GM Service Manual Online
For 1990-2009 cars only

Information on OnStar Dual-Mode (Analog/Digital) Systems

Subject:Information on OnStar® Dual-Mode (Analog/Digital) Systems

Models:2000-2004 Buick LeSabre
2003-2004 Buick Rendezvous
2004 Buick Rainier, Regal
2004-2005 Buick Century
2005 Buick Allure (Canada), LaCrosse, LeSabre, Rainier, Rendezvous, Terraza
2002-2004 Cadillac DeVille, Seville
2003-2004 Cadillac CTS, Escalade Models
2004-2005 Cadillac SRX, XLR
2005 Cadillac CTS, DeVille, Escalade Models, STS
2001-2005 Chevrolet Impala, Monte Carlo
2002-2004 Chevrolet TrailBlazer Models
2003-2004 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe
2003-2005 Chevrolet Cavalier, Venture
2004 Chevrolet Colorado
2004-2005 Chevrolet Malibu, Malibu Maxx
2005 Chevrolet Avalanche, Cobalt, Colorado, Corvette, Equinox, Express, Silverado, Suburban, Tahoe, TrailBlazer Models, Uplander
2002-2004 GMC Envoy Models
2003-2004 GMC Savana, Sierra, Yukon Models
2004-2005 GMC Canyon
2005 GMC Denali, Denali XL, Envoy Models, Savana, Sierra, Yukon, Yukon XL
2001-2003 Oldsmobile Aurora
2002-2004 Oldsmobile Bravada
2003-2004 Oldsmobile Silhouette
2000-2004 Pontiac Bonneville
2003-2005 Pontiac Aztek, Montana, Sunfire
2004-2005 Pontiac Grand Prix
2005 Pontiac G6, Montana SV6, Pursuit (Canada), Vibe
2003-2005 HUMMER H2
2005 Saab 9-7X
2002-2005 Saturn VUE
2003-2005 Saturn ION
2003 Saturn L Series
2005 Saturn Relay
PLUS 2006-2007 GM Passenger Cars and Trucks (including Saturn)
2006-2007 HUMMER H2, H3
2006-2007 Saab 9-7X
with OnStar® (RPO UE1)



This bulletin is being revised to correct the model year range for the Chevrolet Impala and Monte Carlo and update the reference to GM Dealerworld. Please discard Corporate Bulletin Number 06-08-46-008B (Section 08-Body and Accessories).


All 2000-2003 model year vehicles equipped with OnStar® from the list above were built with Analog/Digital-Ready OnStar® Hardware. Some of these vehicles may have been upgraded to Dual-Mode (Analog/Digital).

Certain 2004-2005 model year vehicles equipped with OnStar® from the list above may have been either:

    • Originally built at the factory with Dual-Mode (Analog/Digital) OnStar® Hardware
        OR
    • Upgraded to Dual-Mode (Analog/Digital) Hardware

All 2006 model year and newer vehicles equipped with OnStar® were built at the factory with Dual-Mode (Analog/Digital) OnStar® Hardware.

If a vehicle has Dual-Mode (Analog/Digital) OnStar® Hardware, then the system is capable of operating on both the analog and digital cellular networks, and will not require an upgrade in connection with the cellular industry's transition to the digital network.

In order to verify the type of OnStar® Hardware in a vehicle, type the VIN into the VIN look-up tool, which is available at the OnStar® Online Enrollment website within GM GlobalConnect (for U.S. dealers) or InfoNet (for Canadian dealers).