Periodically the engine will stop. This will generally occur while the car is in motion. This would cause a loss of power. When it occurs in traffic or on a curve this is exceptionally dangerous. It will restart by shifting into neutral and turning the ignition. It will occur anywhere, while turning or driving straight. This has continued for several years.

- Lititz, PA, USA

Sudden engine failure. I own a 99 Buick Park Avenue ultra that has about 65,000 miles on it and is well maintained. The car is only utilized about 6 months out of the year since we are snow birds having returned from the East 2 months ago. Last evening as I drove North and up one of the long hills on the toll rd 73 in orange county, ca I experienced the sudden and total loss of engine power while traveling between 65 and 70 mph. All electrical systems, headlights, dash lights etc stayed on and appeared normal. Fortunately the traffic was such that I was able to pull over to the side of the road, stop and turn on my hazard warning lights. I sat for a moment and then tried to restart the engine. The cranking appeared normal and the engine immediately started and the engine parameters, temperature, volts, etc appeared normal. I was surprised to say least but we decided to start moving again and proceeded to drive pretty much at normal speeds without a hiccup the 20 miles left to get home staying in the rh lanes for the most part. Getting back into the fast moving stream of traffic was somewhat hazardous in and of itself. Prior to this sudden failure there was no warning or change in performance. The only caveat to that is that it seems lately there has been a minor but noticeable sag or hesitation when starting to accelerate while in drive and at highway speeds.

- Los Alamitos, CA, USA

When I turned on the left turn, the lamp on the instrument panel had stopped blinking and stayed on, even when the switch was in the neutral position. Right-turn worked fine. The next day I could not start my car, the battery was completely dead. I was late for an important meeting. Later I found out that when the engine is off and the key removed from the ignition, all the lights on the left side of the car continued to burn, and that was the cause battery discharge. I started researching my problem on the internet and found out that many people faced the exact same problem. You can check google asking 'signal flasher problem Buick Park Avenue 1999', 'left turn always on Buick Park Avenue 1999' etc. According my estimation, at least thousand people met this problem the culprit is 'turn signal hazard flasher unit'. it is obvious that this unit has a built factory defects and it is dangerous, this unit unnecessarily misleads other drivers, and is responsible for hazard flashing. I believe that GM should replace this unit at all Buick Park Avenue 1997-2005. Factory defect is obvious and the buyer does not have to suffer because of the shortcomings of engineers. Please replace my turn signal hazard flasher unit for free.

- Thornhill, GA, USA

When the ignition key was turned, a small explosion was and the vehicle caught on fire.

- Ceresco, MI, USA

Negative post snapped from battery, causing electrical system to malfunction. Dealer has been notified.

- Holland, NY, USA