Camaro, Firebird, 1999 - 2002

Heater Core

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Removal & Installation




CAUTION
Some vehicles are equipped with an SIR or air bag system. The air bag system must be disabled before performing service on or around the air bag, instrument panel components, wiring and sensors. Failure to follow safety and disabling procedures could result in accidental air bag deployment, possible personal injury and unnecessary air bag system repairs.

  1. With the ignition key removed, disconnect the negative battery cable.
  2.  
  3. Disable the SIR system by removing or disconnecting the following:

    SIR fuse from the fuse panel
     
    Left side sound insulator
     
    Connector Positive Assurance (CPA) from the yellow 2-way SIR harness connector at the base of the steering column and separate the connector
     
    Squeeze the sides of the glove box and release it to access the heater core assembly
     

  4.  
  5. Drain the cooling system.
  6.  
  7. Remove or disconnect the following:
    NOTE
    Do not apply excessive pressure on the tubes or the heater core will be damaged.



    2 heater module cover retaining screws and remove the cover
     
    Clamp at the left side of the heater core
     



    Clamp from the heater core tubes on the engine compartment side. Carefully, remove the heater hoses from the core tubes. Plug the hoses to prevent leakage
     
    Pull heater core toward the rear of the vehicle to remove it

    Click image to see an enlarged view

    Fig. Heater hose and pipe routing-Camaro/Firebird with the 3.4L engine



    Click image to see an enlarged view

    Fig. Heater hose and pipe routing-Camaro/Firebird with the 3.8L engine



    Click image to see an enlarged view

    Fig. Heater hose and pipe routing-Camaro/Firebird with the 5.7L engine



    Click image to see an enlarged view

    Fig. Exploded view of the heater core removed from the heater module assembly-Camaro/Firebird

     

  8.  

To install:

  1. Install or connect the following:
    NOTE
    Lubricate the heater tubes with petroleum jelly for best sealing. Be sure the seals around the heater pipes remain in place.



    Position the heater core into place and then attach the heater hoses to the heater core tubes. Install the hose clamp
     



    Heater core clamp, then install the heater core module cover
     

  2.  
  3. Properly, refill the cooling system, then operate the system and check for leaks.
  4.  
  5. If equipped, enable the SIR system by installing connecting the following:

    Yellow 2-way SIR connector and insert the Connector Positive Assurance (CPA) at the base of the steering column
     
    Left side sound insulator
     
    SIR fuse in the fuse panel
     
    Negative battery cable
     

  6.  

 
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