general problems of the 2008 Buick Lacrosse - part 2

The door locks do not work at all, or sometimes they work, and if they work it is only one door, and if you put the car in park and take the keys out, the doors will not unlock. They do not work with the key fob either. Also when driving the dashboard goes black, and so does the radio, can not see anything on the dashboard, and then it will turn on, it goes in and out randomly, not all the time. Also when driving the a/c will go real low when it is on high, and then it will return to high again it does this as I am driving and while I am at a stop light.

Underhood fuse block caught on fire from the headlamp driver module micro-relay #35 melting down. Headlights went off and the battery started draining. Pulled over, turned off the car, and opened the hood to discover that the #35 micro-relay was arcing and had melted itself to micro-relays #44 windshield wipers and #38 air conditioning compressor. Both windshield wipers and air conditioner was off at the time. Even though the engine was off the relay continued to arc and was melting the underhood fuse block. Grabbed an insulated set of pliers and pulled the #35 micro-relay (the #44 and #38 relay came out at the same time). Arcing stopped with the micro-relays removed. I have filed a previous report on the #35 headlamp driver module micro-relay, because it had turned off the low-beam headlights while I was driving, at night, on the highway. Turning the light switch to manual-on did not turn the low-beam headlights back on. I had the #35 headlamp driver module micro-relay replaced and it too proved to be defective. After just a few months, it started turning on the headlights about 10 minutes after the vehicle was turned-off. Had to have my vehicle jump started, replaced the battery, and replaced the #35 headlamp driver module micro-relay, yet again. The 3rd #35 headlamp driver module micro-relay, caused an electrical fire, costing me over $700 to repair. Apparently there is no fuse to prevent the melt-down of the micro-relays. There is no caution, and no warning in the owners manual, to advise the user about what to do in the case of the low-beam headlights suddenly going off. There is no protection against an electrical fire being caused by the #35 headlamp driver module micro-relay, or any other relay from starting an electrical fire.

Experiencing problems with the automatic door locks. Sometimes they work & sometimes they don't! sometimes when I hit the unlock button only the driver side unlocks. When I hit the lock button I have to manually lock all passengers doors. Also having problems with the instrument panel lights intermittently will fail causing limited visualization of the gauges. Also have a clunking noise on the right side.

Electric door locks work intermittently.

Tl- the contact owns a 2008 Buick Lacrosse. The contact stated that while driving approximately 40 mph, the engine seized which affected the steering, brakes and all electrical power seized. The vehicle was towed to the dealer mechanic. The coil and mother board were replace. The vehicle was repaired. The failure recurred. The vehicle was taken back to the dealer mechanic. The vehicle was repaired. The manufacturer was notified about the issue. The approximate failure mileage was 136,000. Bd.

We have a problem with our automatic power door locks and the remote start feature. They don't work, either by key fob or the power door lock buttons in the car. The only way we can lock our doors is manually. We took to the dealer believing it to be just the drivers door but they told us all our door lock actuators needed to be replaced, close to $1000. 00 repair with no guarantee that the actuators are the true problem. After going on the NHTSA site I see that we are not alone with these problem. I can understand a actuator going bad, but not all of them at one time. I am a former dealership gsm and very aware of "normal wear and tear" and "defects". I've never in my 35 years in the business seen this with door locks. I was insulted by their offer to repair them.

The power door locks do not work either with door switches or the remote fab. Only way to lock or unlock doors is to manually lock or unlock doors, except drivers door which will lock and unlock with key. Remote start doesn't work because door can't be locked with fab. Took to dealer and was told that all 4 doors needed to have the actuators replaced. Priced over $1000. 00. They offered to pay $350. 00. It seems to me that there are problems with the control unit that sends signals to actuators, both by door switches and the fab. Based on the complaints filed I am not alone with, not only, this very expensive problem, but a severe safety issue.

The contact owns a 2008 Buick Lacrosse. The contact stated that the pts warning indicator illuminated and the seats overheated. The vehicle was taken to a dealer where it was confirmed that the seat sensor and the pts module needed to be replaced. The vehicle was repaired, but the failure recurred. The contact mentioned that the pts module was replaced on two other occasions. The manufacturer was made aware of the failure. The approximate failure mileage was 70,000.

While driving at 55mph I ran over a road bump and my 2008 Buick Lacrosse super shut off(stalled). I coasted to the burm, hit brakes to a stop. The car started on the first try. Continued my trip with no incidences. Took to dealer and no codes showed in their computer. Called gm customer assistance and they gave me a case number. No bulletins. Scary to drive. Traffic was light this time but may not be the next time.

The fuel level sensor located in the gas tank has failed three times in the past three years. Each time the dealer has replaced the fuel level sensor. This has occurred first in Dec. 2008 (7574 miles), then Nov. 2009 (21145 miles), and now Dec. 2010 (37344 miles). The service tech at the dealership informed me that this problem is fairly common (in fact, when I took the car in for repair this time, there was a pontiac aztec with the same problem being repaired). The tech also told me that the cause is sulfur in the gas causing the small wires in the sensor to corrode and eventually break. The module error code error is p0463.