Diagnostic Aids

If the TCC is mechanically stuck on, TCC fluid will apply the TCC causing an engine stall.

Fig 1: Code 69 Schematic (4L60-E Diesel) Torque Converter Clutch Stuck On

Fig 2: Code 69 Schematic (4L80-E Gasoline) Torque Converter Clutch Stuck On

Fig 3: Code 69 Schematic (4L60-E Diesel) Torque Converter Clutch Stuck On

Fig 4: Code 69 Schematic (4L80-E Gasoline) Torque Converter Clutch Stuck On

Fig 5: Code 69 Flow Chart Torque Converter Clutch Stuck On