GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Sonoma Pickup - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Heated Seats System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch to the ON position.
  2. Place the left heated seat switch to the HIGH position.
  3. Place the left heated seat switch to the LOW position.
  1. The left heated seat heats on HIGH.
  2. The left heated seat heats on LOW.

Heated Seat Inoperative

2
  1. Turn the ignition switch to the ON position.
  2. Connect the right seat belt buckle.
  3. Place the right heated seat switch to the HIGH position.
  4. Place the right heated seat switch to the LOW position.
  1. The right heated seat heats on HIGH.
  2. The right heated seat heats on LOW.

Heated Seat Inoperative

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.