Clunk and shifts out of gear while driving? Tranny or somethin else

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your vehicle. The issue sounds like the issue with your Grand Cherokee may be transmission-related. These symptoms could indicate worn internal transmission components, a failing torque converter, or low transmission fluid levels. Sometimes, issues with the driveshaft, U-joints, or transfer case (if it's a 4WD) can also cause clunking and make it feel like it's slipping out of gear. However, the intermittent re-engagement and RPM changes you described are more commonly linked to transmission problems. A transmission fluid check and scan for any stored trouble codes would be a good first step to get a clearer diagnosis. If this persists, it's best to get it inspected before any further damage occurs. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!