Customer Reviews

Crux CS-GMC2 Wiring Interface

Perfect kit for successful installation of after market radio. Instructions are clear and concise.

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Made Installation a Breeze

This worked great when I was installing an older Kenwood headunit in my dad's 2006 Chevy Silverado - seamless integration, very easy to set up/wire up, and chimes/steering wheel controls were maintained without any cutting or splicing. Once this was wired up installing the headunit took about 30 minutes - this crux wiring interface made it SO much easier.

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Great product

Installed in my 2001 oldsmobile alero. At first I purchased the wrong harness only finding out it was the wrong harness after removing old head unit out. Called crutchfield and the rep suggested this wiring harness. I could not be happier with how easy it was to install and how simple the instructions were the new head unit worked first try didnt have to adjust anything. Product works great only thing is it did take alot of the room so everything is packed tight.

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Crux CS-GMC2 Wiring Interface

Super easy to work with.

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Crux CS-GMC2 Wiring Interface

Worked as it should, and I was able to keep my steering wheel controls.

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Worked out great

Easy to wire up, everything was labeled.

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Crux CS-GMC2 Wiring Interface

Arrived quickly, price is high considering what it is but I trust Crutchfield products so here we go.

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Did not work reliably with BOSE amp

I installed this with an alpine ILX W770 in my 2004 tahoe with BOSE. It worked with reduced sound quality for about 2 weeks and then the sound would randomy quit working, I would let the truck sit overnight and then it would work while I drove to work but not when I drove home from work. Tried another amplifier and that did not fix the issue, the head unit lights up and every function works but the speakers just pulse static. I do not think the CRUX box is correctly communicating with the amp

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Crutchfield response on 4/15/2025

Once we saw this review, our Tech Support specialist, AJ, reached out to Andrew to help. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Crux CS-GMC2 Wiring Interface

It installed quickly and easily works great

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Crutchfield response on

wiring confusion

I purchased this crux interface to install in an SSR with a new modern radio. This radio is difficult to install because of the passenger air bag. After installing it I wanted to test it before buttoning it up, all functions worked except the rear-view camera. I went over the wiring over and over and could not get it to work in reverse. I called Crutchfield and spoke to an advisor, and she decided the problem was due to the vehicle being standard shift not automatic. One wire did not have to be connected the way I interpreted the instructions. after running another wire from the backup bulb this is the second one directly to the radio it worked. She did a great job thank you again!

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Works perfectly. All factory controls work on new stereo.

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I can't recommend the CRUX interface.

Here's my opinion based on my experience installing a receiver with this interface. Personally I think it's junk. It did not allow my car's retained accessory power to function as it should. No matter what I did, I couldn't get it right. Normally in a GM car, when you turn the car off and open the door the receiver turns off. After the Crux install the radio wouldn't turn off when it should. The radio would eventually turn off when the dome light went off. When you'd open the car door the receiver would turn on, even though the car wasn't running. Yes, i did install this with the battery disconnected. For whatever reason I couldn't get this interface to "shake hands" with the car's computer and to function as intended. My other issue with this interface is the sound quality. My son's car has the factory Monsoon speakers. While they aren't the best speakers in the world, they do sound pretty darn good. When I installed my son's new Boss receiver with this interface the sound quality dramatically decreased. My son was quite bummed out about this. I was bummed out myself as this was supposed to be an awesome Christmas present. After all the issues with this Crux interface, Crutchfield ended up sending us the more expensive PAC interface. Holy cow! What a difference! The PAC interface sounded MUCH BETTER and instantly put a smile on his face. Even if you don't need the features of the more expensive PAC interface, I'd recommend it for the sound quality al

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Crux CS-GMC2 Wiring Interface

It's exactly what I needed. I'm very satisfied with my purchase.

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Made for easy install

This made for an incredibly easy install on my 04 Yukon XL SLT (Bose). The steering wheel controls do stuff, even if it's not quite what you expect. I just installed it last night, so I still need to play, but it seems that my volume control toggles between inputs, going up on the seek button skips to the next song, and going down turns the volume down. I'm just glad they're not dead buttons. None of this really matters, since the head unit is right there a few inches away, and I opted to get a Sony with actual buttons.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Most steering wheel functions work

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Perfect Fit

This made installing my headunit a breeze for someone who has never done this before.

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Perfect Interfacing

I had a older radio i took out of another car and i wanted to put it in my truck, so i bought this harness and some new speakers and I am very impressed. The audio quality is very good and all the steering wheel controls work, including making the "seek" button skip songs on bluetooth.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Great service Great product Fully Satisfied

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Crux CS-GMC2 Wiring Interface

Works perfect

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Crux CS-GMC2 Wiring Interface

Easy install. Worked great.

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Easy to wire

Easy to wire up. Had no problems. Added closed end crimp connectors and heat shrink to make a clean installation.

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Crux CS-GMC2 Wiring Interface

Great product

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Was really easy to install I've personally never installed a radio let alone one with steering wheel controls. Looked up tutorials on YouTube, went wire to wire, and had everything up and running.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Exactly what I needed when I couldn't find it anywhere else.

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Crux CS-GMC2 Wiring Interface

Very easy to wire to the radio connector, works great.

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Great for the Money

Works great, does not support old ONstar or front to rear fading with BOSE but was Plug and Play!

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Crux CS-GMC2 Wiring Interface

Quick fast and easy to use :-)

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Perfectly Described And Fit Product

Everything fit perfectly and was displayed correctly. I have personally never bought from Crutchfield before but I am glad I did! I will be back for future parts without a doubt.

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Crux CS-GMC2 Wiring Interface

A must have to ease installation of aftermarket head unit into original equipment wiring, simply plug and play, worth its weight in gold!!

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Crux CS-GMC2 Wiring Interface

Wiring was easy

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

works great

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Crux CS-GMC2 Wiring Interface

Worked exactly as described on my 2004 Gmc Yukon SLT

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Crux CS-GMC2 Wiring Interface

Nice to have to regain steering wheel controls.

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Excellent choise

Was used on a 2005 Tahoe existing Bose system and everything works perfect.

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Crux CS-GMC2 Wiring Interface

Easy to install no mess and works great love the adjustable tone

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Crux CS-GMC2 Wiring Interface

Defective can't use

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Crutchfield response on 4/29/2024

Adam contacted our Tech Support team, and they got a replacement on the way immediately. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Crux CS-GMC2 Wiring Interface

Easy to install and works great.

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Crutchfield response on

Bonney lake

I installed this today along with my pioneer deck. Everything works except the interior lights won't turn off. And the stereo sounds shuts off intermittently.

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Crutchfield response on 4/22/2024

Once we saw this review, our Tech Support specialist, Evan, reached out to William to help him further. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Crux CS-GMC2 Wiring Interface

If fit and worked my my truck. No issues

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

User manual has as little information about connecting everything together. There's a couple wires that I'm not sure what to do with, and as far as the instruction manual is concerned they don't exist.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Easy install and works great

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Crux CS-GMC2 Wiring Interface

Thanks for the info on why my new Panasonic radio would not work i am a little green around the gills when it comes to this modern electronics. They did not tell me that i would need a interface when replacing my factory radio with a after market stereo but every thing works as it should Thank you.

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Not reliable

First one broke just after return window, called to no avail, bought new one which drained my battery every night. Feature did work when working

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Crutchfield response on 3/27/2024

Once we saw this review, our Tech Support team reached out to David to help him further. We'll either help him get the interface working correctly or help him return it for an exchange under warranty.

C6 Corvette Solution for no speaker hiss!!

FINALLY fixed the hiss/feedback issue I was having with my C6 Corvette with Bose. For some reason, the popular Pac interface did not work without a very loud hiss coming from the speakers... This Crux adapter was the perfect solution, and steering wheel controls worked first time! This unit is also cheaper.... win/win.

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No Brainer

Too easy, maybe make it more obvious some factory plugs will not be reused.

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Works fine for me

Works just fine in 09 Corvette without Bose. Has a slight bit of floor noise, but once the car is running you won't likely hear it. Not Cruthfield's fault, but the head unit I bought needs a speed sensor input for CarPlay to work and I didn't know that. So if you are going to need that, get the more expensive interface that includes the speed sensor wire. Otherwise, seems to be good stuff at a price well below other units on the market.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Good price and good quality product. Very easy to install. Everything is plug and play or color coded

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Crux CS-GMC2 Wiring Interface

Nice unit

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Crux serving up garbage.

Just wired mine up. doesn't work! Complete waste of money! Alpine head unit. Last crux module was dumping a bunch of feed back into the radio. sweet whine while driving. Ordered this garbage to replace the previous garbage and this piece of junk doesn't work at all. With this trash connected it pulls cluster gauges down ( gas gauge to empty). last money crux will get from me.

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Crutchfield response on 2/5/2024

We're sorry you're having issues with your wiring interface. If you purchased this product from Crutchfield, feel free to contact our Tech Support team. They can help you solve the problem or set up a return within 60 days of purchase. Lifetime tech support comes with every Crutchfield purchase.

poor quality control. Doesnt work from factory.

After spending close to 6 hours on this item, found out via Crutchfield's support that the Crux cs-gmc2 was pinned out wrong. One of the molex adapters was sending negative feed through my data wire. This Junk could of fried out my entire truck through the mistake of the factory who made it. 42 minutes on support. The individual i talked to was really nice and professional and was able to help troubleshoot everything. Had entire cluster break. No temp,voltage, oil pressure or fuel guage. Fuel, battery, abs light was on and the service 4 wheel drive is on now with this plugged in. Installed on a 2005 chevy Silverado. granted, im provided a new one..... Just have to wait now for this while i have my dash all apart.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

There's a lot of wires and looks really intimidating. I had to watch a YouTube video due to the instructions being faded. But in reality, it was super easy and I got to keep the bose system.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Love it simple hook up then plug and play. Works like a charm

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Easy wiring interface

Wired up in about 30 minutes using the crutchfield wiring guide included with my kit. Very easy to follow. Twisted the wires together then crimped and shrank the heat tubing on the connector. The chime rings up when you turn on the key so that is an indication that power is going to the connector.

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Great product

Worked great no problems what so ever. I'm going to order another one for my other GMC truck.

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Crux CS-GMC2 Wiring Interface

Since I already owned the deck I was able to just purchase this wiring interface. It was simple to install and works great.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Easy to connect and worked as advertised

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Crux CS-GMC2 Wiring Interface

Works as it's designed. Thanks for keeping my steering controls in operation

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Crux CS-GMC2 Wiring Interface

Perfect fit and kept steering wheel controls for 2004 Suburban. Completed radio swap in 30 mins using this.

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Does the job!

Works great! I installed this in my 2004 Silverado with Bose system. Install was relatively easy. I did have to call tech support with two questions to make sure I was wiring it correctly because the instructions weren't as great as I would have hoped. But tech support was great to deal with. It's a little bit expensive in my opinion, but it works so that's all I care about. I haven't hooked up the steering wheel control interface because there are zero instructions on how to do so, so I guess I need to call tech support back for that again.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

It is as advertised, makes the job easie.

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Perfect

Worked like a charm on my 2005 Suburban with Bose stock system.

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Crux CS-GMC2 Wiring Interface

Product was exactly as described and works well.

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Crux CS-GMC2 Wiring Interface

paid extra for the set up completed.... Perect, 20 minute install

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Crux CS-GMC2 Wiring Interface

Very disappointing with this product. I purchased it to put an alpine head unit in my 05 Escalade after purchasing and making the installation I find out I have no front to rear Feder anymore for my speakers. Very disappointing.

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Crutchfield response on 11/1/2023

Once we saw this review, our Tech Support specialist, Gage, reached out to Les to help with his interface. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

03 Yukon's best adapter

Worked perfectly for my 03 Yukon

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Crux CS-GMC2 Wiring Interface

Made the install easy

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Crux CS-GMC2 Wiring Interface

So easy. Literally plug and play. Made my installation seamless.

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Made things simple.

Very easy to use and plenty of videos to help out.

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Awesome product great company

This interface works flawlessly. I finally have my steering wheel controls working since the previous owner put in a radio without an interface. Instructions are very clear and easy to read not to mention the customer service is amazing.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Works great - just as advertised

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Crux CS-GMC2 Wiring Interface

Worked great, was plug and play with the exception of needing to solder a new plug to the back of my radio other than that works with my 06 trailblazer SS good

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

having this wiring interface made everything easy to plug in.

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Hreat Interface

Great little unit. Allows me to retain my factory Bose amplifier and speakers all while maintaining steering wheel controls.

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Crux CS-GMC2 Wiring Interface

This module was very easy to install and worked perfect to keep steering wheel control features and key chime working correctly in my 2008 Chevrolet Trailblazer. Would highly recommend.

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Perfect Solution for Factory Chime Integration

This interface worked exactly as described in my 2007 Chevrolet Corvette Z06 with my new Pioneer Media Receiver. Chime volume control is a nice feature that improves on the factory's tone.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Nice wiring harness Made the install easier

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Worked to perfection, made stereo installation a breeze

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Crux CS-GMC2 Wiring Interface

The CS-GMC2 Wiring Interface that I purchased was a great choice to use for wiring a new Jenson stereo in my Suburban.It gave me all the controls from my steering wheel and made my Bose system easier to wire.

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Doesn't Work With Bose

I just finishing soldering installing this in my 06 Yukon XL Denali. It only has the harness to connect to the main harness, not the secondary harness that the Denali uses with Bose. So only 4 speakers work out of the 7 including sub. Will have to try and contact support to get the right part even though this is what was said to fit my vehicle. Also, not having tech support after 5pm PST is kind of a b

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Crutchfield response on 7/12/2023

We're sorry Curtis had problems during his interface installation. He contacted our Tech Support team for help. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Always there when you need them

Ran into what I thought was a problem, called the guys at crutchfield and they walked me through steps to solve the issue (I blew a fuse) Hands down the best company to buy anything you need for your car stereo. Not only is it top quality, someone actually answers the phone and will walk you through any problems. I recommend Crutchfield to everyone for this exact reason. They know they're sh*t! ????????

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

combine this with the ready harness service and its almost plug and play. you will need to connect the swc to the module.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Was advised about 15 min into the install that it has come to their attention that a part in the install kit had caused issues for prior customers and the fix would be another $30. Unacceptable, but I paid it because it was a birthday gift for my grandson and he was excited.

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Crutchfield response on 7/5/2023

We were sorry to hear about Trudy's experience with our Installation team. She opted to return this interface. Purchases from Crutchfield can be returned or exchanged within 60 days.

Crux CS-GMC2 Wiring Interface

2004 Chevrolet Tahoe Had an issue with this kit. Called customer service and they walked me through it. Works like a charm. Highly recommend this kit if you are installing an aftermarket stereo to retain your factory amp and steering wheel controls.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

The interface was exactly as advertised. Great product and easy to install.

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Crutchfield response on

wire harness

well made product, fast delivery and easy to follow instructions

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Crux CS-GMC2 Wiring Interface

Worked perfect for my 06 Avalanche

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Crux CS-GMC2 Wiring Interface

Exactly what I needed. Price was better than the other sites I looked at too!

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Crux CS-GMC2 Wiring Interface

Works but could not get the steering wheel buttons to work after a call with Crutchfield we had to custom program the buttons, and was able to get this resolved, but only for four of the five buttons. The Crutchfield tech was awesome to work with.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Great description and very fast shipping

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Worked perfectly!!!

Worked perfectly! Made the installation super easy and very quick.

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Crux CS-GMC2 Wiring Interface

After two tries could not get to work properly with 2003 Hummer H2 bose system

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Crutchfield response on 4/17/2023

Once we saw this review, our Tech Support specialist, Christol, reached out to Frank to help him further. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Crutchfield Makes This Easy

Bought my 2005 GMC Sierra years ago, and I have been battling trying to get the steering wheel controls to work with different aftermarket modules, while leveraging the original aftermarket harness that came with the truck. I couldn't be any more satisfied after this weekend when I hooked this kit up and immediately had steering wheel controls again!!! Super easy, and straight forward to wire up, and it made the truck's chime feel much more modern from that old raspy box I was using. 100% would recommend!

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Worked great easy to install.

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Crutchfield response on

No steering when control

It works fine but I bought it to retain my steering wheel controls but it didn't. So paying that much extra for it to not do what is supposed to is kinda a downer, but it does everything else great.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Item worked exactly as described. Following a YouTube link I purchased what turned out to be a counterfeit wiring interface for the same price as found here, not knowing it was counterfeit. Lost on that one after it was junk and purchased this one. This one worked like a charm!

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Made it easy to install the aftermarket kenmore radio. No fault to the instructions, but I failed to read about the setting positions and had to remove and reinstall the radio.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

These products worked great.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

I give it 4 stars only because someone didn't land the red hot wire to the radio harness. Oakley walked me thru this issue and had it resolved in 15 minutes. I just move the hot wire to the correct connection and the radio was up and operational. I am really impressed with Crutchfield's customer service. Outstanding!!!

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Crutchfield response on

Kept all my steering wheel controls working with my new radio

Worked as advertised! This Crux interface arrived already wired in to the harness with all the right connections as part of the Crutchfield Ready Harness service I paid for. They did all the thinking and made it ready to go. There are DIP switch settings that need to be set for the system you are installing. The switches were already set to the correct positions for me as part of that service. Not that doing that part is hard, but hey... Nice they took care of everything to make it just work when I got it. The interface did exactly what was advertised. It maintained the factory steering wheel control (SWC) functions on my 04 Chevy Tahoe. It all works like it did from the factory. Was it an absolute necessity? No. It sure is nice, though!!!

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Crutchfield response on

Best harnesses

Great harness, good quality

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So easy

Easier than I ever thought....right parts first time

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Crux CS-GMC2 Wiring Interface

deffinatly plug and play

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Tech Support

What a joke my order was. After wiring up this adapter found my steering control wouldn't work. Called Crutchfield tech support for help. Tech didn't know anything about my head unit or the Crux adapter and told me to call Crux tech support. Paid extra thinking I'd get product support. Would NOT ever buy from Crutchfield again. It was a joke.

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Crutchfield response on 9/20/2022

We were sorry to hear about this Wyn's experience with our Tech Support team. We're forwarding this on to our Tech Support supervisors, so they can look into it. We strive to provide the best service, before, during, and after your purchase, and it looks like we missed the mark this time. We hope he gives us another chance to prove we're the best in the business.

Crux CS-GMC2 Wiring Interface

Works great and made it easy to install my new CD player.

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Easy install, comes with absolutely everything needed to keep steering wheel controls and chimes, which the sound level is adjustable!!

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Crutchfield response on

Crux CS-GMC2 Wiring Interface

Highly recommend harness unless you are a skilled installer. Plug and play made easy!

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