When dinghy towing a vehicle with an automatic transmission, the vehicle should be run at the beginning of each day and at each RV fuel stop for about five minutes. This will ensure proper lubrication of transmission components.

To dinghy tow the vehicle from the front with all four wheels on the ground:
1. Position the vehicle to tow and then secure it to the towing vehicle.
2. Shift the automatic transmission to P (Park) or a manual transmission into 1 (First) gear and turn the ignition to LOCK/OFF.
3. Set the parking brake.
4. To prevent the battery from draining while the vehicle is being towed, remove the following fuse from the instrument panel fuse block: (DLIS). See Instrument Panel Fuse Block for more information.
5. Turn the ignition to ACC/ ACCESSORY.
6. Shift the automatic transmission to N (Neutral) or a manual transmission to Neutral.
7. Release the parking brake.
Remember to reinstall the DLIS fuse once the destination has been reached.
Caution
If 105 km/h (65 mph) is exceeded while towing the vehicle, it could be damaged. Never exceed 105 km/h (65 mph) while towing the vehicle.

Caution
Towing the vehicle from the rear could damage it. Also, repairs would not be covered by the vehicle warranty. Never have the vehicle towed from the rear.
Dinghy Towing RS Model with Automatic Transmission
Dolly Towing from the FrontCruise Control Description and Operation
Cruise control is a speed control system that maintains a desired vehicle speed
under normal driving conditions at speeds above 40 km/h (25 mph). Steep grades may
cause variations in the selected vehicle speeds.
The following are the main components of the Cruise Control System:
...
Hydraulic Brake System Bleeding (Manual)
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid Effects on Paint and Electrical Components
Caution.
Caution: Only use products that comply with GM specifications and
check manufacturer information respectively. We recommend the use of GM genuine
...
Secondary Air Injection Pump Installation
Install the secondary air injection pump (1).
Loosely install the secondary air injection pump nut (2) and the 2 secondary
air injection pump bolts (4).
Caution: Refer to Fastener Caution.
Tighten the secondary air injection pump nut (2) an ...