Diagnostic Aids

Check all connections, especially those at the transmission pass-thru connector. If code is intermittent, see INTERMITTENTS in the TESTS W/O CODES article in this section. Some slight TCC slippage is normal.

Fig 1: Code 67 Schematic (4L60-E) TCC Solenoid Circuit Check

Fig 2: Code 67 Flow Chart TCC Solenoid Circuit Check