I just picked up a brochure for the 2002 GMC HD pick-ups (3/4&1 ton) With
the Tow/Haul option, they state you can tow in OD when the speed stabilizes.
My brother in Oregon used to tow a small (21 ft) fith wheel with a Ford 1/2
ton with the O/D auto transmission. He said he was told by the dealer that
he could tow in O/D under the following conditions: 1 basically flat
terrain. 2 the transmission didn't "hunt" gears 3 Neither the transmission
nor the engine started heating up. He had a transmission oil gauge
installed. And I'm sure towing a trailer comes under the more demanding
conditions which require the transmission fluid be changed MORE often. And I
think a lot of people don't EVER have their fluid changed or the
transmission serviced. I have a 78 IH Scout, which doesn't EVER tow
anything. We have the fluid changed every 12 months, minimum. I have 160,000
miles on the transmission. I had it rebuilt at 150,000. Just in case. Bob K
in PHX
----- Original Message -----
From: "Gary Perry" <glperry@fwi.com>
To: <bmdumkee@auroranet.nt.ca>; <oletrucks@autox.team.net>;
<bcubed@vanhalen-irc.com>
Sent: Thursday, April 25, 2002 1:48 PM
Subject: Re: [oletrucks] Re: Transmission troubles
> The "Tow" button does much more than that. The new trannies are full
> electronic shift from the "puter" now and they can arrange the shifts spe=
> eds
> hardness, etc depending on application and program. Button does lock out
> the OD feature. I don't think it shuts out the "lock-up" but not sure, se=
> ems
> that would be a needed item to get the mileage out of it. If "check engin=
> e"=20
> light comes on, it means more like air/fuel ratio is messed up because of
> throttle position and slow engine revs when pulling a load or excess heat
> from same. Light is more for emissions than anything else.=0D
> =0D
> G. L. Perry=0D
> =0D
> -------Original Message-------=0D
> =0D
> From: Blaine Dumkee=0D
> Date: Thursday, April 25, 2002 06:29:17 PM=0D
> To: Bill Broadway; oletrucks@autox.team.net=0D
> Subject: Re: [oletrucks] Re: Transmission troubles=0D
> =0D
> I was told this button disables the electronic lock up on the torque=0D
> converter.=0D
> =0D
> I had a 94 Chev 1/2 ton and whenever I pulled my holiday trailer the "Che=
> ck=0D
> Engine Light" came on. As a solution a mechanic told me to install a togg=
> le=0D
> switch to control the electronic lock up, which it is my understanding is=
> =0D
> what Chevrolet did with the "Tow" button.=0D
> =0D
> Blaine=0D
> ----- Original Message -----=0D
> From: "Bill Broadway" <bcubed@vanhalen-irc.com>=0D
> To: <oletrucks@autox.team.net>=0D
> Sent: Thursday, April 25, 2002 10:01 AM=0D
> Subject: RE: [oletrucks] Re: Transmission troubles=0D
> =0D
> =0D
> > My truck, a 2000 Silverado with the Heavy Duty towing package has a=0D
> > button on the gear selector for TOW, is this not on the older trucks? I=
> f=0D
> > you push it in, besides getting a little Tow light on the dash it drops=
> =0D
> > the truck out of overdrive. I was told even if I didn't tow, which I=0D
> > don't much, to occasionally flip it into tow and drive for a while.=0D
> >=0D
> > Bill=0D
> >=0D
> > > >I just had the transmission on my 1997 CK1500 Z71 rebuilt (bought ne=
> w=0D
> > > >11/97 with towing package; now with 93,000 miles). The mechanic told=
> =0D
> > me=0D
> > > >that I continually overheated the transmission and burned it up=0D
> > towing=0D
> > > >in overdrive. My owner's manual specifically states that you can tow=
> =0D
> > in=0D
> > > >overdrive, and even goes so far to say heavy loads can be towed in=0D
> > > >overdrive. I mainly tow two things, a pontoon boat and a small=0D
> > utility=0D
> > > >trailer. Both of these are well within the rated towing capacity
of=0D
> > the=0D
> > > >vehicle. Usually I am towing no more that a few miles. Now that
the=0D
> > > >transmission has been rebuilt, I will tow everything in at least 3rd=
> =0D
> > > >gear, if not lower. For heavy loads, should I drop to 2nd and how=0D
> > fast=0D
> > > >can I drive in 2nd? I'm currently attempting to get Chevy to pay the=
> =0D
> > > >$1,800 it cost me to rebuild the transmission, as I believe it was=0D
> > their=0D
> > > >misguidance that lead to my problems. Any advice?=0D
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959=
> =0D
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959=0D
> =0D
> =2E
>
> [demime 0.97c removed an attachment of type image/gif]
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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