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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Automatic Transaxle Diagnosis - 4T65-E) >> Diagnostic Tests >> DTC P1887: Torque Converter Clutch Release Switch Circuit Malfunction >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Buick Regal, 2002 Buick Century, 2001 Buick Regal, and 2001 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The numbers listed below refer to step numbers in the diagnostic procedure:

  1. 3

    This step tests the PCM's ability to recognize a grounded circuit.

  2. 4

    A short to ground in this circuit would set DTC P0742.

  3. 5

    A short to ground in this circuit would set DTC P0742.

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