Symptoms - Automatic Transmission

Diagnostic Category	Diagnostic Information
DEFINITION: The following table consists of eight diagnostic categories that are located in the left 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 column to locate the specific symptom diagnostic information.
Fluid Diagnosis: This category contains the following topics: Fluid condition, appearance, contaminants, smell, overheating Line pressure, high or low Fluid leaks	Refer to Transmission Fluid Checking Procedure . Refer to Fluid Foaming . Refer to High or Low Line Pressure . Refer to Fluid Leak Diagnosis . Refer to Automatic Transmission Fluid Leaks .
Noise and Vibration Diagnosis: This category contains the following topics: Ratcheting noise Noise, drive gear, final drive, whine, growl, rattle, buzz, popping Vibration	Refer to Ratcheting Noise . Refer to Whine Noise Varying with RPM . Refer to High Pitch Whine Noise . Refer to Popping Noise . Refer to Buzz Noise or High Frequency Rattle Sound . Refer to Whine/Growl Noise That Changes with Vehicle Speed . Refer to Final Drive Noise or Hum Noise . Refer to Noise in Random Ranges . Refer to Noise in First, Second, Third, or Fourth . Refer to Flexplate/Torque Converter Vibration Test . Refer to Noise and Vibration Analysis . Refer to Vibration .
Transmission Will Not Upshift or Downshift: This category contains the following topic: Using TAP Shift	Refer to TAP Shift Circuit Performance .
Range Performance Diagnosis: This category contains the following topics: Drives in Neutral No Park No Reverse No Drive Loss of power No engine braking Shift indicator indicating wrong gear No gear selection	Refer to Drives in Neutral . Refer to No Park . Refer to No Reverse or Slips in Reverse . Refer to Loss of Drive . Refer to Loss of Power . Refer to Engine Stall . Refer to No Engine Braking; All Manual Ranges . Refer to No Engine Braking; Manual First - First Gear . Refer to No Engine Braking; Manual Second - Second Gear . Refer to Shift Indicator Indicates Wrong Gear Selection . Refer to No Gear Selection . Refer to Range Selector Displays Incorrect Range .
Shift Quality, Feel, Diagnosis: This category contains the following topic: Harsh shifts	Refer to Harsh Shifts .
Shift Pattern: This category contains the following topics: One forward gear only Specific forward gears only Slipping	Refer to Second Gear Only . Refer to First and Second Gears Only . Refer to First and Fourth Gears Only . Refer to Second and Third Gears Only . Refer to Third and Fourth Gears Only . Refer to No First Gear, Slips in First Gear . Refer to No Second Gear, Slips in Second Gear . Refer to No Third Gear, Slips in Third Gear . Refer to No Fourth Gear, or Slips in Fourth Gear .
Shift Speed Diagnosis: This category contains the following topic: Inaccurate or inconsistent shift points	Refer to Inaccurate/Inconsistent Shift Points .
Torque Converter Diagnosis: This category contains the following topics: Torque Converter Diagnosis TCC remains engaged TCC application while engine is cold TCC shudder Engine stalling	Refer to Torque Converter Diagnosis Procedure . Refer to No Torque Converter Clutch (TCC) Release . Refer to Torque Converter Clutch (TCC) Apply with Cold Engine . Refer to Torque Converter Clutch (TCC) Shudder . Refer to Engine Stall .
If no symptoms are found	Refer to Transmission Fluid Checking Procedure . Refer to Road Test Procedure . Refer to Line Pressure Check Procedure .