Symptoms - Automatic Transmission. Pontiac G5 2008

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2008 🢒 G5 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T45-E 🢒 Symptoms - Automatic Transmission

Diagnostic Category

Diagnostic Information

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.

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 Check .

•	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 .

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 .

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 .

•	Refer to No Torque Converter Clutch Release .

•	Refer to Torque Converter Clutch Apply with Cold Engine .

•	Refer to Torque Converter Clutch Shudder .

•	Refer to Engine Stall .

If no symptoms are found:

•	Refer to Transmission Fluid Check .

•	Refer to Road Test .

•	Refer to Line Pressure Check .