Torque Converter Clutch (TCC) Solenoid

Disconnect harness connector to TCC solenoid. Measure resistance between TCC solenoid terminals. See Fig 1 - Fig 3 . Solenoid resistance should be greater than 20 ohms.

Fig 1: Torque Converter Clutch Schematic ("G" Series)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Torque Converter Clutch Schematic ("L" & "M" Series)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Torque Converter Clutch Schematic ("S" & "T" Series)

Courtesy of GENERAL MOTORS CORP.

NOTE: Some solenoids have an internal pressure switch in series with solenoid winding and will not show continuity until transmission hydraulic pressure is applied.