Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 62 (AUTOMATIC TRANSAXLE - SERVICE, DIAGNOSIS & TROUBLESHOOTING)
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 62 (Automatic Transaxle - Service, Diagnosis & Troubleshooting)
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 62 (Automatic Transaxle - Service, Diagnosis & Troubleshooting)
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.
- Troubleshooting
- Symptoms - Automatic Transmission
- Transmission Fluid Checking Procedure
- Line Pressure Check Procedure
- Road Test Procedure
- Torque Converter Diagnosis Procedure
- Noise and Vibration Analysis
- Clutch Plate Diagnosis
- Engine Coolant/Water in Transmission
- Fluid Leak Diagnosis
- Case Porosity Repair
- Shift Solenoid Leak Test
- Automatic Transmission Oil Cooler Flushing and Flow Test (J 45096)
- Automatic Transmission Oil Cooler Flushing and Flow Test (SA9165T)
- Automatic Transmission Fluid Leaks
- High or Low Line Pressure
- Inaccurate/Inconsistent Shift Points
- Harsh Shifts
- No Reverse or Slips in Reverse
- No First Gear, Slips in First Gear
- No Second Gear, Slips in Second Gear
- No Third Gear, Slips in Third Gear
- Second Gear Only
- No Fourth Gear, or Slips in Fourth Gear
- Loss of Drive
- Loss of Power
- Engine Stall
- First and Second Gears Only
- Third and Fourth Gears Only
- First and Fourth Gears Only
- Second and Third Gears Only
- No Park
- Ratcheting Noise
- No Engine Braking; All Manual Ranges
- No Engine Braking; Manual Second - Second Gear
- No Engine Braking; Manual First - First Gear
- Drives in Neutral
- No Gear Selection
- Shift Indicator Indicates Wrong Gear Selection
- Fluid Foaming
- Vibration
- Whine Noise Varying with RPM
- High Pitch Whine Noise
- 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 Random Ranges
- Noise in First, Second, Third, or Fourth
- No Torque Converter Clutch (TCC) Release
- Torque Converter Clutch (TCC) Apply with Cold Engine
- Torque Converter Clutch (TCC) Shudder
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.