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GM OBD Trouble Code 37

By Jim Taddei, May 1, 2009

Torque Converter Clutch Brake Switch Circuit Error

The ECM monitors the Torque Converter Clutch Brake switch to determine if the brakes are applied or not. It uses this signal to help determine if the the Torque Converter Clutch should be applied.

Fault Code Description

  • 37 - Torque Converter Clutch Brake switch circuit error

Symptoms

  • Torque Converter Clutch Brake switch will not come on or operates erratically

Common Problems

  • Faulty or out of adjustment Torque Converter Clutch brake switch

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