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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1788 (Automatic Transmission - 4L60-E/4L65-E (Diagnosis)) >> Diagnostic Information and Procedures >> Automatic Transmission Oil Cooler Flushing and Flow Test >> Code Recording Procedure

Code Recording Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Turning Main Function Switch To CODE Position
G02131582Courtesy of GENERAL MOTORS CORP.
  1. Turn the main function switch to the CODE position.

    Important: 

    • If power is interrupted prior to the recording of the seven-character code, the code will be lost and the flow rate test will need to be repeated.
    • The flow test must run for a minimum of 8-10 seconds and be above 0.5 gpm for a code to be generated.
  2. Record TESTED flow rate, temperature, cycle and seven-character flow code information on repair order.
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