Tire sensor replacement

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. So sorry to hear you're having trouble with your Grand Cherokee. If you're getting a message to check the tire pressure after having new tires installed, it sounds like the tire pressure monitoring system (TPMS) sensors might be the issue. These sensors are inside each tire and communicate the tire pressure to your vehicle's computer. If three of the sensors are faulty or not functioning, a warning light would be triggered. Also, if you're hearing a knocking noise from under the driver's side floorboard, it could be a broken sensor bouncing around inside the tire. It is unlikely that the check engine light is related to the TPMS concern, and further diagnostics might be required to ensure there aren't other underlying issues. 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!