I was curious about this so when I was at the dealer for service asked the parts manager to look up the part from 2017+ with HDMI. I didn’t get a part number because he told me the price from GM was ~250 I believe which was not worth it for me at this time. Also was unsure if it would be plug and play.
Upgrade '16 Denali to HDMI input from '17 models?
- Thread starter scott6760
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I was curious about this so when I was at the dealer for service asked the parts manager to look up the part from 2017+ with HDMI. I didn’t get a part number because he told me the price from GM was ~250 I believe which was not worth it for me at this time. Also was unsure if it would be plug and play.
atlankford
TYF Newbie
- Joined
- Jan 27, 2018
- Posts
- 6
- Reaction score
- 1
https://www.ebay.com/itm/84144678-Rear-Entertainment-Receptacle-HDMI-MHL-2-USB-2017-Silverado-Sierra/232578728424?fits=Model:Suburban&epid=26010531068&hash=item3626c5c1e8:g:F1kAAOSwySlaHfdn:sc:USPSFirstClass!78669!US!-1
or
https://www.sourceoneautoparts.com/...cle-hdmi-mhl-2-usb-2017-silverado-sierra.html
Part Number 84144678
Can anyone figure a conversion kit?
It has to be plug and play but maybe lose the additional usb and or sd slot. We already know that Blu-ray player is connected to my link via HDMI or similar proprietary cable. This leads me to believe that the 2017 module will plug and play directly. I will order part soon and try it out.
Hey, there, topman118: Read CowboyRoy's post, above. NOTE: "Not plug and play, just checked." CowboyRoy has the 2017 part (new board) and did an in-depth study of its components. You can see the photos and read his observations on Page Two of this very same thread.
I read his post. I should have used the term workable instead of plug and play. The head unit already accepts digital signal(ie Blu-ray player) so therefore there is no need to convert the signal using a DAC. The 2017 board has one extra usb and what appears to be a 6 pin connector instead of a 12 pin like on the 2016 board. I am positive we can make it work but may have to sacrifice a USB. I will find a solution.
I wonder if anyone else is working on a solution. It really is weird they didn't have an HDMI connection years ago... I use an iSimple converter to go from RCA Components to HDMI. Works fine. I use the WiFi hotspot in the car, an Amazon Fire Stick, and I power the Fire Stick with the 110V outlet, although it also seems to work fine powered through the USB port on the back of the center console in my '16 Yukon Denali, even though those USBs only put out, at MAX, 1A, I believe.
Last edited:
TechSupport
Full Access Member
http://www.navtool.com/cadillac-escalade-2015-2017-hdmi-interface.aspx
This is the HDMI add on I use in my 16’ Escalade.
This is the HDMI add on I use in my 16’ Escalade.
atlankford
TYF Newbie
- Joined
- Jan 27, 2018
- Posts
- 6
- Reaction score
- 1
Anyone figure this out yet?
Have not had time. Looking at summer before I start tinkering.
There’s two things to address. An additional USB cable(s) and a different wiring connector for the video input module (I’m working on a pigtail instead of having to re-pin with a new connector).
Working on sourcing the usb cables... There’s an additional one with the center console harness that carries the LVDS signal from the rear video inputs (usb/hdmi), to the front of the console. It then connects with a usb cable in the I/P harness. That’s how far I’ve currently tracked it. I know the signal has to make it to the usb cable that runs up the A pillar (there’s a junction there) to the overhead screen. My guess is a usb y-cable that connects between the A-pillar, center console and DVD player (or HDMI).
I'm jumping in this way late but any reason why we cant use the new harness for this model year and continue to try to trace it back to the head unit, I cant image they made major modifications? I got ahold of a local chevy parts department and they gave me this: GM Lower Console Harness 84094824.
You certainly can. The pin outs on the x300 center console connector haven’t changed. The only thing I haven’t figured out yet is where the additional usb cable in the I/P harness (which connects to the additional usb cable in the console harness) is routed and connects.
My thinking is that it’s a usb y-cable that connects between the console harness, DVD player and usb cable that’s routed down the driver’s A pillar (from the overhead screen). Challenge is that the signal also has to make it through the HMI module as well.
Here’s the schematic for the 2017 rear audio/video inputs. The additional usb cable in the center console goes from the X3 spot on the input adapter to the x301 junction at the front of the console.
Here’s a pic of the 2017 console harness. The added usb is the blue cable.
Sent from my iPad using Tapatalk
Last edited:
The schematic I posted is the 2017 version. The graphic appears to show the older input adapter, but notice the 6 wires vs. 12 plus the additional usb connection.
I added “2017” to that section in my previous post to hopefully avoid confusion.
bowdown916
Member
- Joined
- May 3, 2013
- Posts
- 62
- Reaction score
- 1
subcribe
atlankford
TYF Newbie
- Joined
- Jan 27, 2018
- Posts
- 6
- Reaction score
- 1
Anything on this?
UNICORNDAD
TYF Newbie
- Joined
- Jun 26, 2018
- Posts
- 3
- Reaction score
- 3
Hi everyone. I purchased the 2018 hdmi/hmi module on ebay hoping to fit it in my 2015 Yukon. There was a lot of talk of why it might or might not work. After trying it it definitely is not plug and play :-(. The 2018 model has a 6pin vs the 12pin on the 2015/16 module. I even tried only plugging in the 6 pins into portions of original harness plug(I also reversed just to be sure). Good news is I was able to get one of the USB’s to power using just the single usb plug the 2015 module has.
Does anyone have any ideas how I can get this working?? New harness, pigtail, etc. here’s a few pics of both the models and what I tried. Let’s figure this out!!!!
I can provide more pictures if someone has a possible solution!
Sent from my iPhone using Tapatalk
Does anyone have any ideas how I can get this working?? New harness, pigtail, etc. here’s a few pics of both the models and what I tried. Let’s figure this out!!!!
I can provide more pictures if someone has a possible solution!
Sent from my iPhone using Tapatalk
Last edited:
jmalia1
TYF Newbie
- Joined
- Sep 30, 2017
- Posts
- 6
- Reaction score
- 1
This looks like it may not be possible without changing out the harness. You would need to convert a multi pin audio-video signal to a single pin HDMI. The usb could most likely be setup with a usb splitter, but I think the RCA to HDMI conversion is the real challenge. Knowing the wiring of each of those pins on the harness would be the first step to understanding.. The wiring diagrams above are a bit confusing since they aren't referencing pin locations on the old and new versions, but all on the picture of the 2015 unit.
jmalia1
TYF Newbie
- Joined
- Sep 30, 2017
- Posts
- 6
- Reaction score
- 1
Can you send pictures of the underside of the 2017 and 2015 board?
Hi everyone. I purchased the 2018 hdmi/hmi module on ebay hoping to fit it in my 2015 Yukon. There was a lot of talk of why it might or might not work. After trying it it definitely is not plug and play :-(. The 2018 model has a 6pin vs the 12pin on the 2015/16 module. I even tried only plugging in the 6 pins into portions of original harness plug(I also reversed just to be sure). Good news is I was able to get one of the USB’s to power using just the single usb plug the 2015 module has.
Does anyone have any ideas how I can get this working?? New harness, pigtail, etc. here’s a few pics of both the models and what I tried. Let’s figure this out!!!!
I can provide more pictures if someone has a possible solution!
Sent from my iPhone using Tapatalk
