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Old 04-05-2014, 09:35 AM   #15
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I just purchased a 2014 GMC Sierra 4x4. I know it will tow. The manual states to disconnect the ground from the battery. Has anyone come up with a different solution to this disconnect?
Thanks for your response.

gesmone,
Well Sir, they must have changed something between our '11 GMC Sierra 1500 4x4 and your '14 GMC. I've read ours several times to make sure I covered all the bases when it comes time to hook up and cruise on down the road and, there's nothing in mine about disconnecting any battery terminals, positive or negative. Wonder why they want you to do so. If you get a chance, I'd cruise on over to the dealer and, by-pass the service writer(s) and check directly with the most experienced electrical tech they've got and throw the question at him. Let us know if you do this and what you find out will you.
Scott
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Old 04-06-2014, 03:19 PM   #16
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Quote:
Originally Posted by gesmone View Post
I just purchased a 2014 GMC Sierra 4x4. I know it will tow. The manual states to disconnect the ground from the battery. Has anyone come up with a different solution to this disconnect?
Thanks for your response.
I've been looking at the 2014 GMC 1500s and the reason you have to disconnect the battery is because the new electronic steering system locks the steering wheel when the key is turned off. You have to leave the key in the accessory mode while towing. Here's the GM service bulletin pertaining to flat towing.
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Old 04-08-2014, 07:21 AM   #17
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Here is what I have determined. Since 2013 GM does not want any power run through the vehicle from an outside source. This includes any possible feedback that might come from the coach tail lights, brake signal, or turn signal.
I plan to use a disconnect similar to the one used in racing to disconnect the battery.
Roadmaster has a Bulb and socket kit to install on the truck for lighting. part#155 a small hole drilled in the rear of the truck taillight assembly.
a brake light switch. Part#751463. I use Invisabrake by Roadmaster. This will wire directly to the battery.
You can use a diode on the truck taillights to prevent any feedback to the vehicle computer system. I have chosen to use the Bulb and socket method because a diode can fail causing power feedback.
This is a lot of extra work but considering the cost of the truck computer system I want to completely separate the coach from the truck. Do not want any problems with GM in the case of warranty work.
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Old 04-08-2014, 07:37 PM   #18
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I need power to operate my toad breaking system. I wonder if I could just turn off as many of the power using accessories as possible, leave the key in accessory and depend on the battery rundown protection to keep the battery from going dead. I'd need to run the engine every so often. Also, maybe run a wire from the coach to charge the battery like I used to do for my 5th wheel.

It would be a lot easier to find some way to disable the steering wheel locking mechanism.
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Old 04-08-2014, 09:18 PM   #19
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Easy to run a charge line from the coach chassis battery to the toad battery use #10 wire with a 15 to20 amp auto resetting fuse on each end, may have to run a seprate ground if needed.
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Old 04-08-2014, 09:54 PM   #20
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The 2014 Toyota Tundra is now tow-able - 4 down (neutral position in 4x4 switch)!!!!!

And it's about D*&^ time!!!!! And they are manufactured in TX.
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Old 04-08-2014, 10:02 PM   #21
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Appreciate all the responses. We checked every dealer, and ended up buying a Nissan Frontier. Base plate ordered, and hope it works well. Thanks again.
Did you buy a standard trans Frontier? I think that is the only one thta is flat towable. Have you installed the base plate and done any towing yet? How do you like it, by now?
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Old 04-09-2014, 08:00 AM   #22
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I do not know if this was specifically mentioned (I skimmed over the answers you have received) but most 4X4's are flat towable IF they have a transfer case that can be set to Neutral. Most of these trucks are not flat towable in 2 WD or rear wheel drive versions unless they are manual shifts which can be left in Neutral. There may be other requirements as well, fuse pulling, battery disconnects, etc.

Each manufacturer will have specifics in their owner's manuals. These manuals are generally available on line so you can check them in advance.
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Old 04-09-2014, 12:18 PM   #23
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It is not about charging. GM wants the system shut down. If you need power for your breaking system a seperate 12 volt outlet will be needed to power it running from the battery itself.
I am getting my power directly from the coach to run my break system and not the truck.
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Old 04-09-2014, 12:50 PM   #24
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Have been towing a 2012 Silverado 1500 4X4 LT for the last year with zero problems, and the nicest feature is that you can take the key out of the ignition because the steering wheel doesn't lock. Also, the baseplate from Blue OX directly replaces the OEM tow hooks. I also use the Blue Ox towbar... Aventa I think is the name which is rated for 10K lbs.
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Old 04-10-2014, 06:03 AM   #25
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I've towed a 2005 and now a 2012 Chevy Colorado 4X4 nearly 15,000 miles with no problems...
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Old 04-10-2014, 06:27 AM   #26
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Our neighbor here in the park just purchsed a 2014 Dodge Ram 4x4 with the 4 door cab. It's a 6cyl. with 8 speed automatic and driving it around he's getting 28 mpg in town. He has the Ready Brute system for towing it.
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Old 04-11-2014, 08:50 PM   #27
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Quote:
Originally Posted by gesmone View Post
I just purchased a 2014 GMC Sierra 4x4. I know it will tow. The manual states to disconnect the ground from the battery. Has anyone come up with a different solution to this disconnect?
Thanks for your response.
Too bad GM screwed up a good thing. The setup on the 2011 didn't have any issues about disconnecting batteries or steering locks. I guess the more computers, the harder it is to tap into the system with plain old 12 volts. Pretty soon we'll need a software engineer to design a program when we want to light a tail light.
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Old 04-11-2014, 08:59 PM   #28
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We flat tow a 2012 F150 4x4. Shift it into neutral, switch to "neutral Tow", set the ac on recirculate, turn key back to stop and take off. Rvi brake system hasn't worn the battery down.
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