Section 65 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting)
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
- Symptoms - Automatic Transmission
- Range Selector Displays Incorrect Range
- Tow/Haul Switch/Indicator Always On or Inoperative
- Transmission Fluid Checking
- Line Pressure Check
- Road Test
- Torque Converter Diagnosis
- Flexplate/Torque Converter Vibration Test
- 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 (J 35944-A)
- Bushing and Mating Shaft Inspection
- Transmission Overheats
- Oil Pressure High or Low
- Harsh Shifts
- Inaccurate Shift Points
- First Gear Range Only - No Upshift
- Slips in First Gear
- Slipping or Harsh 1-2 Shift
- No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting
- Second/Third Gear Only or First/Fourth Gears Only
- No First or Second Gear/No Third or Fourth Gear
- No Second Gear, No Fourth Gear, and No Reverse Gear
- Third Gear Only
- 3-2 Flare or Tie-Up
- No 3-4 Shift, Slips or Rough 3-4 Shift
- No Reverse or Slips in Reverse
- No Part Throttle or Delayed Downshifts
- Harsh Garage Shift
- No Overrun Braking - Manual 3-2-1
- No Torque Converter Clutch Apply (300 RPM Slip)
- Torque Converter Clutch Shudder
- No Torque Converter Clutch Release
- Torque Converter Clutch Slip - 100 RPM Slip
- Torque Converter Clutch Slip with Stall/Stumble
- Torque Converter Clutch Intermittent - OK Cold/Slips Hot
- No Fourth Gear, or Slips in Fourth Gear
- Slip/Flare in Any Gear
- No Third Gear
- Drives in Neutral
- Second Gear Start
- No Park
- Oil Out the Vent
- Vibration in Reverse and Whining Noise in Park
- Ratcheting Noise
- Ticking Noise in Reverse
- Popping Noise
- Whine Noise Varying with RPM or Fluid Pressure
- Buzz Noise or High Frequency Rattle Sound
- Noise in Random Ranges
- No Drive in All Ranges
- No Drive in Drive Range
- Shift Lever Indicates Wrong Gear
- No Gear Selection
- Engine Starts in Gear
- Delay in Drive and Reverse
- Lack of Power or Hesitation