The torque converter has leaked down. There should be a small plug that can be removed and you can fill it. First let the transmission run a little bit to fill the converter, then check the level and fill as necessary (the pump is filling the converter). Or you can pull the tranny back and fill the converter that way.
A Turbo 350 transmission typically takes approximately 6-8 quarts of transmission fluid for a complete fluid change. It's important to consult the vehicle's owner's manual or a trusted mechanic for the exact quantity required for your specific vehicle model.
i dont know either i got 350 turbo no forward but have reverce if anyone finds out let me know ....rebuild is about 800.
A 350 Turbo transmission typically requires about 11 quarts of fluid for a complete fill, including the torque converter. However, when performing a fluid change or filter replacement, you may only need around 5 to 7 quarts. It's always advisable to check the owner's manual or service guide for the specific vehicle to ensure accurate fluid specifications.
The typical turbo 350 has three speeds forward and one reverse.
Automatic Transmission fluid
tranny fluid possibly or hydraulic
usually next to the blinker fluid reservoir unless its turbo then its under the flux compasitor relay unit thingy
Under the air conditioning pump, to the right (looking forward from the rear) & slightly below your turbo housing.
in your tranny fluid check tube you will need a funnel
in the transmission fluid reservoir under the hood
2 qts
GM synchromesh