Generally, it's considered a moderately difficult job, falling somewhere between "easy weekend project" and "professional mechanic required." Here's why:
* Access: The fuel tank is usually located under the car, meaning you'll be working in a cramped and potentially messy space. Getting to the sending unit involves dropping the fuel tank (at least partially) on most Bonnevilles. This requires disconnecting fuel lines, electrical connectors, and possibly the fuel pump depending on the design.
* Fuel Handling: Dealing with gasoline requires caution. You'll need to properly drain the tank (or at least significantly lower the level), disconnect the fuel lines safely, and handle them to prevent spills and potential fire hazards. This is a safety-critical aspect of the job.
* Mechanical Skill: You'll need basic mechanical skills involving tools, fasteners, and potentially some electrical work (disconnecting and reconnecting the sending unit connector).
* Vehicle-Specific Challenges: The exact procedure varies considerably between model years. Some Bonnevilles may have easier access than others, or different tank designs that affect the complexity of the process. A Haynes or Chilton repair manual for your specific year and model is essential.
In short: If you're mechanically inclined, comfortable working under a car, and understand fuel system safety, you *might* be able to do it yourself. However, if you're not comfortable with any of these, it's best to take it to a professional mechanic. The risk of causing damage or creating a safety hazard outweighs the cost of professional labor in many cases. The time investment can also be substantial.
