Join Date: Oct 2000
Location: Catasauqua, Pa.
Feedback Score: 0 reviews
Re: Tow / Haul Button Not Working '05
Do you hold the brake pedal for a little coming down a hill in Tow/Haul mode?
Disclaimer: I'm about to being asuuming stuff. You all know what that means.
I assume that the Torqshift works similarly to the Allison in the GM's. You press the button on the end of the gear shift lever to enter or exit Tow/Haul mode (T/H).
In T/H, the trans will downshift to a lower gear to help keep your speed down. On my dad's 2500HD, you have to apply the brake lightly, and hold it for a little amount of time, and the trans will then downshift. I assume (again, read my disclaimer!! [img]/ubbthreads/images/graemlins/blush.gif[/img]) that the Torqshift works the same way, you need to hold the brake pedal lightly for a short time period (only a couple seconds, if that).
In regard to your '96, the button on the end of the gearshift lever is just an Overdrive On/Off button. So if you pressed it to turn off OD, the trans would only shift up to 3rd gear. If OD was on, the trans would shift the entire range.
I also think that while in T/H, the Torqshift utilizes all of the gears, even overdrive. My pop's Allison does also. It changes the shift points in order to get maximum performance out of the engine for towing.
Hope this helps and isn't as clear as mud. [img]/ubbthreads/images/graemlins/frown.gif[/img] [img]/ubbthreads/images/graemlins/crazy.gif[/img]
Have a good one!!
'06 Pontiac Grand Prix. 4 wheels and an engine, I can drive it. 41,000 miles as of 7/27/07.
'03 Silverado 2500HD, CC/SB, 4x4, LS, DMAX/ZF6, 93,000 miles and sold.
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I miss my truck.