GM Service Manual Online
For 1990-2009 cars only

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to:

   •  Power Seats Circuit Description
   •  Power Lumbar Circuit Description
   •  Heated Seats Description
   •  Heated Seats Circuit Description
   •  Memory Seat Circuit Description

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the power seat. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • 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 in Wiring Systems.

Symptom List

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

    •  Heated Seat Inoperative
    •  Heated Seat Always On
    •  Heated Seat Switch Low Indicator Inoperative
    •  Heated Seat Switch High Indicator Inoperative
    •  Power Seat Inoperative
    •  Power Seat Does Not Move Forward/Rearward
    •  Power Seat Does Not Tilt Forward
    •  Power Seat Does Not Tilt Rearward
    •  Power Seat Does Not Recline
    •  Memory Seat Feature Inoperative
    •  Power Seats - Memory Switch Inoperative
    •  Lumbar Support Does Not Move In or Out