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Exterior lightingPart report

2005 Buick Terraza Exterior lighting Problems

Complaints
5about this part
Share
4%of 120 total for the year
Median mileage
50,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the exterior lighting of the 2005 Buick Terraza, 4% of the 120 complaints for this model year. Where a mileage was given, the median is 50,000 miles. 1 of these say a crash was involved and 1 a fire, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact owns a 2005 Buick Terraza. The contact stated that the headlights burned out, both of the rear wheels had no tread and the rear wiper blade failed to work. The vehicle was taken to an independent mechanic for diagnostic testing. The technician diagnosed that the headlights, rear wheels and rear wiper motor needed to be replaced. The manufacturer was not notified of the failure. The approximate failure was 137,000. Updated 9/19/2017”

NHTSA complaint #10677011, filed 2015-01, 137,000 miles

“The contact owns a 2005 Buick Terraza. The contact stated that the headlights would flicker on and off on an intermittent basis. On one occasion the lights failed completely and illuminated again several moments later. In addition, the contact stated that the driver's side heated seat overheated and burned one of the contact's legs. The vehicle was not taken to the dealer or an independent mechanic for diagnosis. The manufacturer was contacted and offered no assistance. The vehicle was not repaired. The failure mileage was approximately 50,000. The current mileage was approximately 100,000. …”

NHTSA complaint #10492087, filed 2013-01, 50,000 miles

“The contact stated the headlights flickered when the vehicle was driven 0-60 MPH. When the vehicle was taken to the sales/service dealer, the problem could not be recreated. The voltage regulator was replaced, but the problem continued. The lights failed to remain bright enough to see well at night. The computer programming was reflashed. The vehicle also had an ongoing issue with the starter, sliding door opening by itself when the vehicle was parked or while idling in park. On one occasion, the child passenger fell out of the vehicle when the door opened. There were no injuries sustained. …”

NHTSA complaint #10175575, filed 2006-12, 29,000 miles

“Dt: the contact stated while driving all of the lights dimmed. The fan motor lost power. This happened eight times on a ten mile drive. The vehicle has been to the dealership , and they replaced multiple components, but the problem got worse. The engineers for the manufacturer sent the service department 40 tests to run on the vehicle to diagnose the problem, but nothing was found. The zone manager for the manufacturer stated they were aware of the problem, but did not deem it a safety hazard. …”

NHTSA complaint #10146351, filed 2005-12

“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. …”

NHTSA complaint #10141274, filed 2005-10

Related service bulletins

Exterior lighting: other model years

YearComplaintsShare of year
200713%
200554%

Other parts of the 2005 Buick Terraza

Electrical system
37 complaints
Electronic stability control
29 complaints
Brakes
19 complaints
Latches, locks and linkages
16 complaints
Steering
14 complaints
Body and structure
12 complaints
Suspension
12 complaints
Other or unknown
11 complaints
Transmission and drivetrain
7 complaints
Air bags
4 complaints
Engine
4 complaints
Engine cooling
4 complaints

← All problems reported for the 2005 Buick Terraza

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology