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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 208 (Automatic Transmission - ALLISON - Diagnosis) >> Diagnostic Tests >> DTC P0742: Torque Converter Clutch System Stuck On >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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. 2  - This step tests for TCC application at start-up (stuck on).
  2. 3  - This step checks for internal damage.
  3. 4  - This step checks for three possible causes for TCC being stuck on.

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