Chevrolet 2004 Blazer Owner's Manual page 254

Dolly Towing (Vehicles with Electronic
Transfer Case)
Front Towing (Front Wheels off the
Ground)
Notice: Towing your vehicle from the rear could
damage it. Also, repairs would not be covered by
the warranty. Never have your vehicle towed
from the rear.
If your vehicle has an electronic transfer case, you can
dolly tow your vehicle from the rear only if the front
wheels are on the dolly. Use the following steps to dolly
tow your vehicle:
4-50
1. Follow the dolly manufacturer's instructions to
attach and secure the vehicle being towed to
the dolly and then the loaded dolly to the tow
vehicle.
2. Firmly set the parking brake.
3. Put an automatic or a manual transmission in
NEUTRAL (N).
4. Shift the transfer case to 2HI. See "Electronic
Transfer Case" under Four-Wheel Drive on
page 2-29 for how to shift the transfer case to 2HI.
5. Release the parking brake only after the vehicle
being towed is firmly attached to the towing
vehicle.