car will not move while the transmission is in gear, what can be causing this?

2006 CADILLAC DEVILLE DTS

150,000 MILES • V8 • 2WD • AUTOMATIC

TMOORE.0120

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I can crank it up and put in gear, but it won't go once i press the gas. then i lifted the hood and saw transmission fluid all over and smoke coming from where the transmission fluid cap was located. then when i went to turn off the car, I heard a weird suction sound before the car shut off.

Is it low fluid causing the car not to go while in gear or is it the transmission shifter cable or transmission solenoid?

Jul 31, 2023 at 8:35 PM

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This sounds like the transmission filter is plugged up, I would drop the pan and replace the filter. Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car:

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

This guide may help as well:

https://www.2carpros.com/articles/automatic-transmission-problems

Also make sure the fluid level is good, this kind of thing can happen when the fluid gets foamed up due to low fluid.

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Aug 1, 2023 at 12:59 PM