gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 9926 > < Initial Inspection and Diagnostic Overview
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Heated Glass Element: Symptom Related Diagnostic Procedures

A Symptoms

SYMPTOMS - HEATED GLASS ELEMENT

IMPORTANT:  Review the system operation in order to familiarize yourself with the system functions. Refer to Rear Window Defogger Description
and Operation.

Visual/Physical Inspection
-

Inspect for aftermarket devices which could affect the operation of the Rear Window Defogger System.

-

Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
-

Defogger Inoperative - Rear Window

-

Defogger Indicator Always On

-

Defogger Grid Lines Diagnosis

Initial Inspection and Diagnostic Overview|Page 9926 > < Initial Inspection and Diagnostic Overview