2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 195

Shifting Out of Park This vehicle is equipped with an electronic shift lock release system. The shift lock release is designed to: . To shift out of P (Park) use the following: 1. Apply the brake pedal. 2. Move the shift lever to the desired position. If you still are unable to shift out of P (Park): 1. Ease the pressure on the shift lever. 2. While holding down the brake pedal, press the shift lever all the way into P (Park). 3. Move the shift lever to the desired position. If you are still having a problem shifting, then have the vehicle serviced soon. Prevent ignition key removal unless the shift lever is in P (Park) with the shift lever button fully released, and Prevent movement of the shift lever out of P (Park), unless the ignition is in ON/RUN or ACC/ ACCESSORY and the regular brake pedal is applied. . The shift lock release is always functional except in the case of an uncharged or low voltage (less than 9 volt) battery. If the vehicle has an uncharged battery or a battery with low voltage, try charging or jump starting the battery. See Jump Starting on page 6‑49 for more information. 3-57