Pontiac G8 key fob battery
Every model year listed for the Pontiac G8 has a proven battery. The most common answer is CR2032. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2008-2009Flip key
CR2032
FCC ID OUC6000083Two sites agree: uhs-hardware.com and abkeys.com (checked Nov 1, 2026)
Find CR2032 on Amazon
Changing the battery
Flip key
- Swing the key blade open first. On most flip keys the cell lives in the body behind the hinge.
- Find the seam or small slot on the body (often at the end away from the blade) and twist a coin or small flat screwdriver in it until the cover lifts.
- Swap the coin cell, keeping the same face up as the one you removed, and do not bend the metal contact tab.
- Close it up, check the blade still flips cleanly, and test the buttons at the car.
A CR2032 is 20 mm across and 3.2 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.