6 speed auto in tow/haul - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 04-16-2008, 03:49 PM Thread Starter
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6 speed auto in tow/haul

Does the new 6 sp auto use all the gears when towing or does it lock out the OD gears?:
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post #2 of 3 (permalink) Old 04-17-2008, 02:31 AM
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Quote:
Originally Posted by heavyhaller
Does the new 6 sp auto use all the gears when towing or does it lock out the OD gears?:
T/H locks out OD
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post #3 of 3 (permalink) Old 04-17-2008, 03:12 AM
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The T/H mode will keep it out of over drive as long as you are accelerating or have a certain amount of load on the engine. When you get to your cruising speed and the load on engine and trans is light enough it will go into overdrive. The T/H mode just keeps it in each gear longer and keeps it out of OD longer until the load or torque input is reduced enough to allow it to get into OD.

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