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.

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!

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.

Why park?
 

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

Look under Towing, subsection, Recreational Towing.

Where does it say this?
 

CAn you show me where it mentions where the gear selector should be in park? This is from the owner manual.

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.

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.

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.

And then there is this...
 

I emailed Chev and asked them, here is what they told me. LOL!

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:

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’.

2019 Canyon/Colorado Owners Manual
 

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