2008 GMC Sierra 1500 Pickup Owner's Manual - Page 81

Remote Keyless Entry (RKE) System Operation The vehicle's doors can be locked and unlocked from about 3 feet (1 m) up to 65 feet (20 m) away with the Remote Keyless Entry (RKE) transmitter. If your vehicle has the remote start feature you can also start your vehicle with the RKE transmitter. The RKE transmitter, with the remote start button, provides an increased operating range of 195 feet (60 m) away. However, the operating range may be less while the vehicle is running. As a result, you may need to be closer to your vehicle to turn it off than you were to start it. There are other conditions which can affect the performance of the transmitter. See Remote Keyless Entry (RKE) System on page 2-4. With Remote Start (Without Remote Start Similar) / (Remote Vehicle Start): If your vehicle has this feature, press / to start the engine from outside the vehicle using the RKE transmitter. See Remote Vehicle Start on page 2-8 for additional information. 2-5