0ur opinion: :XM Direct is a two-part system (Universal Tuner Box and Smart Digital Adapter or Cable) that integrates directly with your satellite radio ready car stereo and allows you to use a car stereo's existing functions to control the XM service.PR0DUCT FEATURES:Allows XM service to be seamlessly installed into the interface of satellite radio ready car stereo;Works with Universal Tuner Box to control XM channels using your existing GM car stereo controls;Doesn't change your car's interior;lnstalls easily.
:lf your new vehicle has a factory-installed XM satellite-ready radio, you're halfway on the path to enjoying more than 150 channels of all-digital satellite entertainment. Now you can finish the job with the Terk XM Direct adapter kit. Compatible with select General Motors vehicles, this XM Direct kit includes everything you need to play XM over your compatible factory stereo--specifically, an XM universal tuner box, a roof-mount antenna, a smart digital adapter, and all the requisite cables. The components integrate directly with your XM satellite-ready car stereo, letting you control the XM features through your stereo's existing buttons and knobs.
The XM Direct is also notably compact, installing discreetly behind the dashboard to maintain an uncluttered appearance. Perhaps just as convenient are the plug-and-play connections, which make installation a breeze. The only slightly tricky item is the micro antenna, but even that is straightforward, with a magnetic mount that attaches securely to the outside of your vehicle. The adapter cable even includes a pass-through for keeping an extra component, such as a CD changer, connected to the system.
So why pay the dealer to install your XM radio system when you can do it yourself? The universal tuner box measures 3.81 by 1.38 by 4.38 inches (W x H x D) while the adapter checks in at 3.12 by 3.62 by 1.12 inches. The antenna cable, meanwhile, is 19.75 feet long. The bundle is backed by a one-year warranty.
Note: You must subscribe to XM satellite radio and own a General Motors vehicle with a satellite-ready car stereo to use this adapter kit. What's in the Box Universal XM tuner, magnetic micro antenna with 19.75-foot cable, XM channel guide, smart digital adapter, 36-inch DlN cable, 15-inch cable harness, 37-inch RCA cable, quick start manual, installation guide.
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Testimonials
Average Buyer Rating:

Buyer's feedback: 
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* Great Product, Easy Install ...
Works great with the factory radio system. Very easy to install if you know how to get to the back of your factory radio. It is a lot easier having the XM built into the factory radio instead of using an external tuner. I had it installed in my 2005 Chevrolet Impala LS and used the steering wheel controls and radio presets flawlessly.
Buyer's feedback: 
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Sweet!
I am very happy with this XM tuner. I had an external XM before and I seldom used it. Now that it is incorporated right into the factory radio, I use it all the time. Thanks terk and amazon!!
Buyer's feedback: 
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* 10min instal ...
exellent product very easy to instal & the price! no question the best
Buyer's feedback: 
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GM XM Direct
I purchased this unit to have XM radio in my 2005 Chevy SSR. The product arrived in a timely manner and in perfect condition. The installation was straight forward and it works great. All factory radio controls work and you would think it came with the truck. The price was right. I am very pleased with this purchase.