2011-2017 Buick Regal Accessory Drive Belt: A Complete Guide
Learn to spot the signs of a failing accessory belt on your Regal and choose the right part for the job.
- Inspect your belt regularly after 60,000 miles for cracks and fraying.
- A squealing noise is the first warning sign; don't ignore it.
- Certain 2012 models had a factory issue with defective belts that could break prematurely.
- Replacement is more complex on this car than many others; professional installation is recommended for most owners.
Is Your Buick Regal's Accessory Belt Failing?
A worn-out accessory drive belt gives clear warning signs before it breaks. Ignoring them can leave you stranded. Look for these common symptoms of a failing belt on your 2011-2017 Regal.
Key Failure Symptoms
- Squealing or Chirping Noises: This is the most common sign. A high-pitched squeal, especially when you start the engine or turn the steering wheel, usually means the belt is slipping because it's worn or the tensioner is weak.
- Visible Wear and Damage: Pop the hood and inspect the belt. If you see multiple cracks, frayed edges, missing chunks of the ribbed section, or a shiny, glazed surface, the belt is old and needs to be replaced.
- Power Steering or A/C Problems: If your steering suddenly becomes heavy and difficult, or your A/C stops blowing cold air, the belt may be slipping and failing to power those accessories properly.
- Battery Light or Overheating: A battery warning light on your dash indicates the alternator isn't charging, likely due to a slipping belt. If your engine temperature gauge starts to climb, the belt may have stopped turning the water pump, which is a critical failure.
Known Issue: 2012 Buick Regal Serpentine Belt
General Motors issued a service program (No. 12032) for certain 2012 Buick Regal vehicles. Some factory-installed serpentine belts had manufacturing defects that could cause them to break unexpectedly, leading to a loss of battery charging. While the free replacement period has expired, it highlights a known potential weakness for this specific model year.
Choosing the Right Aftermarket Belt
For a part like an accessory belt, a high-quality aftermarket brand is often just as good as the original equipment (OEM) part. The key is choosing a reputable manufacturer. Both ACDelco and Bando are excellent choices available for your Regal.
- ACDelco: As GM's official parts brand, ACDelco is considered the original equipment supplier or the closest equivalent. Choosing an ACDelco belt ensures a perfect fit and reliable performance, just like the part your Regal came with from the factory. They are a trusted, go-to option for any GM vehicle.
- Bando: Bando is a major OEM supplier for many car manufacturers and has a strong reputation for quality and durability. They are a highly-regarded aftermarket brand that offers OEM-level performance, sometimes at a more competitive price.
Pro Tip: When replacing your belt, it's a good idea to inspect the belt tensioner and idler pulleys. These parts can also wear out and cause noise or belt failure. Many brands offer complete kits that include the belt, tensioner, and pulleys for a full system refresh.
Accessory Drive Belt Replacement Cost for 2011-2017 Buick Regal
The cost to replace the accessory drive belt depends on your choice of parts and whether you do the job yourself or hire a professional mechanic.
| Part / Service | Estimated Cost |
|---|---|
| New Aftermarket Belt | $20.98 - $56.54 |
| New OEM Belt | $25 - $40 |
| Shop Labor | $180 - $350 |
| Total Professional Replacement | $200 - $400+ |
Note: Labor costs are higher for this vehicle than many others because accessing the belt and tensioner can be difficult, sometimes requiring the engine to be supported and lowered for clearance.
Frequently Asked Questions
How often should I replace the accessory belt on my Buick Regal?
Most modern serpentine belts last between 60,000 and 100,000 miles. It's best to start visually inspecting the belt for cracks or fraying during oil changes after 60,000 miles and plan for a replacement based on its condition.
Is the accessory belt the same as a serpentine belt?
Yes. The terms "accessory drive belt" and "serpentine belt" are used interchangeably. They both refer to the single, ribbed belt that winds through the engine's pulleys to power accessories.
Can I replace the belt myself?
For the 2011-2017 Buick Regal, this job is more difficult than on many other cars. Access to the belt and tensioner is very tight, especially on the 2.4L engine. While it is possible for an experienced DIYer, it may involve removing the passenger-side wheel and fender liner, and potentially supporting the engine to gain clearance. If you are not comfortable with these steps, it is best to leave this job to a professional.
My new belt is squeaking. What's wrong?
If a new belt is squeaking, the noise may not be from the belt itself. The cause is often a weak or failing belt tensioner that isn't providing enough pressure, or a misaligned or worn pulley. You can test this by spraying a small amount of water on the belt while the engine is running; if the noise stops temporarily, the issue is likely belt slip (possibly due to a bad tensioner), but if it continues, a pulley bearing may be bad.
Technical Specifications
OEM Part Numbers: 12627134
The correct belt varies by engine (2.0L Turbo vs 2.4L) and model year. For example, OEM part number 12627134 fits many 2014-2017 models with the 2.0L and 2.5L engines. Always verify the exact part number for your specific vehicle configuration before ordering.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Buick Regal: