If you're the owner of a newer GM vehicle, you could very well have a GMLAN equipped system. If that's the case, then the GM SiriusConnect SIRGM1 adapter to convert your headunit to receive Sirius (instead of XM) won't work for you.

Enter the SiriusConnect GML-SC1 GM-LAN Vehicles. It allows for control and playback of Sirius through the GM-LAN headunit and connects to the new line of SiriusConnect tuners like the SC-C1 Universal Vehicle Tuner, and the SC-VDOC1 Universal Vehicle Dock.

It's compatible with many 2006+ GM-LAN vehicles, in both 11-bit or 29-bit versions, and maintains all factory accessories.

Available in Spring 2007. 

The SC-C1 SiriusConnect Vehicle Tuner is a compact component that can seamlessy integrate with any Sirius-Ready or SAT Radio Ready headunit when combined with a specialty SiriusConnect interface bus translator.

Features include:

• Compact size for hidden installation
• Interface cable integrates power, audio and control through a single connection
• Compatible with the next generation of SiriusConnect interface translators

The SC-C1 Kit includes:

• A mini magnetic antenna
• SiriusConnect interface cable
• Removable mounting plate

Like the SiriusConnect Universal Vehicle Dock, this is all part of Sirius' next-generation SiriusConnect setup for vehicles.

The SiriusConnect Universal Vehicle Tuner SC-C1 with go for an MSRP price of $49.95 and is expected to be available in Spring 2007.