The key fob battery can be used for GM OE Keyless Entry Remotes. The CR2032 battery is found in model years 1996-2015 Cadillac CTS key fob remotes; check the key fob battery currently in your remote to ensure you are ordering the correct replacement.
ACDelco CR2032 Keyless Entry Key Fob Battery is a long lasting 3 volt lithium battery. Grab yours today on Amazon for around $6.99 plus shipping and handling.
ASIN: B00NWF5JPG
OEM Part Number: 12538938
Battery Size: CR2032