When do you shift into M and why?
I saw a video of a Silverado where the driver indicated he did not put his foot on the brake in tow haul mode – let the engine do it all – is that correct?The owner’s manual is not very clear…says to use depending on road and load conditions, but does not give much in the way of parameters to know what to use when.
Any clear, concise information would be very helpful.
RosieL
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The M is to put the transmission in Manual shift mode and the arrows are for shifting when in the manual mode.
Tow haul is for use when in Automatic shift mode. This mode keeps the transmission in lower gears longer when accelerating at lower speeds or in rolling hills. It impacts shifting and serves no purpose when up to highway speed on the interstate.
The general rule is to use tow haul when the trailer is at 75% or more of the vehicle towing capacity.
I’m surprised you didn’t find a clear explanation in the Chevy owners manual. My experience is with GMC and our owners manual has very clear explanations for the operation of tow haul mode.
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