1. Low Transmission Fluid: Check the transmission fluid level. If the fluid is low, add the recommended transmission fluid to the proper level as indicated on the transmission fluid dipstick. Low transmission fluid can cause the transmission to slip and not engage properly, resulting in the vehicle not moving.
2. Faulty Transmission Solenoid: The transmission solenoid is responsible for controlling the flow of transmission fluid to engage the gears. A faulty solenoid may not activate properly when the engine is cold, preventing the transmission from engaging.
3. Faulty Transmission Control Module (TCM): The TCM is the electronic component responsible for controlling the transmission's operation. If the TCM malfunctions or experiences internal issues, it may not send the correct signals to the transmission to engage the gears.
4. Clogged Transmission Filter: If the transmission filter is clogged, it can restrict the flow of transmission fluid and cause the transmission to malfunction, resulting in the vehicle not moving.
5. Faulty Torque Converter: The torque converter is responsible for transmitting power from the engine to the transmission. If the torque converter fails or malfunctions, it may not engage properly when the engine is cold, preventing the vehicle from moving.
6. Driveline Issues: Inspect the driveline components such as the driveshaft, universal joints, and differential for any damage or issues.
7. Faulty Engine Components: In rare cases, certain engine issues such as a faulty fuel injector, ignition problem, or a failed engine sensor can also affect transmission operation, causing the vehicle not to move.
If you have determined that the transmission fluid is at the proper level and there are no visible issues with the driveline components, it is recommended to have the vehicle inspected by a qualified mechanic to diagnose the exact cause of the issue and perform any necessary repairs or replacements.
