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Home >> Chevrolet >> 2009 >> HHR SS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 4T45-E - DTC P0218 To DTC P2764) >> DTC P150C >> Circuit/System Description

Circuit/System Description

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The transmission control module (TCM) and the engine control module (ECM) monitor the number of Engine Speed Request Circuit serial data messages transmitted/received between modules. If the ECM detects a faulty message count, DTC P150C sets.

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