Front park assist screeching and nothing is there

[d1h]

Front park assist on my 2018 Silverado keeps going off and sometimes the message "Action Required. Park Assist Blocked. See Owner's Manual" comes up on the display. Possible faulty sensor maybe?

[blofgren]

My wife's 2019 Acura MDX was doing that for a while too. I was getting ready to take it to the dealer, but it stopped and hasn't done it again. :h Maybe too much technology....

[Krusty]

Try blasting those sensors with the pressure washer and see if it makes a difference

[Grit_dog]

Not discounting bad sensor though. At leas they’re cheap and easy to replace.

[Grit_dog]

My 2020 Silverado is glitchy and twitchy too even got some message like that once. But mud or ice has been generally to blame.
First truck with front proximity sensors for me though. Only other experience is with vehicles that stay cleaner.

[dodge_guy]

If it’s not covered or dirty, you have a bad sensor. A dealer will be able to tell which sensor is bad.
I’ve had the same thing happen on my Ram just recently. It froze when covered. Now it randomly goes off. So unless it dries out I may have to replace the bad d sensor, I haven’t looked at it yet.