NHTSA lists 3 safety recalls covering the 1999 Buick Park Avenue. Open recalls don't stop you from selling or junking the car, but check your VIN at nhtsa.gov/recalls to see which apply to yours.
Fuel System, GasolineFeb 2004 · NHTSA campaign 04V090000
On certain passenger vehicles equipped with 3800 v6 (l36) engines and certain delphi fuel pressure regulators, the regulators have a much higher than usual rate of fuel leaks. A leak can allow fuel to enter the intake manifold through a vacuum line. If the engine does not start when cranked, the fuel from the leaking regulator and a…
Risk: The backfire can rupture the intake manifold. The rupture of the intake manifold can displace a fuel line, pulling an injector out of place, and causing a fuel leak and possible fire.
Service Brakes, HydraulicAug 1999 · NHTSA campaign 99V238000
Vehicle description: passenger vehicles. The brake booster to pedal assembly attachment nuts may be loose.
Risk: If these nuts are loose, the brake pedal may be low, the assembly may be loose, the brakes may not release, and if the nuts back completely off, braking may be lost. Also fume and water intrusion to the passenger compartment can occur.
Service Brakes, HydraulicApr 1999 · NHTSA campaign 99V081000
Vehicle description: passenger vehicles. These vehicles may have been built with incorrect front brake rotor, brake caliper assembly, brake pads, and caliper mounting bracket on either the left or right side of the vehicle.
Risk: A vehicle with this condition can pull to one side during a braking maneuver. In addition, vehicle stopping distance could be increased.