Symptoms - Automatic Transmission. Pontiac Sunfire 2001

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2001 🢒 Sunfire 🢒 Engine 🢒 Engine Controls - 2.2L (LN2) 🢒 Symptoms - Automatic Transmission

Diagnostic Category

Diagnostic Information

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 Check

•	Refer to Line Pressure Check

•	Refer to Fluid Leak Diagnosis

•	Refer to High or Low Line Pressure

•	Refer to Fluid Foaming

Noise and Vibration Diagnosis

This category contains the following topics:

•	Noise in drive gears

•	Noises (whine, growl, rattle, buzz, popping)

•

Vibration

•	Refer to Noise in All Ranges

•	Refer to Noise in First or Reverse Gear

•	Refer to Noise in Second

•	Refer to Whine Noise Varying with RPM or Fluid Pressure

•	Refer to Abnormal Noise in Park or Neutral Range

•	Refer to Buzz Noise or High Frequency Rattle Sound

•	Refer to Metallic Rattle Noise In Second or Third Gear

•	Refer to Final Drive Noise or Hum Under Light Throttle

•	Refer to Chatters/Slips in First Gear

Range Performance Diagnosis

This category contains the following topics:

•	No Reverse

•

No Drive

•	Loss of power

•	No engine braking

•	Refer to No Gear Selection

•	Refer to Shift Indicator Indicates Wrong Gear Selection

•	Refer to Slips in Reverse or No Reverse

•	Refer to No Drive in Drive or Intermediate Range

•	Refer to No Drive in Forward Ranges

•	Refer to No Drive in All Ranges

•	Refer to No Drive in Drive Range

•	Refer to No Overrun Braking in Low

Shift Quality (Feel) Diagnosis

This category contains the following topic:

•	Harsh shifts

•	Soft (slipping) shifts

•	Delayed engagement

•	Refer to Slipping or Harsh 1-2 Shift

•	Refer to 2-3 Shift Rough or Delay

•	Refer to 2-3 Shift Soft, Slips, or Early

•	Refer to Delay in Drive and Reverse

Shift Pattern

This category contains the following topics:

•	No upshift

•	No downshift

•	Missed or shift slipping

•	Non-first gear starts

•	Refer to No or Delayed Upshift or Full Throttle Upshift

•	Refer to No 2-3 Shift or 2-3 Shift Delay

•	Refer to No Intermediate Range

•	Refer to Binds in Third Gear

•	Refer to Chatters/Slips in First Gear

•	Refer to Shifts 3-1 at High Speeds for Passing Gear

•	Refer to No Full Throttle Downshift

•	Refer to Shifts 1-3, Misses Second Gear

•	Refer to Second Speed Start

Shift Speed Diagnosis

This category contains the following topic:

Inaccurate or inconsistent shift points

Refer to No 2-3 Shift or 2-3 Shift Delay

Torque Converter Diagnosis

This category contains the following topics:

•	Torque converter diagnosis

•	TCC remains engaged (engine stalling)

•	Refer to Torque Converter Diagnosis

•	Refer to Engine Stalls During Reverse or Drive Engagement

If No Symptom Found

•	Refer to Transmission Fluid Check

•	Refer to Road Test

•	Refer to Line Pressure Check