Fill Tube/Dipstick Provision
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
All 1000 series transmissions have a fill tube/dipstick provision on both sides of the transmission. The fill tube and dipstick are installed and adapted as specified by the vehicle manufacturer. A plug is installed in the unused location.