GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Avalanche - 4WD 🢒 Body and Accessories 🢒 Seats 🢒 Driver or Passenger Seat Cushion Heater Replacement

Removal Procedure

    Caution: If the passenger seat cushion foam is damaged when you remove the heater element, replace the passenger pressence system in order to prevent personal injury.

  1. Remove the seat trim panel. Refer to Front Seat Trim Panel Replacement .
  2. Remove the seat cushion trim cover. Refer to Seat Cushion Trim Cover and Pad Replacement .

    3. Object Number: 411299 Size: SH
  3. Peel the seat cushion heater off of the pad.
  4. Disconnect the seat cushion heater wiring harness.

Installation Procedure
  1. Replace the inflatable restraint passenger presence system if the passenger seat cushion foam is damaged. Refer to Inflatable Restraint Passenger Presence System Replacement - Front in SIR.
  2. Connect the cushion heater wiring harness.

    3. Object Number: 411299 Size: SH
  3. Install the seat cushion heater.
  4. Install the seat cushion trim cover. Refer to Seat Cushion Trim Cover and Pad Replacement .
  5. Install the seat trim panel. Refer to Front Seat Trim Panel Replacement .
  6. Re-zero the inflatable restraint passenger presence system for the front passenger seat. Refer to Passenger Presence System Rezeroing in SIR.