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(AKA: uPAC-GMC29) iPod and Aux Input Interface Adapter with HD Radio Option for GM 29 Bit GMLAN Factory Radios

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This item has been discontinued

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iSimple Gateway ISGM571

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(AKA: uPAC-GMC29) iPod and Aux Input Interface Adapter with HD Radio Option for GM 29 Bit GMLAN Factory Radios


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The PAC uPAC-GM29 interface is a multi input media device compatible with select 2007-2009 GM radios. The 2 Inputs will support any of the following combinations: iPod/Auxiliary, iPod/HD Tuner (Sold Separately), or Auxiliary/HD Tuner. The iPod input can be used as full control from the radio or full control from the iPod. If a factory radio SAT tuner or DVD video system is present, it will continue to operate. The new and expandable interface is the best way to directly connect your iPod/HD Radio/Auxiliary to the factory radio. Interface allows the user to navigate all text right from the radios display. Then, simply add the PAC uPAC-HDRT HD Radio module to enjoy CD Quality music from FM Stations.

Product Features:
  • Multi-input media device for select GM vehicles with XM Button
  • 2 Inputs will support the following combinations: iPod/Auxiliary, iPod/HD Radio, or Auxiliary/HD Radio
  • iPod can be used with full control from the radio or iPod
  • View artist and song information on the factory radio's display
  • Browse iPod directly from the radio and/or steering wheel controls
  • Retains factory installed SAT Radio
  • Works with both 6-Disc CD Changer radios and navigation radios
  • Compatible with vehicles with factory Rear Seat Entertainment
  • Note: Does not charge iPhone 3G, iTouch 2nd Generation, or Nano 4th Generation
    • The Apple iPhone 3G, iPod Nano 4th Gen, iPod Touch 2nd Gen, and any other newly released iPods can be controlled using the iPod adapter above; however, charging will not be possible unless you purchase the Scosche IFWA PassPORT charging adapter
  • Check the Installation Instructions to see basic instructions for the PAC uPAC-GM29
  • 1-year warranty
Compatible with the following vehicles:
  • Buick:
    • 2008 Enclave
    • 2006 - 2008 Lucerne
  • Cadillac:
    • 2006 - 2008 DTS
    • 2007 - 2008 Escalade/ESV/EXT
    • 2007 - 2008 SRX
  • Chevorlet:
    • 2007 - 2008 Avalanche
    • 2006 - 2007 Monte Carlo
    • 2007 - 2008 Silverado (Non-Classic)
    • 2007 - 2008 Suburban
    • 2007 - 2008 Tahoe
    • 2007 Impala
  • GMC:
    • 2007 - 2008 Acadia
    • 2007 - 2008 Sierra *Non-Classic”, New Body Style
    • 2007 - 2008 Yukon/ Yukon Denali
  • Pontiac:
    • 2007 - 2008 Torrent
  • Saturn:
    • 2007 - 2008 Outlook

Product History:

iSimple ISGM571 thumbnail
(newest, current model)
PAC uPAC-GM29 thumbnail
(previous model, replaced by iSimple Gateway ISGM571)

Product Features

Type of Auxiliary Input
Some harnesses will add a audio input to a factory stereo, while others will add a video. Some will be able to do both. This is what type of input the harness adds to the factory stereo.
Compatible Vehicle Make
Allows you to view only items that are compatible with your vehicle's make. Does not guarantee that it will work with your vehicle year or model.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: PAC uPAC-GM29