Keyless Transmitter Low Battery Warning
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The Drivers Message Center will display a warning light if the Keyless Transmitter battery becomes low. Refer to Transmitter Battery Replacement for battery replacement procedures.