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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Automatic Transmission Diagnosis - 4L80-E (Gasoline)) >> Diagnostic Tests >> DTC P0751: 1-2 Shift Solenoid Valve - Performance >> Test Description

Test Description

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The numbers listed below refer to step numbers in the diagnostic procedure:

  1. 2

    This step tests the function of the TFP manual valve position switch.

  2. 3

    This step tests whether the scan tool commanded all the shifts, or whether all the shift solenoids responded correctly, but all of the correct shifts did not occur.

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