Check out my video DIY tutorial for changing a weak or dead battery in the key fob remote control for a 2000, 2001, 2002, 2003, 2004, 2005 and 2006 GM Chevy Tahoe.
2000-2006 Chevy Tahoe Key Fob Battery Replacement Guide
2000-2006 GM Chevy Tahoe DIY Repair & Maintenance Tutorials
These DIY instructions should be the same for other similar General Motors vehicles such as the Silverado, Suburban, Avalanche, GMC Yukon Denali, Sierra, Hummer H2 and Cadillac Escalade.