External signs:
* Gear slippage when shifting
* Delay when shifting gears
* Jerks or bumps when shifting gears
* Inability to turn on certain gears
* Leaks or strange smells from the transmission
* Increased noise while driving
Internal signs:
* Wear or damage to friction discs and bands
* Problems with solenoids and valve body
* Torque converter malfunction
* Damage to bearings, gears and shafts
* Transmission fluid contamination
Other signs:
*Transmission fault indicator (if equipped)
* Deterioration in fuel economy
* Vibration or shaking while driving
* Difficulty starting the engine
* The car moves jerkily when you press the gas pedal