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Old 09-08-2012, 09:06 PM   #7
Mykk
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Join Date: Apr 2005
Location: Prescott Az
Posts: 55
Re: what is tow/haul mode

Here is a screen shot from the tuning software I use; This is a factory cal for an '03 Silverado 1500 5.3/4L60E

Normal tables on the left, Tow/Haul (Known as Performance in the software) is on the right:




In tow/haul mode the PCM adds more line pressure to the transmission, but it also adds more torque management between shifts.

Last edited by Mykk; 09-08-2012 at 09:14 PM.
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