2012 GMC Canyon Owner's Manual - Page 211

Driving and Operating Shifting from Four-Wheel Low to Two-Wheel High or Four-Wheel High To shift from Four-Wheel Low to Two-Wheel High or Four-Wheel High, the vehicle must be stopped or moving less than 5 km/h (3 mph) with the transmission in N (Neutral) for an automatic transmission or the clutch pedal pressed for a manual transmission. The preferred method for shifting out of Four-Wheel Low is to have your vehicle moving 1.6 to 3.2 km/h (1 to 2 mph). Press and release the Four-Wheel High or Two-Wheel High button. You must wait for the Four-Wheel High or Two-Wheel High indicator light to stop flashing and stay on before shifting the transmission into gear or releasing the clutch pedal. If the Four-Wheel High or Two-Wheel High button is pressed when the vehicle is in gear and/or moving faster than 5 km/h (3 mph), the Four-Wheel High or Two-Wheel High indicator light will flash for 30 seconds but not complete the shift. Shifting to Neutral Use N (Neutral) when you plan to tow the vehicle. See Recreational Vehicle Towing on page 10‑85 for towing instructions. To shift the transfer case into N (Neutral) do the following: 1. Set the parking brake. 2. Start the vehicle. 3. Press the regular brake pedal and shift the transmission in N (Neutral), or press in the clutch for vehicles with a manual transmission. 4. Shift the transfer case to Two-Wheel High. 9-39 5. Press and hold the Two-Wheel High and Four-Wheel Low buttons at the same time for 10 seconds. The N (Neutral) light will come on when the transfer case shift to N (Neutral) is complete. 6. Press and hold the regular brake pedal and shift the transmission to R (Reverse) for one second, then shift the transmission to D (Drive) for one second, or 1 (First) for vehicles with manual transmissions, and let out the clutch to insure the transfer case is in N (Neutral). If the transfer case is not in N (Neutral), repeat this procedure starting at Step 3. 7. Turn the engine off by turning the key to ACC/ACCESSORY. 8. Place the transmission shift lever in P (Park), or 1 (First) for vehicles that have a manual transmission. 9. Turn the ignition to LOCK/OFF.