Why is my chevy trax touch screen not working?

While there are a number of reasons why Your Chevrolet Trax touch screen could fail, they're largely determined by HOW it's failing. Are You getting nothing but a black screen Nothing but a blue screen Is the screen working, but it's just not accepting Your touch inputs While all three indicate a failure, they are often caused by different factors. First, a black screen would indicate a power failure. This is usually caused by a wiring issue, or failure of the head unit itself. A blue screen would indicate a software failure -- Your remediation there is to visit a dealer and have Your software reflashed. An unresponsive screen usually indicates damage to the digitizer -- unfortunately, there's really no cost effective solution for this one. You can try to replace the digitizer, but it's usually cheaper and easier to replace the entire unit.