- Symptoms - Automatic Transmission

The following table consists of seven diagnostic categories that are located in the left-hand column. Using this column, choose the appropriate category based on the operating conditions of the vehicle or transmission. After selecting a category, use the right-hand column to locate the specific symptom diagnostic information.

Part 1 Of 2:

Part 2 Of 2:

Symptom Diagnosis





Harsh Shift





Low Line Pressure





Second Gear Starts





Transmission Slips in Reverse





Soft Shifts





No First Gear D2, D3, D4





No Second Gear D2, D3





No Third Gear-D3





No Fourth Gear





No First Gear





Inconsistent Shifts





Third and Fourth Gears Only





No Engine Braking





No Overrun Braking in D3





No Overrun Braking in D2





No Engine Braking in D1





Forward Motion in N





Engine Stall





Loss of Power





Loss of Drive





Engine Starts in Gear





No Gear Selection





Shift Lever Indicates Wrong Gear





No TCC Apply





Soft TCC Apply





Early TCC Encasement





TCC Not Disengaging





Converter Ballooning





No Torque Multiplication





No Reverse





Does Not Stay in Park





Extended or Delayed Upshifts





Noise





Noises in All Ranges





Whine Noise Varying with RPM or Fluid Pressure





Popping Noise





Buzz Noise or High Frequency Rattle Sound





Whine/Growl Noise That Changes with Vehicle Speed





Final Drive Noise or Hum Noise





Noise in First, Second, Third, or Fourth





Vibration Diagnosis





Leak at Bottom Pan





Leak at Fluid Fill Indicator





Leak at Vehicle Speed Sensor





Leak at Electrical Connector





Leak at Cooler Connectors





Leak at Case Extension





Leak at Manual Shift





Leak at Converter Seal





Leak at Drive Axle Seal





Fluid Foaming