gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 18348 > < Initial Inspection and Diagnostic Overview
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Seat Heater: Symptom Related Diagnostic Procedures

Symptoms - Seat Heating and Cooling

SYMPTOMS - SEAT HEATING AND COOLING

IMPORTANT:  The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the following are true:

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There are no DTCs set.

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The control modules can communicate via the serial data link.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to Heated Seats Description and Operation.

Visual/Physical Inspection
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Inspect for aftermarket devices which could affect the operation of the system.

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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. Refer to Testing for Intermittent Conditions and Poor Connections.
 See: Testing and Inspection/Component Tests and General Diagnostics

Symptom List
Refer to Heated Seat Inoperative.

Heated Seat Inoperative

HEATED SEAT INOPERATIVE

Initial Inspection and Diagnostic Overview|Page 18348 > < Initial Inspection and Diagnostic Overview