Section 155 (Automatic Transmission - 6L50/6L80/6L90 - Service, Diagnosis & Troubleshooting)
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Symptoms - Automatic Transmission
- Control Solenoid Valve and Transmission Control Module Assembly Inspection
- Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test
- Control Solenoid Valve and Transmission Control Module Assembly Cleaning
- Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test
- Service Fast Learn Adapts
- Tow/Haul Switch/Indicator Always On or Inoperative
- Transmission Fluid Checking
- Line Pressure Check
- Road Test
- Torque Converter Diagnosis
- Flexplate/Torque Converter Vibration Test
- Vibration
- Noise and Vibration Analysis
- Whine/Growl Noise That Changes with Vehicle Speed
- Noise in First or Reverse Gear
- Noise in First, Second, Third, Fourth, Fifth, or Reverse Gear
- Noise in First, Second, Sixth, or Reverse Gear
- Noise in Second or Sixth Gear
- Noise During 3-4 or 4-3 Shifts
- Noise in Fourth, Fifth, or Sixth Gear
- Clutch Plate Diagnosis
- Engine Coolant/Water in Transmission
- Fluid Leak Diagnosis
- Case Porosity Repair
- Automatic Transmission Oil Cooler Flushing and Flow Test (J 45096)
- Automatic Transmission Fluid Leaks
- No Park or Drive
- Harsh Garage Shift
- No Drive in All Ranges
- No Drive or Reverse Gear
- No First Gear
- No First and Reverse Gears
- Harsh, Soft, Delayed or Slipping First or Reverse Gear
- Stuck in First or Reverse Gear
- No First, Second, Third, and Fourth Gear
- Harsh, Soft, Delayed or Slipping 1-2-3-4 Shift
- No First, Second, Third, Fourth, Fifth, or Reverse Gear
- No First, Second, Sixth, or Reverse Gear
- No Second and Sixth Gear
- Harsh, Soft, Delayed or Slipping Second or Sixth Gear
- Stuck in Second or Sixth Gear
- Vibration in Second, Third, Fourth, Fifth or Sixth Gear
- No Third, Fifth, and Reverse Gear
- Harsh, Soft, Delayed or Slipping Third, Fifth, or Reverse Gear
- No Fourth, Fifth, and Sixth Gear
- Harsh, Soft, Delayed or Slipping 4-5-6 Shift
- No Torque Converter Clutch Apply
- No Torque Converter Clutch Release
- No Reverse Gear
- Fluid Pressure High or Low