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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P0502: Low Vehicle Speed And There Is A High Engine Speed In A Drive Gear Range >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3. This step tests the AT VSS circuit.
  2. 4. This step tests the integrity of the AT VSS sensor.
Fig 1: DTC P0502 (1 Of 2)
G02424327Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0502 (2 Of 2)
G02424328Courtesy of GENERAL MOTORS CORP.
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