General behavior:
* Slipping or delay when shifting gears
* Jerks or jolts when changing gears
* Difficulty shifting or inability to shift into certain gears
*Transmission overheating (unusual odor or hot transmission fluid)
Gear shifting problems:
* Delay when upshifting
* Slipping in upshifts
* Inability to engage gear (neutral, park)
* Shifting into gear is difficult (grinding, clicking)
Problems with downshifting:
* Jerks or jolts when downshifting
* Slipping or delay when downshifting
* Inability to downshift (neutral, park)
Strange noises:
*Buzzing, squealing, or grinding noises when the transmission operates
* Hum or howl when the car is moving
Blocking problems:
* Slipping or vibration when torque converter lock-up is engaged
* Inability to enable or disable torque converter lockup
Hydraulic problems:
*Transmission fluid leaks
*Low transmission fluid level
* Contaminated or old transmission fluid
Electrical problems:
* Flashing or illuminated gearbox indicator
*Transmission related fault codes
* Faulty harness or sensors