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Engine Controls - System/component Tests: Specifications GMC Pickup K2500

Testing & Diagnostics 5 illustrations

Torque Converter Clutch (TCC) Solenoid

See MISCELLANEOUS ECM CONTROLS.

Disconnect harness connector to TCC solenoid. Measure resistance between TCC solenoid terminals "A" and "D". (Scheme 18)- (Scheme 21). Solenoid resistance should be greater than 20 ohms.

Scheme 18

Scheme 18: Torque Converter Clutch (TCC) Solenoid
Scheme 18: Torque Converter Clutch (TCC) Solenoid

Scheme 19

Scheme 19
Scheme 19

Scheme 20

Scheme 20
Scheme 20

Scheme 21

Scheme 21
Scheme 21

Scheme 22

Scheme 22
Scheme 22

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

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