How to Replace the Key Fob Battery in a GMC Yukon Denali

1. With the key removed, insert a flat, thin object in the center of the transmitter to separate and remove the back cover.
2. Lift the battery out with a flat object.
3. Remove the battery.
4. Insert the new battery with the positive side toward the back cover.
5. Push the transmitter back together.

• Replace with a CR2032 or equivalent battery.
• Replace soon when REPLACE BATTERY IN REMOTE KEY displays in the DIC.
• Do not touch the transmitter circuitry; static from your body could damage it.

Source: 2016 GMC Yukon Denali owner's manual, PDF page 33. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.