My car has 133,000 miles and has never replaced the transmisson fluid.

Hello, according to the maintenance guide for your vehicle, for "normal" use, you should replace the transmission fluid at 100,000 miles. As a result, I would do it sooner than later. I would recommend to drain and refill the fluid - do not use "flush" equipment at this mileage, as you may cause more issues with debris being spread due to the lack of previous fluid changes. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops