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PIE GMLAN-OS1 Onstar Retention / Radio Replacement Adapter


The GMLAN-OS1 radio replacement module allows replacement of factory GM LAN-BUS radios without losing any of the data functions, which are part of the factory radio. In addition, it allows the factory BOSE system* or standard audio system and On-Star to stay functional.


  • Retains BOSE and non-BOSE audio systems.
  • Retains On-Star and a factory door chime – volume adjustable with compatible systems.
  • Maintains a retained accessory power (RAP) –time delay adjustable with factory compatible system.
  • Provides a battery monitor – shuts the system down when low voltage is detected.
  • Includes a phone mute option (negative trigger).
  • Provides an illumination output.

*NOTE: Not compatible with the BOSE Y91 system.

GMLAN-OS1 connects to the factory 14-pin and 16-pin harnesses.

Compatible vehicles include:


  • 2003-2007       Lucerne


  • 2006-2007       DTS


  • 2007               Avalanche2006-2007      Impala
  • 2006-2007      Monte Carlo
  • 2007               Silverado (New Body Style)
  • 2007               Suburban
  • 2007               Tahoe


  • 2007               Sierra (New Body Sierra)
  • 2007               Yukon


Availability: Usually ships the same business day.

GMLANOS1Retail price: $183.90AEI price: $119.99


Please contact us if you have any questions before, during, or after placing an order with us.

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