How hard it is to change depends on several factors:
* Which component is actually failing: Is it the blend door actuator (controls air temperature), the expansion valve (controls refrigerant flow), or something else entirely? Diagnosing the exact problem is crucial.
* Your mechanical aptitude: Are you comfortable working on cars? This is not a beginner-level repair. It involves working with refrigerant, which requires specialized tools and knowledge to handle safely and legally. Improper handling can lead to injury or environmental damage.
* Access: The location of the component varies slightly by model year and trim. Some might be more easily accessible than others.
Difficulty Assessment:
If it's a simple blend door actuator issue and you're mechanically inclined, the difficulty might be a moderate 4 out of 10. You'll need to access the HVAC system, potentially removing parts of the dashboard. Replacing the actuator itself is relatively straightforward.
If it's the expansion valve, the difficulty jumps considerably to a 7 or 8 out of 10. This requires handling refrigerant, which necessitates proper evacuation and recharge procedures using specialized equipment. The location of the expansion valve within the AC system can also be less accessible. This is a job best left to professionals unless you have significant automotive HVAC experience.
Recommendation:
Unless you have experience working with automotive AC systems, including refrigerant handling, it's strongly recommended to take your Camaro to a qualified mechanic or AC specialist. Improper handling of refrigerant can be dangerous and expensive to fix. They have the tools and knowledge to diagnose the issue accurately and repair it safely. Getting a proper diagnosis before ordering parts is also critical; replacing the wrong component is a waste of time and money.