Transmission

What is your question?

Light comes in telling me to idle engine because transmission is hot. Mechanic at tranny shop says nothing wrong with it. Sometimes it does it and other times can drive even further and it doesn’t come on. No other symptoms. Seems to shift fine.

What makes this problem better or worse?

Let engine idle for a few minutes and warning light goes out

How long has your 2009 Buick Enclave had this problem?

Happened a month ago and again yesterday