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Old 11-19-2020, 09:40 PM   #1
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Battery Disconnect on GMC Canyon 4x4

I just got a 2021 GMC Canyon 4x4 and I'm going to tow it with a Roadmaster All Terrain tow bar. I know I'll have to disconnect the battery once the transfer case is in neutral.

Question? Will I lose presets on Radio when I do this? Time? Driver presets??

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Old 11-20-2020, 11:55 AM   #2
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Why do you need to disconnect the battery?
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Old 11-20-2020, 06:31 PM   #3
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No....you don't lose the presets. A little secret...before you disconnect, reverse the tow procedure and let the engine idle while your disconnecting. This lets all the computer stuff catch up. Once in the truck, it will tell you to roll down the driver's window and then roll it back up. By then all the other systems will be back to normal.

Roadmaster makes an electronic battery disconnect with a simple button you switch from inside the cab to disconnect the battery. It only works with gas models, not the diesel.

If you PM me with an email address, I will send you a check off list I made for placing the truck into tow mode and then out of tow mode. I printed a copy and laminated it. I kept in the passenger seat back pocket. On the back card, I put the emergency procedure for getting it out of tow mode if there is an issue (which I never had).
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Old 11-21-2020, 08:37 AM   #4
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Quote:
Originally Posted by Dutch Star Don View Post
No....you don't lose the presets. A little secret...before you disconnect, reverse the tow procedure and let the engine idle while your disconnecting. This lets all the computer stuff catch up. Once in the truck, it will tell you to roll down the driver's window and then roll it back up. By then all the other systems will be back to normal.

Roadmaster makes an electronic battery disconnect with a simple button you switch from inside the cab to disconnect the battery. It only works with gas models, not the diesel.

If you PM me with an email address, I will send you a check off list I made for placing the truck into tow mode and then out of tow mode. I printed a copy and laminated it. I kept in the passenger seat back pocket. On the back card, I put the emergency procedure for getting it out of tow mode if there is an issue (which I never had).
Thanks as soon as I figger how to PM I will. I have the Roadmaster disconnect, just received the New Base plates last night and will soon have the invisibrake. Just have to install it all, thank goodness for you tube videos.
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Old 11-21-2020, 08:45 AM   #5
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We have a 2020 Colorado we tow and installed a remote battery disconnect as well. Definitely use a checklist with this vehicle when setting up or disconnecting for towing. I have one as well with the reasons for each step; if you would like to take a look at it I can post it as an attachment in this thread.
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Old 11-21-2020, 09:28 AM   #6
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If you have the diesel......

I made this (somewhat extravagant) disconnect due to the Diesel needs more amps than the gasser. The Perko disconnect provides ample amps needed for starting the diesel.

I tried the simple $15 disconnects but found periodically they would lose connection which required me to unscrew and retighten the connection.

This Perko works flawlessly..... FWIW
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Old 11-24-2020, 07:50 AM   #7
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My Colorado Checklist for those interested.
Attached Files
File Type: pdf Colorado Flat Tow.pdf (62.6 KB, 13 views)
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Old 11-25-2020, 03:45 PM   #8
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2021 canyon 4x4 diesel

Does any one make a base plate for the canyon diesel? Was told blue ox might make one in Jan 2021.
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Old 11-25-2020, 06:05 PM   #9
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Trace.....just click on my name in the upper left corner of this post. It will pop up a window with several choices. One says...send Private Message. Click on that and provide your email address. I'll send you the format in Word and Word Perfect.
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Old 11-26-2020, 09:41 AM   #10
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Does any one make a base plate for the canyon diesel? Was told blue ox might make one in Jan 2021.
Yes.Already available I use The blue ox. Road master has it also.

Check Etrailer.com
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Old 11-26-2020, 03:42 PM   #11
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Does any one make a base plate for the canyon diesel? Was told blue ox might make one in Jan 2021.
Before you buy.....The Blue Ox base plates mount above the bumper. The Roadmaster base plates mount where the tow hooks are mounted. This is IMPORTANT depending on the type of coach you have. The Blue Ox, because they mount higher, work better with most gassers that usually have a high receiver.
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Old 11-27-2020, 08:09 PM   #12
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Here’s how I did my battery disconnect.

https://www.irv2.com/forums/f85/chev...on-399364.html
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Old 12-06-2020, 03:30 AM   #13
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Quote:
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Yes.Already available I use The blue ox but on a '16. Looks like Road master has it for the 21

Check Etrailer.com for most up to ddate
Update
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Old 12-11-2020, 10:17 PM   #14
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We tow our 16 canyon 4x4 diesel with no disconnect and no issues. If you install the road master or other light kit from etrailer.com which has diodes, it will use coach power only
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