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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 834 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P0719: Open TCC/Stop Lamp Switch Circuit During Accelerations >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Yukon XL, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 4. This step tests for TCC/Stop lamp switch voltage to the PCM connector.
  2. 7. This step isolates the TCC/Stop lamp switch as a source for setting the
  3. 10. This step tests for a short to ground in the ignition 3 voltage circuit (CKT 441), ignition voltage, to the TCC/Stop lamp switch.
  4. 12. This step tests for a short to ground in the TCC brake switch (CKT 420), from the TCC/Stop lamp switch to the PCM.
  5. 13. This step isolates the PCM as a source for causing the fuse to open.
    Fig 1: Diagnostic Trouble Code (DTC P0719) Table (Step 1-4)
    G02112012Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic Trouble Code (DTC P0719) Table (Step 5-12)
    G02112013Courtesy of GENERAL MOTORS CORP.
    Fig 3: Diagnostic Trouble Code (DTC P0719) Table (Step 13-17)
    G02112014Courtesy of GENERAL MOTORS CORP.
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