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Average Customer Rating is 3.7 out of 5 stars:
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Average Attributes Rating:
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4.2 |
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3.2 |
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4.3 |
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4.1 |
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3.9 |
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Quick Comparison:
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Most Helpful Customer Reviews:
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Review by
Kurtis from Baraboo, WI
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I purchased the lock pick and it was very easy to install. It does everything that the sellers say it does. I did notice that the gps doesn't work when its activated. so that's the main thing I dislike about it.
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Review by
Toban from Manitoba, Canada
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This thing is pretty awesome. Easy to install and easy to use. Makes the navigation actually functional as you can input info on the move. Also being able to scroll through the xm categories is pretty handy. I pod input is nice but would be cooler if you could control it from the touchscreen instead of handling the I pod itself. Video on the move is nice for long trips to! I highly recommend it.
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Review by
Ray from Hacienda Heights, Ca
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Unit was easy to install. Small and compact so it easily fit behind the navigation unit. Worked as advertised and best of all it did not interfere with normal system operations.
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Review by
Denali Owner from Hanover, MD
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I have a 2007 Yukon Denali and I have had nothing but problems with mine. I have had it installed since 3/2009. Coastaletech customer service is horrible!! Carlos, the tech support guy is great though. I ordered mine from a 3rd party and Crappy Coastaltech will not warranty it even though it is their product. The 3rd party said I could send it back and they could test it out? How in the hell are you gonna test it out?
My issues are Navigation is flaky, doesn't work consistently. Lately the navigation doesn't know where I am. Sometimes the Override option in the GMX switches from 3 to 2 and screws it all up. My latest issue is when I connect my iPhone 4s it will play the music but won't display anything on the screen. My other bug is now DVDs won't play on the front screen. I have just about had it with this product.
My firmware version is 1.4 but the site says 1.3. When you check the update link, it takes you to a dead page.
This will be my very last purchase from the USELESS company who only cares with selling and not supporting their product. I had an old GMX 320, and I upgraded to the GMX550. I had less problems with that although it had less functionality.
Sonic Electronix offered an RMA to send it back to Sonic and see if they can replicate the problem. I highly doubt they have a 2007 Denali sitting around to test my issues out on, so I passed on it. Now I am stuck with $320 worth of useless junk. I feel like I am using DOS when using my 550, so clunky and not smooth at all.
I am not frustrated as much with Sonic Electronix as I am with Coastaletech. They (Coastaletech) said since I didn't buy it directly from them, they don't honor the 1 year warranty. Coastaletech is absolute garbage. Stay away if you want a product that works 100% of the time, but if you want a product that works off and on feel free to waste your $$ on the GMX550. Hopefully SonicElectronix will stop carrying this product!!
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Review by
Jrdyfocus84 from Napoleonville, la
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I would recommend this to others who are wanting to add a camera input or wanting to bypass nav input while driving or bypass DVD input while driving. I would not recommend this to someone who is strictly looking to add iPod functionality to your system. The iPod functionality is sketchy at best when using steering wheel controls.
Pros: Price for options added, Ease of install
Cons: iPod functionality from steering controls works when it wants to, I can start my truck not touch the iPod and steering controls may work press play turn off truck start again steering controls will not work. Next time I start they may or may not work if it works from the beginning it will work 100% until the next time I try.
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