GMC 2015 Sierra Denali Owner's Manual page 35

2-6 Keys, Doors, and Windows
Battery Replacement
Replace the battery in the
transmitter soon if the REPLACE
BATTERY IN REMOTE KEY
message displays in the DIC.
Caution
When replacing the battery, do
not touch any of the circuitry on
the transmitter. Static from your
body could damage the
transmitter.
To replace the battery:
1. Separate and remove the back
cover of the transmitter with a
flat, thin object, such as a coin.
2. Press and slide the battery down
toward the pocket of the
transmitter in the direction of the
key ring. Do not use a metal
object.
3. Remove the battery.
4. Insert the new battery, positive
side facing up. Replace with a
CR2032 or equivalent battery.
5. Push together the transmitter
back cover top side first, and
then the bottom toward the
key ring.