2003 Chevrolet Blazer Owner's Manual - Page 72

At times you may notice a decrease in range. This is normal for any remote keyless entry system. If the transmitter does not work or if you have to stand closer to your vehicle for the transmitter to work, try this: e UNLOCK: When you press UNLOCK, the driver's door will unlock automatically, the parking lamps will flash and the interior lamps will go on. If you press UNLOCK twice within three seconds, the remaining doors will unlock. Check the distance. You may be too far from your vehicle. You may need to 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 to determine if battery replacement is necessary. See (BatteryRep/acement"under Remote Keyless Entry System Operation on page 2-5. If youare still having trouble, see your dealer or a qualified technician for service. e LOCK: Press LOCK to lock all the doors. Press LOCK again within three seconds and the horn will chirp for conformation. REAR: When you press the REAR button twice within three seconds to release the rear liftglass, the parking lamps will flash and the interior lamps will go on. If your vehicle has an automatic transmission, the transmission must be in PARK (P) or NEUTRAL (N). If your vehicle has a manual transmission, the parking brake must be engaged. (Remote Alarm): When this button on the key transmitter is pressed, the horn will sound and the headlamps and taillamps will flash for up to 30 seconds. This can be turned off by pressing the remote alarm button again, waiting for 30 seconds, or starting the vehicle. e e & Remote Keyless Entry System Operation If your vehicle has this feature, you can lock and unlock your doors from about 3 feet (1m) up to 30 feet (9 m) away using the remote keyless entry transmitter supplied with your vehicle. 2-5