Engine Light On--Dashboard light prompts you to "Check Engine" or "Service Engine Soon"
Strange Noises--Makes clicking, knocking, screeching, buzzing, whistling, clanking, or grating noises. Unusual sounds can come from hood or rear of car and may include a hum or low whine.
"Morning Sickness"--When the vehicle is cold, it won't move, or it shifts late during the first few minutes of operation.
Slipping--Engine races, but vehicle moves slowly or won't accelerate as it should.
Stalling--Vehicle stalls or labors on take off.
Doesn't Go--You place the shift lever in Drive and nothing happens. Even racing the engine does nothing.
No Reverse--Vehicle doesn't move when shift lever is placed in Reverse.
Leaks--Fresh fluid stains under the vehicle.
Loss of Power--Passing gear won't engage, and there's no surge of power when you press the pedal to the floor.
Erratic or Improper Shifting--Noticeable early or late shifting. Unexpected shifts, or speed at which shifts occur keeps changing.
Shift Handle Stuck/Sticks--Shift handle is hard to move into or out of any position.
Vehicle Moves (or Jerks) in Park or Neutral
Strange Smell--Burnt or rancid odor is coming from under the hood or underneath vehicle.
Engine Braking/Downshift Doesn't Work--Using the transmission to slow the car on long downhill slopes or in snow/icy conditions does not work in one or more shifter positions.
Shift Indicator Off--The indicator must be slightly off (P) or (N) to start the car. Shift indicator doesn't point to the proper range.
Metal Shavings or Debris--Inspection or transmission service reveals excessive amounts of debris in the transmission pan.