Metra GMRC-01 Axxess Non-Amplified/Non-OnStar Interface Harness for Select 2000-2005 GM Vehicles Non-Amplified, Non-OnStar Interface Harness for Select 2000-2005 GM Vehicles Provides a 12V Accessory output Retains R.A.P. (Retained Accessory Power) Used in non-amplified systems or when replacing amplified systems Retains warning chimes using on-board speaker Compatible with 2000-2005 select GM vehicles Reatins chimes using on-board speaker Retains RAP feature Provides 12V accessory output