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SIRGM1C Installation Guide
Congratulations on your purchase of the SIRGM1C – the GM
Compatible SIRIUS Satellite Radio Tuner!
Your SIRGM1C is designed replace the factory XM Satellite tuner in select GM
vehicles. The tuner is also compatible with systems that support Satellite Radio
operation but did not come with a tuner from the factory.
Compatibility
The SIRGM1C is designed to be
compatible with select headunits from
2003 ~ 2006 in select vehicles that
operate on the Class-2 Bus. Please
consult the compatibility chart that is
included with this product.
Compatible Headunit Types:
• CD only Headunits*
• CD + Cassette Headunits*
• 6-CD changer Headunits*
• Touch Screen Monitor Headunits
• Non-Touch Screen Monitor
Headunits
*Note that the units must have a
“BAND” button to access SIRIUS audio
modes.
In addition, the SIRGM1C is compatible
with most additional factory audio
accessories that might be included,
such as:
• Rear Seat Audio Control Center
• Rear Seat Entertainment (DVD/
Monitor) System
• Heads up display (HUD)
• Steering wheel controls
Note that the SIRGM1C is not compatible with the factory
satellite radio antenna that might be installed in the vehicle.
You must install a SIRIUS compatible antenna such as the
one included with this product. In addition, some aftermarket
Class-2 bus accessories may cause performance or
interference problems with the SIRGM1C.
Features
The SIRGM1C is designed to emulate
many of the factory SDAR (Satellite
Digital Audio Radio) commands found
in your vehicle.
• Channel Tune (Up and Down)
• Fast Tune (Up and Down)
• Category Search (Up and Down)
• Category Tune (Tune within a
category)
• 12 presets (6 for each band)
• Preset Scan (UP)
Note about features listed; Each GM
radio type operates differently, so
consult the vehicle owners manual for
proper operation methods.
Headunit Display Capability
When the SIRGM1C is installed, it has
the capability to show the following
information on the headunit display.
• Channel Number
• Channel Name
• Category Name
• Artist Name**
• Song Title Name**
**Number of characters displayed
varies by headunit type (8 ~16
Characters). Text Scrolling and/or
Paging is not supported with the SIR-
GM.
Note: Some GM headunits will display “XM1” or “XM2” as
the display source. This information is hard coded in the
headunit design and cannot be changed.