GM Service Manual Online
For 1990-2009 cars only

Notice: Do not allow the metal coils of the blower resistor to become grounded to any metal surface. This may result in internal circuitry damage.

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Remove the A/C control relay bracket with the relay.
  3. Remove the blower resistor harness.
  4. Remove the stud from the dash panel, if necessary.

  5. Object Number: 281206  Size: SH
  6. Utility only- Cut the access cover (1) from the case.
  7. Cut all four sides of the cover in order to remove the three attaching screws. Use a sharp utility knife in order to cut the case. Make the cuts straight and clean because you must reinstall the access cover and the access cover must be visible to the customer.

  8. Remove the blower resistor.

Installation Procedure


    Object Number: 281206  Size: SH
  1. Install the blower motor resistor.
  2. Utility only- Apply a bead of black weather-strip adhesive over the cut-line areas (1).
  3. Utility only- Allow the adhesive to set for 15 minutes, or until the adhesive skins over.
  4. Install the stud to the dash panel, if necessary.
  5. Install the resistor harness.
  6. Install the A/C relay bracket into the body.
  7. Connect the negative battery cable.