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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L >> Diagnostic Information and Procedures >> Glow Plug System Diagnosis >> Test Description

Test Description

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

  1. 1. This step will make sure the Diagnostic System Check - Engine Controls is performed.
  2. 2. This step will make sure there are no other DTCs stored that will affect the operation of the glow plug system.
  3. 3. This step will check each glow plug for an open.
  4. 4. This step will check each glow plug feed circuit for an open.
Fig 1: Glow Plug System Diagnosis
G01599432Courtesy of GENERAL MOTORS CORP.
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