When turning left at a traffic light, my car lost power and I wasn't sure I was going to make it around the corner. After a few seconds my car regained power. 45 minutes later, I made a right turn into heavy traffic and then felt a sudden lurch. I looked in the rear view mirror and saw that my trunk had popped open. I managed to get off the highway, parked the car and turned off the ignition. I got out, closed the trunk, got back in the car, and fastened my seatbelt. Before I could close the door, the trunk popped open again. This occurred three times before the trunk finally stayed closed. A few minutes later, I parked the car, opened the door, started to get out and the warning chime sounded. I got back in and saw that the on the console shift lever that indicates your car is in park was lit up even though the car was turned off. In order to get the light to go off, I had to restart my car and then turn it off again. Next I pushed the onstar phone button and asked to call my home. I got a busy signal. I called a second time and my husband at the number I was calling, heard me telling onstar call my home' but I couldn't hear him trying to talk to me. All of these things happened within 1 1/2 hours. The next day, I found that I could not lock the door by touching the lock spot on the outside door handle. Then I could not unlock the car door by pulling on the door handle when the key was in my pocket. I have had the car for 1 year and eight months and the driver's memory seat has often lost its memory. Sometimes just one button but most of the time both buttons. Prior to this I had been having trouble with my trunk. I'd leave my car parked in a public parking lot and come out to find my trunk wide open. On May 3rd the GM dealer replaced a part hoping to fix this problem.

- Pigeon, MI, USA

While driving vehicle, vehicle electronics went inopt while cruising down highway at 60 mph. Speedometer, instrument cluster, turn signals, navigation and radio were all inopt.

- Katy, TX, USA

This vehicle has the push button keyless start. Page 10-89 of the owner manual describes the method to move the transmission lever from park to neutral without starting the engine, for the purpose of towing the vehicle or moving it without starting the engine (if the car battery is dead or the engine will not start for any other reason), such as onto a tow truck for Transport to a service center. The manual says to set the parking brake (this cannot be done if the car battery is dead because the parking brake is electrically operated), select the accessory mode (by pushing the start button to show an amber light as described on page 9-20), then squeeze the small lever on the front of the transmission lever, and move it from park to neutral. This does not work. The lever cannot be moved out of park. Applying the foot brake does not help. I took the car to Liberty Buick in peoria, AZ, and described the problem to salesmen and service advisors. None of them could make it work or explain why. This procedure was tried with another Lacrosse with the keyless start feature and it also did not work, verifying that this is a problem with all Lacrosse keyless start vehicles. This procedure works with a "keyed start" vehicle if the key is turned to the 'on' position (not the 'accessory' position as stated in the manual). Apparently, insufficient testing was done on this feature and it was not correctly programmed into the electronic system of the vehicle. The interlock between the engine, brake, and transmission lever is not released in the accessory mode and there is no 'on' position for the keyless ignition without starting the engine. This means that if my car is in my garage or on a road and the battery is dead or the engine will not start, I will be unable to move it out of the garage or out of traffic or onto a tow truck.

- Surprise, AZ, USA

The contact owned a 2011 Buick Lacrosse. The contact stated the vehicle had a push button start engine and when he pushed the button to turn the vehicle off, the engine would start while he was walking away. The vehicle remained on for ten minutes during the last two times the failure occurred; however, the dealer stated it was computerized and offered no assistance. The manufacturer was notified and also stated it was all computerized and offered no assistance. The VIN was unavailable. The failure mileage was 435.

- Warwick, RI, USA