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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Automatic Transmission Diagnosis - 4L80-E) >> Diagnostic Tests >> DTC P0758: 2-3 Shift Solenoid Valve - Electrical Malfunction >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 GMC Sierra, 2002 Chevrolet Suburban, and 2002 Chevrolet 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. 4

    This step tests the function of the 2-3 shift solenoid valve and the internal wiring harness.

  2. 5

    This step tests the power to the 2-3 shift solenoid valve from the ignition through the fuse.

  3. 7

    This step tests the ability of the PCM and the wiring to control the ground circuit.

  4. 10

    This step measures the resistance of the internal wiring harness assembly and the 2-3 shift solenoid valve.

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