While you *could* attempt it yourself if you have considerable mechanical experience, the potential consequences of doing it incorrectly (e.g., overheating the engine, causing further damage) far outweigh the potential savings.
Therefore, your best option is to take your 1999 Cadillac DeVille to a:
* Qualified mechanic: This is the safest and most reliable option. They have the experience and tools to do the job correctly.
* Repair shop specializing in Cadillac vehicles: These shops often have mechanics familiar with the specifics of your car's model and year.
* Dealership: While potentially the most expensive option, a Cadillac dealership will have factory-trained technicians and access to genuine parts.
Attempting the repair yourself without the proper knowledge and tools could lead to costly damage to your vehicle.
