Anybody know what would cause the DIC to show "Park Assist Off"? It will usually occur after 15 minutes steady throttle driving time and results in about a 300-500 rpm drop for the same throttle position. No codes are set when this happens but it's driving me nuts.

 

The park assist is the back up sensors right? I had a 2077 Avalanche do the same thing to me and it ended up being a bad sensor in the back. Go check all the connections and make sure they are tight and looking good.

 

What could this system be tied to that would cause the rpm drop? I understand how a bad throttle body/tsp caused the Traction Control and Stabilitrac to light up the DIC, but this just doesn't make sense.

 

I would try and get a shop to read the codes when it's doing it if you can, maybe they can help narrow it down. Not sure what would cause the drop in RPM's, that's kind of odd

 

The problem is it doesn't set any codes. It makes sense to me that a TPS problem would light up Traction control/Stabilitrak, but I can't figure out what system would light the Park Assist Lights. Based on timing I almost think it relates to transmission temperature or the converter.