I'm looking for a little knowledge. My old truck just had one mode "tow
haul" used while towing. My 2006 5.7 cad cab appears to have 2 modes. Push
the button once and it says it is in "tow haul" mode. Push it again and "tow
haul" goes off but now "Over Drive Off" is displayed. I've read the owners
manual and I'd say the wording is anything but direct.
So with Vacation coming soon I'm trying to gather knowledge. I'm pulling a
5500lb trailer and we are headed for the mountains. Do I use "tow haul" or
"over drive off"? I understand "tow haul" alters the shift points? and "OD
off" lock out OD? But I'm having trouble understanding when to pick which.
And why do you not need both at the same time which does not appear to be an
option, right? One or the other are my only displayed choices.
Can someone help me out?
Advocate - 14 May 2006 19:44 GMT
> I'm looking for a little knowledge. My old truck just had one mode "tow
> haul" used while towing. My 2006 5.7 cad cab appears to have 2 modes. Push
[quoted text clipped - 9 lines]
> And why do you not need both at the same time which does not appear to be
> an option, right? One or the other are my only displayed choices.
With my Chevy I tow with overdrive off and not in tow haul mode. The
transmission shifts fine like this with my 7000 pound trailer.
.boB - 14 May 2006 20:28 GMT
> I'm looking for a little knowledge. My old truck just had one mode "tow
> haul" used while towing. My 2006 5.7 cad cab appears to have 2 modes. Push
[quoted text clipped - 10 lines]
>
> Can someone help me out?
O/D Off means just that. It doesn't affect anything else about the way the
trans works.
Yow/Haul is also an O/D Off, but also the transmission shifts later, holding the
truck in gear to get a little more towing power. Current transmissions shift very
soon in an attempt to increase fuel mileage and decrease emissions.

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.boB
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