2003 Chevrolet Blazer Owner's Manual - Page 71

This vehicle has one double-sided key for the ignition, tailgate and door locks. It will fit with either side up. If you ever do get locked out of your vehicle, contact Roadside Assistance for help. See Roadside Assistance Program on page 7-6 for more information. Remote Keyless Entry System If equipped, the keyless entry system operates on a radio frequency subject to Federal Communications Commission (FCC) Rules and with Industry Canada. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause interference, and When a new vehicle is delivered, the dealer provides the owner with a pair of identical keys and a key code number. The key code number tells your dealer or a qualified locksmith how to make extra keys. Keep this number in a safe place. If you lose your keys, you'll be able to have new ones made easily using this number. Your selling dealer should also have this number. 2. This device must accept any interference received, including interference that may cause undesired operation of the device. This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause interference, and 2. This device must accept any interference received, including interference that may cause undesired operation of the device. Notice: Your vehicle has a number of features that can help prevent theft. You can have a lot of trouble getting into your vehicle if you everlock your keys inside. You may even have to damage your vehicle to get in. So be sure you have spare keys. 2-4 Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment.