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Old 09-20-2018, 09:57 PM   #1 (permalink)
RKForaker
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Towing Thier truck behind Motorhome

Are there any of you that tow there truck behind a Motorhome or other mode of towing. Flat towing. I will be in about a week .


Last edited by OkDually; 09-20-2018 at 10:01 PM. Reason: prefix
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Old 09-21-2018, 02:24 PM   #2 (permalink)
rdminter
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I imagine if you are towing flat, you will have to disconnect your drive shaft.

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Old 09-21-2018, 02:36 PM   #3 (permalink)
davester
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I think I read in the owners manual for my '04, if it's 4x4, then you just need to put the transfer case in neutral, and if it's 2wd you can't (ie, they don't think most owners can handle disconnecting/reconnecting the driveshaft and tying it up or plugging the transmission output).


Maybe your owners manual will have similar info?
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Old 09-21-2018, 04:28 PM   #4 (permalink)
RKForaker
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Towing truck behind Motorhome

Disconnecting the driveline not required,putting in 4 wheellow nuetral and disconnecting the neutral battery terminal on both batteries on a diesel is required. Because you have electric power steering and the computer will be over correcting when traveling down the road is the explanation that I received from GMC.
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Old 09-21-2018, 06:02 PM   #5 (permalink)
rdminter
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Assuming it is a 4x4, he doesnt say what his truck is.
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air bags, air seats. 32ft chalenger 5th wheel 13k with trailersaver airhitch, fuel rail shim. airdog
raptor lift pump, egt guage. Equal tire balancing system.
Prodigy wireless brake controller. Iridium Sat phone, pcv reroute, boost guage.
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Old 09-21-2018, 08:26 PM   #6 (permalink)
DIESAHL
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sorry for dumb question but i often wondered when you do that even though the engine isnt running the vehicle would have more miles on it than recorded right? so lets say a vehicle says it has 50,000 but it could actually have like 80,000 on the moving running gear parts ? besides like wheel bearings and stuff what else would have more miles on it?
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Old 09-22-2018, 12:29 PM   #7 (permalink)
rdminter
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towing with the drive wheels down but disconnected from the transmission will add wear and tear on the wheels and suspension and the rear differential gears, but nothing else.
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06 c4500 lly monroe hauler body, preditor tuner,
air bags, air seats. 32ft chalenger 5th wheel 13k with trailersaver airhitch, fuel rail shim. airdog
raptor lift pump, egt guage. Equal tire balancing system.
Prodigy wireless brake controller. Iridium Sat phone, pcv reroute, boost guage.
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Old 09-22-2018, 03:03 PM   #8 (permalink)
davester
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And just to clarify the difference needed between 2wd and 4wd, at least for the GMT800 series trucks, the driveshaft needs to be disconnected from the transmission for 2wd vehicles, but you only need to shift the transfer case to neutral for 4wd, because


-for 2wd, the driveshaft goes directly to the transmission, and is spinning parts of it, but the internal oil pump is driven off the transmission input, so the spinning parts don't get proper lubrication as the pump isn't working
-for 4wd, set to neutral, the oil pump in the transfer case is driven off the rear output shaft, so with the driveshaft spinning the TC output shaft, the oil pump works, and everything in the TC gets lubed as you drive along, and with the TC in neutral, the output shaft of the transmission doesn't spin, so the transmission is also happy


This kind of thing also applies to other vehicles, but it depends on the design of the transmission and transfer case...
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