Energizer Battery - CR2032 - https://amzn.to/2DecUq6

GM P/N: 22856930 , Strattec PN 5931856
FCC ID: NBG009768T Both PN and FCC ID can be found inside on the back of the remote case. Freq: 315 Mhz
This remote also fits:
13 14 Cadillac ATS
13-14 Cadillac XTS
FCC ID: OUC6000223
Fits 07-14 Caddy Cadillac Escalade