How to Replace the Key Fob Battery in a GMC Acadia Limited

1. Pry the transmitter apart with a thin flat tool such as a flat head screwdriver.
2. Insert the tool in the notch along the parting line, stop when you feel resistance, and twist to separate.
3. Remove the old battery without using a metal object.
4. Insert the new CR2032 or equivalent battery with the positive side facing down.
5. Snap the transmitter back together.

• Replace the battery when the REPLACE BATTERY IN REMOTE KEY message shows in the DIC.
• Do not touch the circuitry, since static from your body could damage the transmitter.

Source: 2017 GMC Acadia Limited owner's manual, PDF pages 27, 28. 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.