Tow package differences
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Tow package differences
Can anyone list the specific differences between the standard tow package and the heavy duty tow package on an 04 Expy? I'm aware of the tranny cooler and the seven pin harness. Any other differences? For almost a 2000lb increase in capacity it seems like there would be some other structual differences.
Also, what's the benefit of a 7 pin harness? my boat trailer hooks up fine to the standard one. I'm also thinking about adding a tranny cooler.
Also, what's the benefit of a 7 pin harness? my boat trailer hooks up fine to the standard one. I'm also thinking about adding a tranny cooler.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
The 7-pin allows you to utilize a trailer brake controller to control any electric brakes which may be on the trailer.
Heavy Duty Trailer Tow Package $350.00
- Class IV Trailer Hitch Receiver
- Wiring Harness w/4 & 7 Pin Connector
- Heavy Duty Auxiliary Transmission Oil Cooler
- Heavy Duty Radiator
- Electronic Braking Wiring Kit
Heavy Duty Trailer Tow Package $350.00
- Class IV Trailer Hitch Receiver
- Wiring Harness w/4 & 7 Pin Connector
- Heavy Duty Auxiliary Transmission Oil Cooler
- Heavy Duty Radiator
- Electronic Braking Wiring Kit
Last edited by Monsta; Sep 26, 2005 at 10:31 PM.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
the expy rated to tow 8900lbs is 4x2 and has the 3.73. also a l/s rear is a real help for towing. also do you have the 4.6 or 5.4 engine. the 5.4 has the better rear end and tranny. it has a 9.75 rear compared to the 8.8
Senior User
Joined: Nov 2004
Posts: 183
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From: Denton, MD
I have the Advance Trac with the tow package and the 5.4. I went and got a brake controller and with the pre wire for that it was a breeze. The only problem I can complain about is no matter how light the trailer, you WILL feel it back there. maybe I got spoiled by my old SD, but even with a 6x12 landscape trailer empty, you can easily see a 2-3 mpg difference.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
Originally Posted by now_exowner
The only problem I can complain about is no matter how light the trailer, you WILL feel it back there.
That was the main reason to go back up to an Excursion. That thing doesn't even know it's back there...even with 2 1100# horses and all their tack.
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Joined: Feb 2005
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I pull a 6,000lbs. travel trailer and get an avg of 9.8 mpg. This was for both down and back from CT to Disney earlier this year. I have a 03 E.B. with the HD tow package (3.73, 5.4, tranny cooler and bigger radiator) I believe the frame went through some big changes in 03 making it stiffer and that increased its tow rating. I'm not sure of the diff between standard tow and HD tow.
Monsta is right about feeling it but thats the trade off. The truck rides NICE (no truck ride) without towing (which is most of the time) and has all the "off the line" that I'm looking for when towing.
So, if you do LOTS of high cap towing then maybe the Expy is not for you. BUT if you are towing a boat here and there it could be a good fit. The 7 pin covers all the brakes, lights etc that you would find on a heavy trailer (like a bigger camper)
Shov
Monsta is right about feeling it but thats the trade off. The truck rides NICE (no truck ride) without towing (which is most of the time) and has all the "off the line" that I'm looking for when towing.
So, if you do LOTS of high cap towing then maybe the Expy is not for you. BUT if you are towing a boat here and there it could be a good fit. The 7 pin covers all the brakes, lights etc that you would find on a heavy trailer (like a bigger camper)
Shov
Last edited by shov76; Sep 28, 2005 at 05:41 AM.
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From: Maryland
The 04 Expy came with a class III frame-mounted hitch receiver standard. And I believe it has a tranny cooler standard as well. With the tow package, the rating of the hitch was increased to class IV and the radiator and tranny cooler were upgraded. The only rear end ratio available on the 04 Expy was 3.73. Unlike the 03 though, the open diff was standard. Limited slip was an option (but not available with AdvanceTrac).
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