GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 Seville 🢒 Engine 🢒 Engine Cooling 🢒 Heater Core Replacement

Removal Procedure

    Object Number: 292121 Size: SH
  1. Disconnect the heater hoses from the heater core. Refer to Heater Hoses Replacement .
  2. Remove the instrument panel assembly. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gages and Console.
  3. Remove the heat shield .
  4. Remove the heater core cover fasteners (1).

    5. Object Number: 292125 Size: SH
  5. Remove the heater core retaining fasteners (1).

    6. Object Number: 292087 Size: SH
  6. Remove the heater core retaining straps.
  7. Remove the heater core.
  8. Remove the heater core case seals.

Installation Procedure

    Object Number: 292087 Size: SH
  1. Install the heater core.
  2. Install the heater core retaining straps.
  3. Install new heater core case seals.

    4. Object Number: 292125 Size: SH
  4. Install the heater core retaining fasteners (1).

    5. Object Number: 292121 Size: SH
  5. Install the heater core cover fasteners (1).
  6. Install the heat shield.
  7. Install the instrument panel assembly. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gages and Console.
  8. Connect the heater hoses to the heater core. Refer to Heater Hoses Replacement .