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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P0719: Open TCC Brake Switch Circuit During Accelerations >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. 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 brake switch voltage to the PCM connector.
  2. 7. This step isolates the TCC brake switch as a source for setting the DTC.
  3. 10. This step tests for a short to ground in the voltage circuit (CKT 739) to the TCC brake switch.
  4. 12. This step tests for a short to ground in the TCC brake switch circuit (CKT 420), from the TCC brake switch to the PCM.
  5. 13. This step isolates the PCM as a source for causing the fuse to open.
Fig 1: DTC P0719 (1 Of 3)
G02424353Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0719 (2 Of 3)
G02424354Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0719 (3 Of 3)
G02424355Courtesy of GENERAL MOTORS CORP.
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