How to Replace the Key Fob Battery in a Chevrolet Colorado

1. Press the button on the side of the remote key near the bottom and pull out the mechanical key.
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 access the battery.
4. Remove the old battery without using a metal object.
5. Insert a new CR2450 Lithium or equivalent battery with the positive side facing up.
6. Place the seal back into the groove around the battery compartment.
7. Snap the battery cover back on and reinsert the mechanical key.

• Replace the battery soon when the DIC displays REPLACE BATTERY IN REMOTE KEY.
• Do not touch the circuitry on the remote key.
• Never pull the mechanical key out without pressing the button.

Source: 2026 Chevrolet Colorado owner's manual, PDF pages 13, 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.