GM Cavalier/Sunfire 1995-2000 Repair Guide

Heater Core

Print

REMOVAL & INSTALLATION



See Figure 1

  1. Disable the SIR system, as outlined in this section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Properly drain the cooling system.
  6.  
  7. Raise and safely support the vehicle.
  8.  
  9. Detach the heater hoses from the heater core.
  10.  
  11. Carefully lower the vehicle.
  12.  
  13. Remove the instrument panel. For details, please refer to the procedure located in Body & Trim of this guide.
  14.  
  15. Remove the DERM with the attaching bracket.
  16.  
  17. Detach the heater core cover.
  18.  
  19. Unfasten the heater core mounting clamps, then remove the heater core.
  20.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the heater core and related components

To install:
  1. Position the heater core, then secure with the mounting clamps.
  2.  
  3. Attach the heater core cover.
  4.  
  5. Install the DERM with the attaching bracket.
  6.  
  7. Install the instrument panel, as outlined in Body & Trim of this guide.
  8.  
  9. Raise and safely support the vehicle.
  10.  
  11. Connect the heater hoses to the core.
  12.  
  13. Carefully lower the vehicle.
  14.  
  15. Properly refill the engine cooling system and check for leaks.
  16.  
  17. Enable the SIR system.
  18.  
  19. Connect the negative battery cable, then start the engine and check for proper system operation and/or leaks.
  20.  

 
label.common.footer.alt.autozoneLogo