Yukon XL 4WD V8-5.3L (2011)
Seat Heater: Testing and Inspection
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 See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle before using the Symptom Tables in order to verify that all of the following are true:
*
There are no DTCs set.
*
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 the following system descriptions:
*
Heated Seats Description and Operation
*
Heated/Cooled Seats Description and Operation See: Description and Operation/Heated/Cooled Seats
Visual/Physical Inspection
*
Inspect for aftermarket devices which could affect the operation of the system. Refer to Checking Aftermarket Accessories See: Testing and
Inspection/Component Tests and General Diagnostics/Checking Aftermarket Accessories.
*
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/Circuit Testing/Testing for Intermittent Conditions and Poor Connections.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
*
Heated Seat Inoperative
*
Heated Seat Inoperative - Rear See: Heated Seat Inoperative - Rear
*
Heated/Cooled Seats Inoperative
