My vehicle was receiving a PA state required annual mechanical safety inspection by an ASE certified mechanic. I was informed that the "sway bar" which stabilizes the steering system had failed, and as a critical part of the steering operation, the vehicle could not pass a PA state mechanical safety inspection. I had the "sway bar" replaced with the GM re-designed part at considerable expense to pass the PA state safety inspection. The ASE certified mechanic advised me that he had replaced many mechanical failures like mine (broken lug ends) before GM changed the design to one that could withstand the application (a solid forging as opposed to a sheet metal fabrication). I wrote to the CEO of Buick/GM (see attached letter) to request an explanation as to why a known safety defect like the "sway bar" was not recalled when it was first discovered, resulting in a re-design of the "sway bar" for subsequent production models. I received a telephone response from the GM Executive Team, who called himself "Debbie", at 1.855.880.1500, extension 5917674, Reference Number [XXX], on 26 July 2023. "Debbie" refused to document GM's position on this issue in writing, and only emphasized that a safety recall with this known safety issue was never issued. It appears that GM has deceived the NTHSA and gotten away with a cover-up. Regardless of the time that GM has kept this hidden from the federal safety agency, GM should be required to recall all affected vehicles and repair them at their expense. Thank you. [XXX] PE INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The worst 2003 Buick Century problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Lights49
- Electrical23
- Brakes16
- Engine15
- Body11
- Steering7
- Acceleration6
- Transmission6
- Suspension5
- Visibility5
- Fuel system4
- Tires4
- Airbags3
- Seats3
- Driver assistance2
- Locks2
- Wheels1
Specific symptoms reported on the 2003 Buick Century
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2003 Buick Century 400
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
- This Preliminary Information communication provides information to the technician about vehicles that have...
- This Preliminary Information communicates to the dealer the process for downloading or updating operating...
- This Preliminary Information communication provides information to the technician about vehicles that the...
- This Preliminary Information communication provides information to the technician about changing the tire...
- Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles
- GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities
- This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves...
- This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as...
- This service bulletin provides information for dealers/technicians on Service Programming System (SPS)...
2003 Buick Century fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 3.1L 6‑cyl | FWD | 18 | 26 | 21 |
What 2003 Buick Century owners say
Most recent owner complaints, unedited.
Service engine light and gas light came on. Code read at autozone indicated po135- oxygen sensor. Two days later, both check engine lights came on, security, battery and gas lights. Even revved up and had other issues with fuel economy and compressor kicking on and failing to start. Other issues, popping noise when turning steering wheel. The consumer stated the manufacturer was contacted. The manufacturer offered a loyalyty certificate a leased vehucle or a possible reimbursement of 500.00 for repairs. Neither of the remedies satisfied the consumer. The consumer requested to have the vehicle repaired at no cost or be reimbursed 3,500.
The vehicle's gas tank won't hold much and clicks as if full. Also, when on uneven pavement or ground, the ⛽ gas warning light comes on, even after gas was just put in. In addition, at times I smell a "burning electrical" smell and the headlights go out, the brights fail to "click" on or goes off by itself. The turn signal lights have to be turned manually to blink. All turn signal lights have been replaced multiple times and this does not fix the problem. The back turn signals work and light up, but not the front & blink at a faster rate. Even one side headlight engagement was replaced and the problems still exist.
Horn button is part of air bag. The horn button shorts out and the horn blows all the time. Have to remove fuse to stop horn blowing. Had to replace air bag to fix. In a few months the problem reoccurred. Its too expensive to replace air bags so I am left without a horn this is a safety issue. Can the manufacturer provide a fix? The internet shows this is a very common problem for a lot of gm cars.
Bright lights won't stay on.
Tl* the contact owns a 2003 buick century. While driving various speeds, the headlights suddenly shut off. The contact indicated that the failure mainly occurred while switching from low to high beam and vice versa. The failure was not diagnosed or repaired. The manufacturer and local dealer were not notified of the failure. The failure mileage was 98,000. *tt
Bright lights won't stay on and sometimes if you can get them to come on they will go out while driving. Was on a city street and turned right , they went off. Since then you can hold the bright light switch, but when you turn loose they goes off.
Tl* the contact owns a 2003 buick century. While driving 35 MPH, the headlights failed to respond. The local dealer was not contacted. The manufacturer was not notified of the issue. The vehicle was not diagnosed or repaired. The failure mileage was 132,704.
Was driving up a grade and the vehicle failed to downshift to climb the grade properly on the freeway so remained at 60 MPH while in drive. Vehicle also seemed to accelerate under its own power where I had to stop the vehicle by putting it into neutral in order to brake safely almost as if I was braking as the vehicle was accelerating. I was at 55 MPH on a flat service without even touching the accelerator. I did notice higher rpms while in neutral. I did take it to a garage and they could not duplicate the problem and my front brakes needed to be replaced under the circumstances. The vehicle wasn't throwing any codes either. I know I'm not the only one that has witnessed this issue and I'm sure the mechanic I took it to did his job properly in attempting to diagnose the issue however it just couldn't be duplicated. Not about to pay diagnostic fees at different places if I'm chasing after a ghost. Any feedback is truly helpful but now my wife is left driving a car subjected to having that same issue in the near future quite possibly and we just had a garage sign off on not being able to duplicate the problem. Hope this information helps.
Turn brights on and radio/clock light goes off. No headlights on during day driving, radio/clock light randomly goes on and back off. Head lights briefly gone off during night driving 3 different times only for maybe 5 seconds, but it only takes a second for a deer or object to appear at night or a car ahead braking suddenly. Speedometer back light does not illuminate for night driving. Trac off and anti lock warning lights continuously stay on, I have had my brakes replaced throughout the years of owning the car since october 2007 and the warning lights do not reset themselves as they should, they continuously stay on since 2009. I am tired of dealing with all of these electrical and lightening issues with this car. I have tried to find gm recall for these problems. Please tell me where and how I can have these defects fixed.
Compare the 2003 Buick Century
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Questions about the 2003 Buick Century
Is the 2003 Buick Century reliable?
Owners have filed 127 complaints about the 2003 Buick Century, close to a typical Century model year.
What is the 2003 Buick Century year score?
The 2003 Buick Century scores 75 out of 100 (average). The score compares it with the other model years of the Buick Century: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2003 Buick Century?
Lights, with 49 complaints, typically around 80,000 miles. Next is electrical (23).
How many recalls does the 2003 Buick Century have?
No recalls on record.
What year does the Buick Century have the most lights problems?
The Buick Century model years with the most lights complaints are 2003 (49 complaints), 1999 (24 complaints) and 2002 (24 complaints).
What gas mileage does the 2003 Buick Century get?
Official estimates for the 2003 Buick Century range from 21 mpg combined. The most efficient version (3.1L 6-cyl, FWD) gets 18 city and 26 highway.
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