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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Automatic Transmission - 4L80-E - Service & Replacement) >> Diagnostic Information and Procedures >> DTC P0503: Low Vehicle Speed And There Is A High Engine Speed In A Drive Gear Range >> Test Description

Test Description

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

  1. 3. This step tests the AT OSS assembly circuit.
  2. 4. This step tests the integrity of the AT OSS sensor.
Fig 1: DTC P0503 (Steps 1 - 9)
G01952148Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0503 (Steps 10 - 16)
G01952149Courtesy of GENERAL MOTORS CORP.
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