* Automatic Transmission: Most 2000 Jeep Grand Cherokees with automatic transmissions used ATF+4. However, some might have used a different fluid depending on the specific transmission (e.g., 42RE, 44RE, 45RFE). Check your owner's manual. This is the most critical step. The owner's manual will definitively state the correct fluid type for your vehicle.
* Manual Transmission: If you have a manual transmission, you'll need GL-4 or GL-5 gear oil. Again, consult your owner's manual for the specific weight and type recommended by Jeep.
Do not guess. Using the wrong transmission fluid can severely damage your transmission and lead to costly repairs. Always refer to your owner's manual for the correct specifications. If you can't find your owner's manual, you can usually find a digital version online through the Jeep website or a reputable automotive parts website by entering your vehicle's VIN.
