Touch screen is black but still works . . .

[Tms1989]

In the last month the center touch screen has gone black for a few minutes before coming back on. Well the other day it went black and stayed that way.

I can’t quite figure out what it is. So far I have:

- Disconnected the battery to let the truck reset

- Checked the HDMI cord into the HMI

- Made sure all other connectors are tight

I don’t think it’s the HMI because the Bluetooth, radio and all other features still work. All the buttons under the screen (volume, Menu, etc) still work just fine. Even weirder is the “touch” still works where you can still change the stations by touching the screen where the preset buttons would be on the touch screen.

Any other suggestions before I have it diagnosed?

(2015 Tahoe LT)

 

[Doubeleive]

backlight most likely

 

[Tms1989]

backlight most likely

Does the screen have to be replaced or is there something else?

 

[Doubeleive]

Does the screen have to be replaced or is there something else?

I see lots of new digitizers for sale for around $70 but the backlight will be in the lcd, used ones are typically around $120

 

[ghazallsyria]

If do you want my advice, change the wire that connects HMI and headunit .

This issue has been fixed with me .

 

[ghazallsyria]

 

[lovelylin80]

In the last month the center touch screen has gone black for a few minutes before coming back on. Well the other day it went black and stayed that way.

I can’t quite figure out what it is. So far I have:

- Disconnected the battery to let the truck reset

- Checked the HDMI cord into the HMI

- Made sure all other connectors are tight

I don’t think it’s the HMI because the Bluetooth, radio and all other features still work. All the buttons under the screen (volume, Menu, etc) still work just fine. Even weirder is the “touch” still works where you can still change the stations by touching the screen where the preset buttons would be on the touch screen.

Any other suggestions before I have it diagnosed?

(2015 Tahoe LT)

So I had the same issue brought to gm I had to replace the screen however the new one worked but cut out again they jumped the video cable and it worked they said it was the video cord now I'm trying to find one as gm doesn't even know the part number ugh

 

[lovelylin80]

View attachment 421859

Is this the exact cord needed and where did you get it. Mine seems to be having the same problem and gm can't figure out what part number they need or where to get it

 

[lovelylin80]

In the last month the center touch screen has gone black for a few minutes before coming back on. Well the other day it went black and stayed that way.

I can’t quite figure out what it is. So far I have:

- Disconnected the battery to let the truck reset

- Checked the HDMI cord into the HMI

- Made sure all other connectors are tight

I don’t think it’s the HMI because the Bluetooth, radio and all other features still work. All the buttons under the screen (volume, Menu, etc) still work just fine. Even weirder is the “touch” still works where you can still change the stations by touching the screen where the preset buttons would be on the touch screen.

Any other suggestions before I have it diagnosed?

(2015 Tahoe LT)

Did you find a fix

 

[Tms1989]

Did you find a fix

Unfortunately not yet. The screen worked again for a short while before dying. I put a DVD on the other day and it played on the touchscreen so at this point I’m leaning towards the cord or HMI being bad. I haven’t had the time to try and play with it just yet