Symptoms - Automatic Transmission

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic Category	Diagnostic Information
DEFINITION: This table consists of eight 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.
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 Incorrect Line Pressure . Refer to Automatic Transmission Fluid Leaks . Refer to Fluid Leak Diagnosis .
Noise and Vibration Diagnosis: This category contains the following topics: Noise - drive gear, final drive, whine, growl, hum, rattle, buzz, popping Torque converter diagnosis Noise and vibration analysis	Refer to Whine Noise Varying with RPM or Fluid Pressure . 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 First, Second, Third, or Fourth . Refer to Noise in Random Ranges . Refer to Abnormal Noise in Park or Neutral Range . Refer to Torque Converter Diagnosis Procedure . Refer to Noise and Vibration Analysis .
Range Performance Diagnosis: This category contains the following topics: No Park No Reverse or slips No Drive or slips No engine braking Range selector displays incorrect range	Refer to No Park Range . Refer to Slips in Reverse or No Reverse . Refer to Slips in Drive or No Drive . Refer to Locked Up in Drive/Reverse . Refer to No Engine Braking in Manual Second or Low Range . Refer to Range Selector Displays Incorrect Range (3.4L) or Range Selector Displays Incorrect Range (3.6L) .
Shift Quality (Feel) Diagnosis: This category contains the following topics: Harsh shifts Soft shifts Harsh engagement, garage shifts Delayed engagement, garage shifts	Refer to Harsh or Soft 1-2 Shift Feel . Refer to Harsh or Soft 2-3/3-2 Shift Feel . Refer to Harsh or Soft 3-4/4-3 Shift Feel . Refer to Harsh Park to Reverse/Drive Engagement . Refer to Delayed Park to Reverse/Drive Engagement .
Slipping or Missing Gears: This category contains the following topics: No upshift Slipping or missing gears One forward gear only Two forward gears only Non-First gear start	Refer to Slipping or No First Gear . Refer to Slipping or No Second Gear . Refer to Slipping or No Third Gear . Refer to Slipping or No Fourth Gear . Refer to First Gear Only . Refer to Second Gear Only . Refer to Third Gear Only . Refer to Fourth Gear Only . Refer to First and Second Gear Only (2-3 Solenoid Stuck On) . Refer to First and Fourth Gear Only (1-2 Solenoid Stuck On) . Refer to Second and Third Gear Only (1-2 Solenoid Stuck Off) . Refer to Third and Fourth Gear Only (2-3 Solenoid Stuck Off) .
Shift Speed Diagnosis: This category contains the following topic: Incorrect shift points	Refer to High or Low Upshift or Downshift Speed .
Torque Converter Diagnosis: This category contains the following topics: Torque converter diagnosis TCC does not apply TCC does not release TCC shudder	Refer to Torque Converter Diagnosis Procedure . Refer to No Torque Converter Clutch (TCC) Apply . Refer to Converter Clutch Stuck On in All Gears . Refer to Converter Clutch Stuck On in Second, Third and Fourth Gear . Refer to Harsh Torque Converter Clutch (TCC) Apply or Release . Refer to Converter Clutch Apply Rough, Slips, or Shudders .
Symptom Can Not Be Duplicated or Symptom Not Found: This category contains the following topics: Transmission fluid diagnosis Road testing Line pressure diagnosis	Refer to Transmission Fluid Checking Procedure . Refer to Road Test Procedure . Refer to Line Pressure Check Procedure .