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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 4L60-E/4L65-E (Service & Replacement) >> Diagnostic Information and Procedures >> DTC P0740: Open, Short To Ground Or Short To Power In TCC Solenoid Valve Circuit >> Test Description

Test Description

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

  1. 4. This step tests for voltage to the solenoid.
  2. 5. This step tests the ability of the PCM and wiring to control the ground circuit.
  3. 7. This step tests the resistance of the TCC solenoid valve and the automatic transmission (AT) wiring harness assembly.
Fig 1: DTC P0740 Diagnosis (Steps 1-6)
G01565707Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0740 Diagnosis (Steps 7-14)
G01565708Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0740 Diagnosis (Steps 15-18)
G01565709Courtesy of GENERAL MOTORS CORP.
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