2004 GMC Sierra 1500 Pickup Owner's Manual - Page 133

Shifting In or Out of 4LO Notice: Shifting the transfer case into 4LO while moving at speeds faster than 3 mph (5 km/h) may cause premature wear to the transfer case, and may cause the gears to grind. To avoid causing premature wear, and grinding the gears, do not shift the transfer case into 4LO while the vehicle is moving faster than 3 mph (5 km/h). Shifts into 4LO can be made with the vehicle at a stop, or while slowly rolling about 1 to 3 mph (2 to 5 km/h). Shifting In or Out of NEUTRAL 1. With the vehicle running and the engine at an idle set the parking brake. 2. Place the transmission into NEUTRAL (N). Shift the transfer case in one continuous motion into or out of the NEUTRAL (N) position. Automatic Transfer Case The transfer case buttons are located to the left of the instrument panel cluster. • Shift the automatic transmission into NEUTRAL (N), or with a manual transmission, press the clutch pedal, or shift into NEUTRAL (N). • Shift the transfer case shift lever in one continuous motion into the 4LO position. • When in 4LO do not drive faster than 45 mph. This will reduce wear and extend the life of your transfer case. Use these switches to shift into and out of four-wheel drive. 2-39