• PAC RadioPRO Advanced GM1A-RST Radio Replacement Interface for Select Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab & Saturn Vehicles
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PAC

PAC RadioPRO Advanced GM1A-RST Radio Replacement Interface for Select Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab & Saturn Vehicles

PAC RadioPRO Advanced GM1A-RST Radio Replacement Interface for Select Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab & Saturn Vehicles

$399.00 USD
$399.00 USD
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Before you order

Buy with the right details confirmed

Vehicle fitment must match

Confirm your exact year, model, factory equipment, and any required companion parts before ordering.

Check your vehicle in the MCOR Fit Guide

Professional installation is recommended for this product.

The PAC RadioPRO Advanced GM1A-RST Radio Replacement Interface for Select Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab & Saturn Vehicles is a vehicle-specific data-bus interface for installing an aftermarket radio while retaining the supported factory audio, steering-wheel-control, chime, telematics, and convenience functions identified by PAC.

At a Glance

  • Retains OnStar, supported factory steering-wheel controls, and warning chimes
  • Retains supported standard and premium Bose amplifiers
  • Supports premium-Bose gain and tone adjustment plus real-time audio fade
  • Retains supported rear-seat entertainment and is USB updatable

Exact Vehicle Compatibility

Choose the row that matches your vehicle and factory equipment. The “Compatible When” column identifies required factory features; the “Not Compatible When” column shows configurations that need a different interface or are excluded.

Make Model Years Compatible When Not Compatible When
Buick Century 2004-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Buick Lacrosse 2005-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Buick Rainier 2004-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Buick Rendezvous 2003-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Buick Terraza 2005-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Cadillac Escalade 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Cadillac Escalade Esv 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Cadillac Escalade Ext 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Avalanche 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Cavalier 2000-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Colorado 2004-2012 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Corvette 2005-2013 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Express Van 2004-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Impala 2000-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Malibu 2001-2003 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Monte Carlo 2000-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet S-10 Pickup 2003-2004 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Silverado 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Silverado 2007 Classic model, With OnStar, With Steering Wheel Controls New model, Without OnStar, Without Steering Wheel Controls
Chevrolet Ssr 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Suburban 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Tahoe 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Trailblazer 2002-2009 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Uplander 2005-2008 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Chevrolet Venture 2003-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
GMC Canyon 2004-2011 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
GMC Envoy 2002-2009 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
GMC Savana 2003-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
GMC Sierra 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
GMC Sierra 2007 Classic model, With OnStar, With Steering Wheel Controls New model, Without OnStar, Without Steering Wheel Controls
GMC Yukon 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
GMC Yukon Xl 2003-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Hummer H2 2003-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Hummer H3 2005-2010 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Hummer H3T 2009-2010 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Isuzu Ascender 2003-2008 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Oldsmobile Alero 2001-2004 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Oldsmobile Bravada 2002-2004 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Oldsmobile Silhouette 2000-2004 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Pontiac Aztek 2001-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Pontiac Grand Am 2001-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Pontiac Grand Prix 2004-2008 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Pontiac Montana 2000-2006 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Pontiac Sunfire 2000-2005 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Saab 9-7X 2005-2008 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls
Saturn Relay 2005-2007 With OnStar, With Steering Wheel Controls Without OnStar, Without Steering Wheel Controls

Compatibility & What You Need

  • Main part: PAC GM1A-RST. The part number and factory-equipment requirements must match the application exactly.
  • Application-dependent accessory: PAC GMRVD may be required or useful where stated in the vehicle notes or current PAC instructions.
  • Application-dependent accessory: PAC VS41 may be required or useful where stated in the vehicle notes or current PAC instructions.
  • Aftermarket radio: Sold separately. Confirm it has every input and output required for the factory features you want to retain.
  • Professional installation is strongly recommended for data-bus radio replacement and factory-amplifier integration.

Important Application Notes

  • Vehicle applications and required factory equipment must match the table exactly; OnStar and steering-wheel-control requirements differ among the GM1A models.

Technical Specifications

Brand PAC
Manufacturer Part Number GM1A-RST
Product Family RadioPRO Advanced
Product Type Vehicle-specific radio-replacement interface
UPC 609098826945

Manufacturer Resources

What's Included

  • One genuine PAC GM1A-RST product package
  • Manufacturer-supplied module, harnesses, and connection leads shown for this exact part number

Sold separately: aftermarket radio, dash kit, antenna/camera/USB adapters, optional retention modules, and installation materials unless expressly identified as included.

Fitment disclaimer: Compatibility is not determined by year and model alone. Verify the exact factory radio, screen, amplifier, audio package, connector, vehicle options, firmware, and every required accessory before ordering. Product photos show the listed PAC package; surrounding installation equipment is not included. Contact MCOR Automotive through the chat button for application help.

Why Buy From MCOR Automotive

  • Authorized PAC retailer with manufacturer-backed warranty support
  • Vehicle-specific compatibility help before purchase
  • Professional car-audio integration and installation support
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