Any vacuum lines near the transmission are likely related to other systems, such as:
* Transmission Range Sensor (PRNDL): This sensor might have a vacuum line connected, but it's for the indicator lights on the instrument cluster, showing the gear position. This is not directly involved in transmission shifting.
* Other Engine Vacuum Systems: There might be vacuum lines running nearby for the brake booster, emission control systems, or other engine components. These are not connected to the transmission's operation.
Therefore, looking for vacuum lines "on" the transmission will be fruitless. If you're experiencing transmission problems, the issue is unlikely to be related to vacuum lines. Instead, consider problems with the transmission's electronic controls, fluid level, or internal components.