LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Automatic Transmission Diagnosis - ALLISON) >> Diagnostic Tests >> DTC P0731: Incorrect 1ST Gear Ratio (2001) >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis 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. 3

    This step tests ignition voltage.

  2. 4

    This step tests speed sensor function.

  3. 5

    This step tests pressure switch status.

  4. 6

    This step tests for current gear ratio in 1st gear.

  5. 7

    This step checks line pressure.

scientia non olet · About LEMON Manuals