Problems with 2005 Buick Terraza POWER TRAIN

Tl* the contact owns a 2005 buick terraza. the contact stated that the vehicle experienced stalling while driving in inclement weather. the esc warning indicator illuminated. the vehicle was taken to the dealer; however, the vehicle could not be diagnosed. the vehicle was not repaired and the failure recurred. the vehicle was returned to the dealer where the technician diagnosed that there was a failure with the electrical system; however, they could not diagnose the failure. the vehicle was not repaired and the failure recurred. the vehicle was taken back to the dealer where it was diagnosed that the transmission was defective and needed to be replaced. the vehicle was repaired, but the failure recurred. the manufacturer was notified of the failure. the failure mileage was approximately 74,953. updated 06/29/16*lj *tr

While trying to shift, the shifting lever disconnected to the transmission. this made it impossible to shift gears. the shifting assembly appeared to come apart. i am not able to use the vehicle due to this . *tr

Dt*: the contact stated the automatic sliding door locked by itself and would not open by the key or power controls. the vehicle was seen by a dealer for replacement of the power door lock motor. although the door lock problem was corrected, the door rattled while driving at various speeds. the vehicle is currently awaiting further inspection by the dealer. *ak updated 5/10/2006 - the vehicle rolled back while on hills. *nm

Vibration at 50+ mph. pulsating, vibrating when braking. uneven wear on tires (feathering) noticed at 3,000 miles. horn takes a lot of pressure to make it work. 2 metro buick dealers say all above is normal and can not find anything wrong. one dealer printed 2 service bulletins to show me gm says it is normal. headlights and interior lights dim and brighten on their own. have had numerous oncoming cars blink their high beams at me thinking my high beams are on. i was denied in my request for a buick official to get involved. van is now 9 months old and only 8,000 miles because it is unbearable to drive with all that shaking. *nm

Dt: the contact stated had a technician from gm look at his car because he was having many problems with his horn. e noticed problems with the horn on or around 5-20-05. it was very hard to push. the horn. you almost have to take a hammer to get it to blow. the dash lights are also very dim. he has found several complaints on the nhtsa website about the horn not blowing. transmission kicks into passing gear too much going up slight grades on the interstate at 65-70 mph. the contact has driven other cars on the same interstas with the same average loads and with less horsepower and they didn't kick into the passing gear as much. the tech that gm sent out, said everything was normal. *ak

Dt: the contact tried to using the horn but most of the time could not get it to blow. even when pressing hard on the horn it would not work. one must hit it correctly in order to get it to work properly. he has taken the vehicle to the dealer, who agreed it took a lot of force for the horn to work. the dealer had a representative look at the horn. the representative was doubtful that gmc would fix the horn. he stated it was a sensor that failed, it send a message to the steering wheel, and it was sending wrong information. when pressing the accelerator the brakes would clamp down and slow down the vehicle. this would cause the vehicle to stop while in motion to continue on. the contact stated the headlights brighten and dim on their own. the dealer replaced the alternator in order to correct the problem. the vehicle was having the same problem. *ak