How to Replace the Key Fob Battery in a Chevrolet Tahoe and Suburban

1. Press the button on the side of the remote key and pull the mechanical key out.
2. Use the mechanical key blade in the slot to remove the battery cover by hand.
3. Pull the tab to remove the seal and reach the battery.
4. Remove the old battery without using a metal object.
5. Insert the new battery with the positive side facing up, using a CR2450 Lithium or equivalent.
6. Place the seal back into the groove around the battery compartment.
7. Snap the battery cover back onto the remote key and reinsert the mechanical key.

• Replace the battery soon if the Driver Information Center displays REPLACE BATTERY IN REMOTE KEY.
• Never pull the mechanical key out without pressing the button.
• Follow the reassembly steps so the remote key is sealed properly.

Source: 2026 Chevrolet Tahoe and Suburban owner's manual, PDF page 14. 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.