One problem related to trunk wiring has been reported for the 2008 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Buick Lacrosse based on all problems reported for the 2008 Lacrosse.
For the third time, this vehicle has died at a standstill for no apparent reason. It will be performing well until parked. After a span of time, it will not restart. When key is inserted into ignition, the motor will not catch or turn over, the key will freeze or lock in the ignition in the "on" position, nothing in the vehicle can be operated - gear shift, radio/player, door locks, trunk lid, etc. , etc. Etc. The car is completely seized up. Inspection will disclose that battery, including brand new battery, is dead ( no voltage whatsoever). Only way to restart vehicle is to recharge battery. This has happened three times over span of 9 to 10 months. When battery is recharged, vehicle will operate for months until it is dead again. Something is draining the battery, but there no logical explanation; nothing such as radio, lights, etc. , is being left on. Some auto repair people believe there is a short in the car's wiring harness; others believe the defective ignition system is at fault.