2001 GMC Jimmy Support Question
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Question posted by bwgno1t on April 3rd, 2014
When To Use Tow Haul Mode On Gmc Jimmy
Current Answers
Answer #1: Posted by waelsaidani1 on April 3rd, 2014 10:52 AM
* PURPOSE Reduce the frequency and improve the predictability of transmission shifts when pulling a heavy trailer or a large or heavy load. This is most apparent in city traffic. Without tow/haul, the transmission may upshift on a closed throttle decel. With tow/haul, the transmission will hold the current gear on a closed throttle decel. This reduces upshifts and downshifts.
* Provide the same solid shift feel when pulling a heavy trailer or a large or heavy load as when the vehicle is unloaded.
* Improve control of vehicle speed while requiring less throttle pedal activity when pulling a heavy trailer or a large or heavy load.
* ACTIVATION Tow/Haul is selected or de-selected via a switch on the end of the transmission shift lever for all models except the GMC Jimmy and Envoy, their switch is mounted on the shift console. A light on the instrument panel will illuminate to indicate that tow/haul has been selected.
* Tow/Haul must be reselected every time the vehicle is started (if desired).
* FUNCTION Tow/haul is designed to be most effective when the vehicle and trailer combined weight is at least 75% of the vehicle's Gross Combined Weight Rating (GCWR).
* Operation of tow/haul in a lightly loaded or non-loaded vehicle will not cause damage. However, there is no benefit to the selection of tow/haul when the vehicle is unloaded, this situation will cause a firm shift. The tow/haul switch is not a performance switch.
* Selection of tow/haul when unloaded may result in unpleasant engine and transmission driving characteristics and reduced fuel economy. Tow/haul is recommend only when pulling a heavy trailer or a large or heavy load.