Problems · by component
2005 Buick Terraza electrical system problems
37 owner complaints to NHTSA about the 2005 Buick Terraza cite electrical system, 31% of all 120 complaints for this model year.
Complaints
37
31% of all complaints
Crashes
2
Reported by owners
Fires
1
Reported by owners
Injuries
1
Reported by owners
What owners say about the electrical system
Verbatim from NHTSA complaints, newest first
“BRAKES FELT UNEASY STOPPING DID NOT RESPOND RIGHT AWAY SOMETIME HAD TO PULL A SIDE TO PREVENT ACCIDENT. ALTERNATOR DON'T START AT ALL AND ABS LIGHT STAYED ON MOST OF TIME MANY REPAIRS DONE SAME PROBLEM AT DEALER SHIP.”
“THE IGNITION SWITCH WAS DISENGAGED WHEN THE VAN HIT A BUMP WHILE IN MOTION ON A HIGHWAY. I WAS ABLE TO PUT IT IN NATURAL AND RESTART IT BUT IT WAS A VERY FRIGHTENING ORDEAL. THIS HAS ALSO HAPPENED ON STREETS TRAVELING 30 MPH.”
“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”
“DURING CRUISE ON HIGHWAY (I-95 IN FLORIDA) WHILE ON VACATION THE LEFT REAR POWER SLIDING DOOR BECAME UNLATCHED AND WARNING CHIMES SOUNDED REPEATEDLY AND INTERIOR LIGHTS ILLUMINATED, THIS OCCURRED SEVERAL TIMES AGAIN ON THIS TRIP THERE WAS AN INVESTIGATION BY THE NHTSA IN 2008 REPORT #EA07019 WHICH DETERMINED NO DEFECT WAS PRESENT WHICH WOULD REQUIRE A RECALL. I BEG TO DIFFER WITH THAT ASSESSMENT THERE MOST CERTAINLY IS A PROBLEM HERE, GM ISSUED TSB #07-08-007 AND #07-08-007 A-D WHICH TELLS DEALERSHIPS HOW TO REPAIR THIS PROBLEM. PLEASE LOOK INTO THIS MATTER AGAIN IT IS VERY UNSETTLING TO HAVE MY KIDS RIDING IN THE REAR AND HAVING A DOOR UNLATCH AT HIGHWAY SPEEDS THANK YOU FOR YOUR TIME AND CONSIDERATION. *TR”
“TL* THE CONTACT OWNS A 2005 BUICK TERRAZA. THE CONTACT STATED THAT THE KEY WAS BUMPED AS THE CONTACT DROVE OVER A SPEED BUMP AND THE VEHICLE STALLED. IN ADDITION, WHEN ATTEMPTING TO RESTART THERE WAS AN ABNORMAL NOISE COMING FROM THE VEHICLE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 144,499.”
“WE WERE PULLING INTO WALMART PARKING LOT AND HIT STREET BUMP THAT TURN ONTO WALMART'S PROPERTY AND THE SUDDEN JERK MADE THE KEYS POP OUT OF THE IGNITION WHILE THE VAN WAS IN MOTION. THE KEYS WERE ON THE FLOOR BUT THE VEHICLE WAS STEEL IN MOTION. AS WE PARKED THE VEHICLE I PUT THE KEY BACK INTO THE IGNITION LIKE NOTHING EVER HAPPENED. I TURN THE VAN OF, THEN WAITED A FEW MINUTE AND STARTED THE VEHICLE AND BEHOLD THE KEY WOULD SURELY COME OUT. I CONTACTED THE DEALER SIERRA CHEVROLET IN BARTLET, TN AND THEY CHECKED THE VEHICLE OUT AND SAID IT WAS A BAD CUT IN THE KEY. THAT MEANS A BUMP KEY WOULD START THE VEHICLE. THE IGNITION SWITCH IS FAULTY, AND SEEING GM RECALL LIST, THE BUICK TERRAZA 05 SHOULD BE ON THAT LIST. I'M WRITING BUICK/GM WITH THIS STATEMENT AND REQUEST. *TR”
Showing 6 of 37 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.