Dual Batteries - How does it work? - Page 2 - Chevy and GMC Duramax Diesel Forum
2011-2016 (Non Powertrain) Discussion of 2011-2016 topics not related to powertrain

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post #11 of 19 (permalink) Old 12-14-2019, 03:55 AM
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Hook have you seen the positive terminals on this new trucks? Spider web of wires.

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post #12 of 19 (permalink) Old 12-14-2019, 07:52 AM
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Quote:
Originally Posted by redwngr View Post
If it's only for a few weeks I wouldn't even worry about it.

Of course a maintainer (as opposed conventional charge only device) isn't going to hurt.


There is a way to set them back to shipping mode and use even less power.

https://www.dieselplace.com/forum/at...130_204806.jpg

I see the bulliten is from 2014... Has anyone confirmed / used this on a L5P?

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post #13 of 19 (permalink) Old 12-14-2019, 08:29 AM
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Quote:
Originally Posted by NHfireDmax View Post
I see the bulleten is from 2014... Has anyone confirmed / used this on a L5P?
You made we curious enough to try.

Seems to works as advertised.


Start engine.
Activate flashers.
Foot on brake.
Key to 'crank' for 15 seconds.

'Transport mode on' message appears in DIC.

Battery icon on dash also shows in red. (Radio keeps playing...fan keeps running...)


Deactivates the same way.

DIC message 'Transport mode off'.
'Dismiss' button appears, battery icon turns off.

2018 GMC 2500 L5P CCSB 4x4 Denali - Mineral Metallic; previous '11 LML, '10 LMM and 04.5 LLY
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post #14 of 19 (permalink) Old 12-14-2019, 10:26 AM
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So what is the point of transport mode


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post #15 of 19 (permalink) Old 12-14-2019, 10:37 AM
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Reduce battery draw while in storage or in staging areas.

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post #16 of 19 (permalink) Old 12-16-2019, 03:00 PM Thread Starter
 
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Quote:
Originally Posted by 407driver View Post
Since you just purchased it, this thread may be of interest/use to you in maintaining it.........+ some other useful information:

https://www.duramaxforum.com/forum/m...ew-owners.html
Yup, been through it. Good stuff. I have replaced all fluids except PS/Brake Boost - will probably wait for Spring on that one.

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post #17 of 19 (permalink) Old 12-19-2019, 04:32 PM
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I would get out of the truck, close the door and not worry the batteries for even a month of sitting.
My spare 04 1500 (Old and Busted) sits for months at a time with an Interstate blem battery in it. Usually starts no problem. My 48 hp John Deere sits outside for months in the winter without running and starts fine.

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post #18 of 19 (permalink) Old Today, 04:50 PM
 
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If you ever change batteries you have to, change both at same time. Your system is only as good as your weakest battery same goes for TV remote cant have 2 new ones and 1 bad one
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post #19 of 19 (permalink) Old Today, 05:30 PM
J83
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Quote:
Originally Posted by Hook'em_Horns! View Post
There's logic in the ecm to keep the starter from engaging when the engine is running.
depends on the year. Anti-grind is not a thing on all models.

2015 Chevy Silverado 2500 HD 6.6L LML
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