Have a black display on your Cadillac CUE system? The first thing to understand is how the system is constructed.
We sell replacement glass touch panels. These panels do not display any content—they simply detect where you're touching so the system can respond accordingly.
It’s very common for customers to experience issues after installation that are completely unrelated to the touch panel itself. These issues can include:
- A black screen
- Greyed-out icons
- Missing temperature readings
-
System messages like “worn tires,” etc.
The touch panel does not control or affect any of these functions.
To test your system:
You can remove the touch panel. If the underlying LCD is functioning correctly, the bright display panel behind it should still be illuminated and visible.
If your screen remains dark, the issue likely lies elsewhere—possibly with the LCD, wiring, or system power—not the touch panel.
So- black screen is unrelated to the touch screen.
Let's learn about the HMI module.
That means Human Machine Interface.
It looks like this and is under your glove box area.
This device is responsible to send video to your Cadillac CUE display
When it doesn't work properly, you get a black screen.
Got it. So what's next?
First- check your battery
If your battery is low or weak, it will not have enough voltage to power up your HMI module. As a result, you will have a black screen.
You will want to have your battery load tested at a local auto parts store. Most stores like AutoZone or Advance will do this at no charge. If the battery is anything but good or healthy, replace it.
Next- pull all 'hmi' or display/radio fuses and reinstall
Check your owner's manual for fuse box locations. Pull any fuse that is related to display or radio and reinstall it. Sometimes this works for customers in a similar position.
Last- if you still have black screen, it is a hmi defect
Sadly, at this point if you are not restored, it looks like a dealer visit is in order for HMI reprogramming or replacement. Sorry!