GMC 2008 Acadia - Manual (Page 301)

Dolly Towing (All-Wheel-Drive Vehicles)
All-wheel-drive vehicles must not be towed with two
wheels on the ground. To properly tow these vehicles,
they should be placed on a platform trailer with all four
wheels off of the ground or dinghy towed from the front.
Dolly Towing (Front-Wheel-Drive
Vehicles Only)
To tow your front-wheel-drive vehicle from the front with
two wheels on the ground:
1. Put the front wheels on a dolly.
2. Move the shift lever to PARK (P).
3. Set the parking brake and then remove the key.
4. Clamp the steering wheel in a straight-ahead
position with a clamping device designed for towing.
5. Release the parking brake.
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