* Automatic Transmission: The dipstick and fill location are usually on the passenger side of the transmission, near the top. It's a fairly prominent dipstick, often with a bright colored handle. Look for a tube sticking out of the transmission with a dipstick attached.
* Manual Transmission: Manual transmissions generally don't have a dipstick. The transmission fluid is typically checked and added through a fill plug, usually located on the side of the transmission case. You'll likely need a service manual or a repair guide specific to your truck's transmission type to locate the fill plug.
Important Note: Before adding any fluid, consult your owner's manual or a repair manual specific to your truck's year and transmission type. It will provide the correct type and amount of transmission fluid to use. Incorrect fluid can damage your transmission. Also, improperly adding fluid can lead to overfilling, which can cause problems as well.
