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Engine Controls - System/component Tests - 7.4L: Specifications Chevrolet Suburban C1500

Testing & Diagnostics 1 illustration

Torque Converter Clutch (TCC) Solenoid

See MISCELLANEOUS ECM/PCM/VCM CONTROLS .

Disconnect harness connector to TCC solenoid. Measure resistance between TCC solenoid terminals. (Scheme 241) Solenoid resistance should be greater than 20 ohms.

Scheme 241

Scheme 241: Torque Converter Clutch (TCC) Solenoid

Scheme 241: Torque Converter Clutch (TCC) Solenoid

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

See also:
• ADJUSTMENTS - 6.5L DIESEL