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PAC OS2C-CTS Wiring Interface

Connect a new car stereo and retain OnStar®, warning chimes, and the premium amplified audio system in 2003-07 Cadillac CTS or SRX models

21 Reviews | 3 questions - 3 answers

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Item # 541OS2CCTS

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Overview

Our take on the PAC OS2C-CTS Wiring Interface

PAC's OS-2C-CTS interface lets you replace the radio in 2003-up Cadillac CTS and SRX models while maintaining operation of the OnStar® system, warning chimes, and rear parking assist chimes. The OS-2C-CTS will work with standard GM or Bose amplified audio systems. Warranty: 1 year.

PAC's OS-2C-CTS interface lets you replace the radio in 2003-up Cadillac CTS and SRX models while maintaining operation of the OnStar® system, warning chimes, and rear parking assist chimes. The OS-2C-CTS will work with standard GM or Bose amplified audio systems. Warranty: 1 year.

Note: This interface will not work with 2004-06 SRX models with Cadillac navigation radios. You'll lose the factory XM receiver and the ability to fade from front to rear speakers when you install an aftermarket stereo. Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this model is compatible with your vehicle.

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.

Great product Easy to install. Could be a bit better with the instructions especially when wiring with another one of their products, but i would still recommend this to others.

B, Noble, OK

What's in the Box:

  • OS-2C-CTS Radio replacement interface module (for GM vehicles with OnStar)
  • CM1 Chime output module
  • 13" Vehicle harness (OS-CTS)
  • 8" Radio harness
  • Radio Replacement Installation Instructions
  • Chime Module Installation Instructions
Reviews

PAC OS2C-CTS Wiring Interface Reviews

Average Customer Review(s):

(21 Reviews)
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Details

Hands-on research

Product Research

Features
Dimensions

Features

Overview: The PAC OS-2C-CTS Radio Replacement Interface Module allows the installation of an aftermarket radio into select Cadillac CTS and SRX vehicles equipped with OnStar and a factory amplified audio system.

Note: You may use this interface even if the vehicle does not have OnStar, but does have the factory amplified audio system.

Vehicle Compatibility: The PAC OS-2C-CTS Radio Replacement Interface Module supports the following vehicles.

Make Model Year Restrictions
Cadillac CTS 2003-2007 All models
SRX 2004-2006 Only vehicles without factory installed navigation radios

Note: The OS-2C-CTS does not retain the factory XM receiver, you will lose this option when the factory radio is replaced with an aftermarket headunit. Due to the design of the factory amplified system, there is currently no way of fading from the front to rear with an aftermarket radio.

OnStar Compatible: The PAC interface module will maintain operation of the OnStar and factory amplified audio system. OnStar audio will play through the front speakers when active. Your vehicle's OnStar volume will not be adjustable (preset at medium level).

Warning Chimes: The PAC OS-2C-CTS also retains all warning chimes and vehicle rear parking assist chimes.

Steering Wheel Control Compatible (optional): The PAC OS-2C-CTS is compatible with PAC's Steering Wheel Radio Control Interface (541SWIRC, sold separately) for aftermarket radios.

Dimensions

Radio Replacement Interface Module (OS-2C-CTS):

  • Width = 6.455"
  • Height = 1.055"
  • Depth = 2.475"

Chime Output Module (CM1):

  • Width = 2.325"
  • Height = 0.915"
  • Depth = 0.925"

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

for easy installation [ Marcus  May 19, 2017 ]
its what I need to do what I want to do aha [ Tanner  May 05, 2017 ]
After mkt radio [ Shawn P.  Nov 29, 2016 ]
to install my new stereo in my 03 CTS [ Joseph  Nov 26, 2016 ]
Need it for my head unit [ Charles  May 04, 2016 ]
Too hook up a new radio in my car. [ Isidro  Apr 30, 2016 ]
this was part of the recommended kit [ Alex M.  Apr 17, 2016 ]
Cause I want to add subs and amp to my car so need a aftermarket radio [ Jesse  Mar 09, 2016 ]
installer recommended it for us [ Todd  Mar 03, 2016 ]

3 questions already asked

This will depend largely on your vehicle. For details on installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on what you will need for an installation. [ Kenny  May 14, 2016 ]  Staff
Jaime unfortunately not. You loose that feature. That feature only works with oem equipment [ MELVIN  Nov 20, 2015 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Krissy  Feb 24, 2014 ]  Staff
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