* These vehicles have a digital amp option. Please reference the "Service Parts Identification" sticker located in the glove box for the RPO code Y91. If Y91 is present, then the vehicle is equipped with
a digital amplifier.
** These vehicles have a digital amp option. Please reference the "Service Parts Identification" sticker located in the glove box for the RPO codes; Y91, STZ, UQS. If Y91, STZ or UQS is present, then the