Jeep trans problem

Not an A-body but I know we have an amazingly diversified group of smart folks here. My wife has a 2002 Jeep TJ, or perhaps Wrangler in the US. The trans idiot light came on today so I checked the fluid for starters, it wasn't low but it was bubbly/fizzy on the dip stick? I can't say I've ever seen that before, doesn't look healthy that's for sure. Before I rush off to a trans shop to get a flush, inspection, get bent over, etc. I thought it best to consult my Mopar experts so I don't come in totally clueless. Any thoughts?