2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 142

See your dealer if a replacement key or additional key is needed. Notice: If you ever lock your keys in the vehicle, you may have to damage the vehicle to get in. Be sure you have spare keys. If you are locked out of the vehicle, call the Roadside Assistance Center. See Roadside Assistance Program on page 8‑7. Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment. If there is a decrease in the RKE operating range, try this: . Check the distance. The transmitter may be too far from the vehicle. Stand closer during rainy or snowy weather. Check the location. Other vehicles or objects may be blocking the signal. Take a few steps to the left or right, hold the transmitter higher, and try again. Check the transmitter's battery. See "Battery Replacement" later in this section. If the transmitter is still not working correctly, see your dealer or a qualified technician for service. . Remote Keyless Entry (RKE) System See Radio Frequency Statement on page 8‑21 for information regarding Part 15 of the Federal Communications Commission (FCC) Rules and RSS-210/211 of Industry Canada. . . 3-4