Metra GMOS-05 00-05 GM DOK/LOK W/ONSTAR
* The GMOS-05 interface is designed to allow RHE user to replace the OEM radio with an after market unit in non-amplified GM vehicles equipped with the DOCK N LOCK style harness and retain FLL functionality of the ONSTAR system as well as all safety and warning chimes.The GMOS-05 will retain the retained accessory power convenience features. This interface has the capability of adjusting chime and ONSTAR volumes as well in addition to these features the GMOS-05 now has the required outputs for the installation of a navigation radio
* For DOCK N LOCK style harness equipped vehicles with non amplified audio systems 200-2005
* Retains ONSTAR with adjustable level output
* Retains chimes with adjustable level output
* Retains R.A.P.
* Navigation outputs now included
* USB update interface compatible.