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-   -   Colorado/Canyon Towing Issue? (https://www.irv2.com/forums/f85/colorado-canyon-towing-issue-457173.html)

Treetop Flyer 08-15-2019 04:10 PM

Colorado/Canyon Towing Issue?
 
I’ve recently started towing a 2016 GMC Canyon 4x4 duramax diesel. I’ve followed the GMC owners manual for dingy towing but on our first trip towing, after disconnecting and driving the truck we got a “Service 4WD” message and found the vehicle was in 4WD with no way to shift out of it. Took it to a dealer who determined GMC had a software update to address the problem. Everything worked fine for several trips but today (5 weeks later) the same thing happened again. I have an appointment with a different dealer (based on our current location) tomorrow morning. Is anyone else with a Colorado/Canyon experiencing this?

vettenuts 08-15-2019 07:59 PM

There is a thread in this forum that is veerrryyy long, but has a lot of information. As I recall, several experienced this issue and there was a link to a GM bulletin to reset the 4wd system.

Treetop Flyer 08-16-2019 03:13 PM

Quote:

Originally Posted by vettenuts (Post 4912278)
There is a thread in this forum that is veerrryyy long, but has a lot of information. As I recall, several experienced this issue and there was a link to a GM bulletin to reset the 4wd system.


Thanks for the response. A GMC dealer did the software update and charged me $58 approximately 5 weeks ago, the first time I had the problem. The second time it happened was yesterday. Since we are now in a different area I took it to a different GMC dealer today. They reset the transfer case codes, did a relearn and charged me $112. I talked to the mechanic. He’s of the opinion GM needs to do another software update for the transfer case module as there is still a problem. I’m now $170 into a problem that currently has no fix.

vito.a 08-16-2019 03:33 PM

I would call the GM national tech line and complain.
Customer Relations Center Details: 1-800-462-8782. Monday - Saturday: 8 a.m. to 9 p.m. (EST) Sunday: Closed.
Maybe in the interim you can disconnect the battery?

vettenuts 08-16-2019 08:01 PM

Found it.

https://www.coloradofans.com/attachm...ng-pdf.174450/

Dutch Star Don 08-16-2019 10:21 PM

"Treetop Flyer".....I tow a 2015 Canyon gas pickup. I have a laminated card that I made with placing the truck into neutral for towing nd out of neutral for driving. On the reverse side, I keep the emergency procedure for getting it out of 4WD, the issue you've been having.

Here it is in a rough format that I printed in Word Perfect.

TRANSFER CASE STUCK IN NEUTRAL

If the transfer case is stuck in neutral after dinghy towing and cannot be shifted out of neutral accompanied with a service 4wd message in the DIC, the following sequence will restore transfer case shifting.

1. With the ignition in the RUN position and engine not running,
2. Open the hood and remove the 30 Amp TREC fuse in the under hood fuse block,
3. Reinstall the 30 amp fuse
4. Continue with "Shifting out of neutral" in the owner’s manual.

Vato 08-18-2019 03:23 PM

Treetop...

I also tow a canyon duramax..

In addition to Don's suggestion, I might suggest when powering up after towing, reconnect the battery first and then go about your other mechanical procedures (disconnecting the hitch, cables, etc) allowing a few minutes for all the electrical gremlins to power up. I switch the transfer case last.

Early on, Don and I found that sometimes if you try to switch the x case to soon it may not transfer correctly.

vettenuts 08-19-2019 08:46 AM

Quote:

Originally Posted by Vato (Post 4916108)

In addition to Don's suggestion, I might suggest when powering up after towing, reconnect the battery first and then go about your other mechanical procedures (disconnecting the hitch, cables, etc) allowing a few minutes for all the electrical gremlins to power up. I switch the transfer case last.



I do the same as you can hear different things under the dashboard rebooting for a few minutes after battery reconnect.

Superrv 08-25-2019 03:48 PM

Hey guys, just started towing my canyon. I agree its a bit complicated of a process. QUick question. Which key turn is the accessory. I noticed mine has three clicks
Turned all the way off.....100% off key is removable
1st click radio and electrical turns on
2nd click ac blower, glow plugs, etc come on
Pushing after that starts the vehicle

From what I just stated which click or do you use when flat towing.

vettenuts 08-26-2019 09:53 AM

One position (Acc) beyond where you can pull the key. Since the battery is disconnected, not sure it matters other than keeping the key from falling out.

Vato 08-26-2019 11:30 AM

Right Vette

The purpose is to unlock the steering wheel. turn til it unlocks. don't matter beyond that

Granite17 08-27-2019 06:47 PM

Agree! First click is all you need so you unlock the steering wheel.
Then hit the battery kill switch.

The procedure is rather cumbersome and each time I felt like I was missing something or forgetting something. Even though I following step by step instructions.

I ended up buying some of the reminders that fit around the steering wheel and labeling them.
I tag the wheel each time I complete the task .
-4 wheel drive in neutral
-shifter in neutral
-parking brake off
-battery disconnect
I guess Im OCD but it works for me.

vettenuts 08-28-2019 06:46 AM

I prefer to pull the key, wait until the interior lights are off, then disconnect the battery. If the key is in the ignition the computer begins its wake up sequence and I prefer the electrons are fully asleep.

Superrv 08-28-2019 07:49 AM

Quote:

Originally Posted by Granite17 (Post 4929898)
Agree! First click is all you need so you unlock the steering wheel.
Then hit the battery kill switch.

The procedure is rather cumbersome and each time I felt like I was missing something or forgetting something. Even though I following step by step instructions.

I ended up buying some of the reminders that fit around the steering wheel and labeling them.
I tag the wheel each time I complete the task .
-4 wheel drive in neutral
-shifter in neutral
-parking brake off
-battery disconnect
I guess Im OCD but it works for me.


You can’t be ocd enough with this process. I’ve learned easiest way to catch a problem is have your wife or whoever drive it for 100 feet while you walk alongside. You’ll catch any issue almost immediately

Finance 08-28-2019 11:52 AM

Shifter in Park while towing.

Shifter in neutral while shifting the transfer case.

Granite17 08-28-2019 04:26 PM

Quote:

Originally Posted by Finance (Post 4930873)
Shifter in Park while towing.

Shifter in neutral while shifting the transfer case.



You are absolutely correct! Thanks for catching. Trans shifter
in park.

Without my cheat sheet I screwed up already.

Granite17 08-28-2019 04:30 PM

Quote:

Originally Posted by Superrv (Post 4930525)
You can’t be ocd enough with this process. I’ve learned easiest way to catch a problem is have your wife or whoever drive it for 100 feet while you walk alongside. You’ll catch any issue almost immediately



Absolutely! Once were all hooked up, I jump in the RV and my wife verifies brake lights and turn signals work ( we’ve caught where
I reversed the plug and left signal comes on instead of right)
Lastly , i pull ahead slowly and she
verifies all wheels are rolling.
100% of the time, every time!

Dutch Star Don 09-04-2019 10:53 PM

Here is my cheater that I laminated and keep in the passenger seat rear pocket.

TO TOW:

1. Start engine and shift transmission to Neutral “N”
2. Shift transfer case to Neutral “N” (Hold at least 15 seconds)
3. Shift transmission to Drive “D” and insure transfer case is in “Neutral”, then turn key to “ACCESSORY”.
4. Shift transmission to Park “P” and turn key to “OFF”.
5. Wait 30 seconds and restart.
6. Shift transmission to Drive “D”, turn key to “ACCESSORY”.
7. Disconnect battery.
8. Shift transmission to Park “P” (Leave key in “ACCESSORY”).

TO DRIVE:

1. Turn ignition to “OFF”.
2. Connect battery.
3. Wait 2 minutes.
4. Start engine and shift transmission to Neutral “N”, wait 30 seconds.
5. Shift transfer case to 2WD.

KTM251ss 09-06-2019 09:40 AM

Why park?
 
I cannot find anywhere in the manual where to leave the transmission in, so why park vs neutral?

Dutch Star Don 09-06-2019 11:41 AM

Look under Towing, subsection, Recreational Towing.

KTM251ss 09-06-2019 05:44 PM

Where does it say this?
 
2 Attachment(s)
CAn you show me where it mentions where the gear selector should be in park? This is from the owner manual.

Granite17 09-06-2019 06:51 PM

In my 19’ manual, pg 196 clearly states in step # 9: “Place the transmission shift lever in Park”!
There is 2 sections in your manual
that talk about this. Check them both.

Dutch Star Don 09-07-2019 12:05 AM

This is from page 328 of my 2016 GMC Canyon Ower's Manual......Note step #9

328 Vehicle Care

{Warning Shifting a four-wheel-drive vehicle's transfer case into N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). You or others could be injured. Set the parking brake before shifting the transfer case to N (Neutral).
To dinghy tow:

1. Position the vehicle being towed behind the tow vehicle, facing forward and on a level surface.

2. Securely attach the vehicle being towed to the tow vehicle.

3. Apply the parking brake and start the engine.

4. Shift the transfer case to N(Neutral). See “Shifting into N (Neutral)” under Four-Wheel Drive 0 225ii. Check that the vehicle is in N (Neutral) by shifting the transmission to R (Reverse) and then to D
(Drive). There should be no movement of the vehicle while shifting.

5. Shift the transmission into D (Drive). Turn the engine off. Then shift the transmission into P (Park).

6. Wait for at least 10 seconds, then restart the engine.

7. Shift the transmission to D (Drive), then turn the engine off again.
Caution
Failure to disconnect the negative battery cable or to have it contact the terminals can cause damage to the vehicle.

8. Disconnect the negative battery cable at the battery and secure the nut and bolt. Cover the negative battery post with a non-conductive material to prevent any contact with the negative battery terminal.

9. Shift the transmission to P (Park). Caution If the steering column is locked, vehicle damage may occur.

10. Move the steering wheel to make sure the steering column is unlocked.

11. With a foot on the brake pedal, release the parking brake. Keep the ignition key in the towed vehicle in ACC/ ACCESSORY to prevent the steering column from locking.

vettenuts 09-07-2019 06:37 AM

Quote:

Originally Posted by KTM251ss (Post 4944871)
CAn you show me where it mentions where the gear selector should be in park? This is from the owner manual.


There was a thread on this when the 2019's first came out. For whatever reason, Chevy made some changes to the owners manual and made what was perfectly clear in the 2018 manual clear as mud in the 2019 manual. You might want to download the 2018 manual for comparison.

KTM251ss 09-07-2019 08:31 AM

And then there is this...
 
1 Attachment(s)
I emailed Chev and asked them, here is what they told me. LOL!

Finance 09-07-2019 11:41 AM

The transfer case oil pump is on the output shaft. It pumps lube oil when towed.

The transmission oil pump is on the input shaft. It does not pump oil when towed. Precisely why only 4wd trucks can be flat towed.

If your transfer case sticks in gear - yeah, it happens- and the transmission is in park, it will be immediately evident when you try to leave. If the transmission is in neutral, it may become evident about 30 miles and several thousand dollars later.

Chevrolet seems to be hiring out their documentation and customer service to the lowest bidder. I’m not going to tell anyone what they should do, but I’ve told you what I do. :wavey:

Granite17 09-07-2019 01:47 PM

Quote:

Originally Posted by KTM251ss (Post 4945509)
I emailed Chev and asked them, here is what they told me. LOL!



Well! I would say left hand doesn’t know what the right hand is doing.
My 19’ manual clearly states shifter in park. If you want I will copy the page for you and send or just pull the manual from online. This is assuming you have a 18’ or 19’.

Remmag 01-23-2020 06:35 PM

2019 Canyon/Colorado Owners Manual
 
3 Attachment(s)
There's a document (#PIP5699) from GMC that addresses this dated 01/13/2020. I've tried to attach:thumb: Hope this clarifies. Item #7 page 3

setaylor216 01-24-2020 09:39 AM

Quote:

Originally Posted by Remmag (Post 5121415)
There's a document (#PIP5699) from GMC that addresses this dated 01/13/2020. I've tried to attach:thumb: Hope this clarifies. Item #7 page 3

My 2019 Canyon will not shift the transfer case out of Neutral if the transmission is in Park. It has to be off, and in neutral. I tried it while in Park and it does not shift.


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