Buick is a General Motors vehicle brand offering premium SUVs and crossovers in the United States. Owners and prospective buyers often search for the Buick corporate office after a dealership, service department or customer-assistance representative has not resolved a warranty, repair, recall, purchase, financing, roadside-assistance, connected-services or vehicle-safety complaint.
Buick’s corporate operations route through General Motors’ global headquarters at 1240 Woodward Avenue in Detroit. The current GM corporate number is 1-313-667-1500. For vehicle questions and consumer complaints, Buick Customer Assistance can be reached at 1-800-521-7300.
Buick corporate operations are based at General Motors’ headquarters at 1240 Woodward Avenue in Detroit.
Buick Corporate Office and Headquarters Information
- Brand: Buick
- Parent Company: General Motors Company
- Buick Corporate Office Address: 1240 Woodward Avenue, Detroit, MI 48265
- GM Physical Headquarters Location: Hudson’s Detroit, 1240 Woodward Avenue, Detroit, MI 48226
- Public Entrance One Address: 1232 Woodward Avenue, Detroit, MI 48226
- General Motors Corporate Phone Number: 1-313-667-1500
- Buick Customer Assistance: 1-800-521-7300
- Customer-Assistance Hours: Monday–Saturday, 8:00 a.m.–9:00 p.m. Eastern Time; Sunday closed
- Telecommunications Relay Assistance: 711
- Buick Customer Assistance Mailing Address: P.O. Box 33172, Detroit, MI 48232-5172
- Official Website: Buick.com
- Contact, Chat and Support Request: Contact Buick
- Buick Support Center: Buick Vehicle and Account Support
- Owner Center: Buick Owner Center
- Dealer Locator: Find a Buick Dealer
- Roadside Assistance: 1-800-252-1112
- OnStar: 1-888-4ONSTAR or 1-888-466-7827
- GM Financial: 1-800-284-2271
- GM Stock Symbol: GM on the New York Stock Exchange
- GM Chair and Chief Executive Officer: Mary Barra
- Global Vice President, Buick and GMC: Michael MacPhee
Important: General Motors moved its headquarters from the Renaissance Center to Hudson’s Detroit in January 2026. The old address at 100 Renaissance Center and the former headquarters number, 1-313-556-5000, should no longer be presented as Buick’s current corporate contact information.
Buick does not operate a separate brand headquarters with its own public switchboard. Use GM’s corporate number for corporate and business matters and Buick Customer Assistance for vehicle, dealership, warranty and consumer concerns.
How to Contact Buick Customer Service
Buick Customer Assistance can be reached at 1-800-521-7300.
Current telephone hours are:
- Monday through Saturday: 8:00 a.m.–9:00 p.m. Eastern Time
- Sunday: Closed
Use Buick Customer Assistance for:
- A complaint that was not resolved by a Buick dealer
- A vehicle warranty question
- A recurring repair problem
- A delayed part or repair
- A new-vehicle purchase concern
- A myBuick account or mobile-app problem
- A vehicle-order status question
- A recall or safety question
- A request for help locating the appropriate department
- General feedback about a Buick vehicle or dealership
Buick also offers online chat and a support-request form. The company states that an advisor generally responds to a submitted support request within one business day.
Does Buick Have a Customer-Service Email Address?
Buick does not currently publish a direct general customer-service or corporate-complaints email address for vehicle owners.
Use:
- The official support-request form
- Online chat
- 1-800-521-7300
- The Buick Customer Assistance Center mailing address
Do not rely on an email address found only on an unofficial directory or social-media post.
How to File a Buick Corporate Office Complaint
The best escalation route depends on whether the issue involves a dealership sale, repair, warranty, safety problem, financing account or connected service.
Start With the Buick Dealer
Contact the dealership’s manager when the concern involves:
- A vehicle purchase or trade-in
- A documentation or dealer fee
- Dealer financing or an add-on product
- A service-department interaction
- A repair delay
- A loaner vehicle or transportation promise
- A warranty diagnosis
- A damaged vehicle or part
- A dealership employee or manager
- A refund owed directly by the dealership
Ask to speak with the sales manager, service manager or general manager, depending on the issue.
Most Buick dealerships are independently owned businesses. Buick can document and escalate a dealership complaint, but GM does not directly control every dealer’s pricing, trade-in offer, documentation fee, staffing decision or courtesy-transportation policy.
Open a Buick Customer Assistance Case
Call 1-800-521-7300 when dealer management has not resolved the matter.
Have the following ready:
- The vehicle identification number
- The vehicle year, model and mileage
- The dealership name and location
- The purchase or lease date
- The repair-order numbers
- The dates the vehicle was unavailable
- The names of dealership employees contacted
- Photographs, diagnostic reports and invoices
- The specific resolution requested
Ask for a Buick case number and record the advisor’s name and promised follow-up date.
Escalate to General Motors Headquarters
The GM corporate office may be appropriate when:
- A serious issue remains unresolved after dealer and Buick Customer Assistance contacts
- The concern involves repeated unsuccessful repairs
- A safety complaint has not been acknowledged
- A broader Buick or GM policy is involved
- A legal, regulatory, media, supplier or corporate matter requires written correspondence
- An existing case has received no meaningful follow-up
Written consumer correspondence should generally be mailed to:
Buick Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
Corporate or legal correspondence may be addressed to:
General Motors Company
Attention: Buick Complaint or Appropriate Department
1240 Woodward Avenue
Detroit, MI 48265
Calling GM headquarters does not guarantee direct access to Mary Barra, Michael MacPhee or another executive. A consumer concern may be routed back to Buick Customer Assistance, a regional representative or the dealership involved.
What to Have Before Contacting Buick
Prepare:
- The full vehicle identification number
- The year, model, trim and mileage
- The selling and servicing dealerships
- The purchase or lease agreement
- All repair orders and invoices
- The warranty booklet or protection-plan agreement
- Photographs and videos
- Diagnostic trouble codes
- Recall notices
- The dates and mileage at each repair attempt
- Towing, rental-car and transportation receipts
- Any existing Buick case number
- The specific resolution requested
Do not publish a full VIN, driver’s-license number, financing-account number, insurance-policy number, payment-card details, home address, medical history or private employee information in a public review.
Buick Warranty Complaints and Repair Escalation
Start a warranty complaint with an authorized Buick dealer.
The dealership should:
- Inspect and diagnose the vehicle
- Determine whether the repair is covered
- Create a repair order
- Document parts ordered and work performed
- Explain any warranty denial
If dealer management cannot resolve the warranty concern, Buick’s current warranty page directs owners to its Customer Assistance Center at 1-800-694-6546.
This warranty-escalation number is separate from Buick’s general-assistance number, 1-800-521-7300.
Documenting a Repeated Repair Problem
Keep a timeline showing:
- The first date and mileage when the issue appeared
- Each dealership visit
- The symptoms reported
- The diagnosis
- The parts repaired or replaced
- The days the vehicle was unavailable
- Whether the issue returned
- Every Buick case number
Ask the dealership to put your complete complaint on each repair order, even when the technician cannot duplicate the condition.
Warranty rights, dispute programs and state lemon-law requirements can depend on the vehicle’s age, mileage, repair history and state. Review the warranty booklet for the specific model year and seek qualified legal advice when necessary.
Buick Protection Plan and Tire-and-Wheel Claims
A Buick Protection Plan, Advanced Protection Plan, prepaid-maintenance agreement, GAP waiver or tire-and-wheel contract is separate from the factory limited warranty.
The current Buick Protection Plan claims number is 1-833-959-0104.
Contact the claims administrator before authorizing covered work because some plans require advance approval.
Have:
- The customer agreement
- The contract number
- The vehicle identification number
- The dealership or repair-facility information
- The diagnosis and estimate
- Photographs of tire or wheel damage
Do not assume a dealer’s transportation, Uber or loaner policy is included in the protection agreement. Request the applicable terms in writing.
Buick Roadside Assistance
Buick Roadside Assistance can be reached at 1-800-252-1112.
Advisors are available 24 hours a day, 365 days a year.
Services may include:
- Towing from a legal roadway to the nearest appropriate Buick dealer
- Battery jump-start assistance
- Flat-tire changes using the vehicle’s spare
- Vehicle lockout assistance
- Emergency fuel delivery
Coverage and cost depend on the vehicle, model year, warranty status, OnStar plan and circumstances.
Roadside Assistance can also be requested through:
- The myBuick mobile app
- An eligible vehicle’s infotainment system
- The blue OnStar button
- The OnStar Guardian app when included in the applicable plan
For an immediate emergency or unsafe roadside situation, call 911 rather than waiting for corporate customer service.
OnStar and Buick Connected Services
Call 1-888-4ONSTAR, or 1-888-466-7827, for:
- OnStar plan questions
- Billing and subscription concerns
- Account access
- Automatic Crash Response questions
- Stolen Vehicle Assistance
- Wi-Fi or connected-services problems
- OnStar Guardian app support
- Cancellation or plan changes
Depending on the vehicle and plan, drivers may also request help by pressing the blue OnStar button.
The Buick corporate office does not directly control an individual OnStar billing account.
Buick Recall and Vehicle-Safety Complaints
Check for open recalls by entering the vehicle identification number through:
Recall repairs are generally completed by authorized dealers at no charge when the vehicle and condition qualify.
For a safety complaint involving airbags, brakes, steering, fire, unintended movement, seat belts or another possible defect:
- Seek emergency assistance when needed.
- Preserve photographs, police reports and repair records.
- Contact the insurance company.
- Notify the Buick dealer and Customer Assistance.
- Submit a report to NHTSA.
NHTSA’s vehicle-safety hotline is 1-888-327-4236.
A customer review or Buick case does not replace an official NHTSA safety report.
Airbags That Did Not Deploy
An airbag does not deploy in every collision. Deployment can depend on the impact direction, severity, sensors, occupant position and vehicle design.
Buick Customer Assistance cannot determine from a public comment whether an airbag should have deployed.
Preserve:
- The vehicle before repairs or disposal when reasonably possible
- Crash photographs
- Police and emergency reports
- Insurance inspection information
- Vehicle-event and diagnostic data when professionally obtained
Report the concern to Buick and NHTSA and obtain qualified technical or legal advice when appropriate.
Buick Dealer Sales, Trade-In and Fee Complaints
A Buick dealer generally controls:
- The selling price
- Trade-in offers
- Documentation fees
- Dealer-installed accessories
- Optional protection products
- Financing presentations
- Salesperson and manager conduct
Before signing:
- Review the buyer’s order and retail installment contract.
- Confirm the vehicle price and trade allowance.
- Ask for every fee to be identified.
- Remove unwanted optional products before signing.
- Compare outside financing when appropriate.
- Keep copies of advertisements and written offers.
If the dispute involves deceptive advertising, title problems or state-regulated dealer fees, the state motor-vehicle agency, attorney general or consumer-protection office may have an appropriate complaint process.
GM Financial Payments, Leases and Account Complaints
GM Financial is separate from Buick Customer Assistance.
Call 1-800-284-2271 for:
- Loan and lease payments
- Statements
- Automatic payments
- Due dates
- Payoff information
- Titles and lien releases
- Lease-end questions
- Account access
- Payment extensions or hardship options
- Credit reporting
- A GM Financial complaint
Current support hours are:
- Monday–Friday: 7:00 a.m.–6:00 p.m. Central Time
- Saturday: 9:00 a.m.–1:00 p.m. Central Time
- Sunday: Closed
GM Financial also provides secure account messaging and a formal complaint-submission form.
Buick Customer Assistance and a dealership generally cannot change GM Financial’s payment records, late fees, title processing or credit reporting.
myBuick App and GM Account Support
A GM account and the myBuick mobile app may provide access to:
- Vehicle information
- Service history
- Warranty status
- Remote commands when equipped and subscribed
- Diagnostic information
- Maintenance reminders
- Connected-services settings
- Parts and accessory orders
For login, profile, app or vehicle-linking problems:
- Use Buick’s Support Center.
- Submit an official support request.
- Use online chat.
- Call 1-800-521-7300.
Do not post passwords, verification codes, full VINs or precise vehicle-location information in a public review.
Buick Parts and Accessories Orders
For an online parts or accessories order, use the seller information shown in the order confirmation.
Buick shopping support can be reached at 1-844-847-1118 for issues such as:
- A missing order
- An incorrect part
- A damaged accessory
- Tracking problems
- An order that cannot be located
- A parts or accessories return
Participating sellers are independently owned and may set their own prices and fulfillment terms.
Keep the order number, seller information, vehicle identification details, photographs and shipping records.
Buick Careers and Human Resources
Buick does not publish its consumer Customer Assistance number as a Human Resources line.
Search for Buick and General Motors jobs through the official GM Careers website.
Positions may include:
- Engineering
- Design
- Manufacturing
- Software and information technology
- Marketing and communications
- Finance and purchasing
- Customer experience
- Corporate and administrative roles
- Internships and early-career programs
Dealership employees generally work for the independently owned dealer rather than for Buick or General Motors.
A dealership employee should contact the dealer’s Human Resources or payroll department. A GM employee should use internal GM employee resources.
CorporateOfficeHeadquarters.com cannot access job applications, interview schedules, employee files, payroll records, tax forms, benefits accounts or employment-verification information.
Buick Ownership and Corporate Leadership
Buick is a vehicle brand of General Motors Company.
General Motors’ primary U.S. vehicle brands include:
- Buick
- Chevrolet
- GMC
- Cadillac
Mary Barra is Chair and Chief Executive Officer of General Motors.
Michael MacPhee is Global Vice President of Buick and GMC.
General Motors is publicly traded on the New York Stock Exchange under the symbol GM. Buick is not separately traded and does not have its own stock symbol.
Buick Reviews and Complaints
Visible submissions to CorporateOfficeHeadquarters.com currently include individual experiences involving:
- Airbags reportedly not deploying during a side-impact collision
- A dealership trade-in offer and documentation fee
- A salesperson’s response during vehicle negotiations
- A positive long-term Buick Enclave ownership experience
- A tire and wheel protection claim
- A reported promise of dealership transportation
- Delayed service-department communication
- A serious Buick Envision accident
These are individual reader reports. They do not establish that every Buick vehicle, airbag system, dealership, repair department, warranty administrator or employee produces the same experience.
The lengthy tire-warranty submission contains extensive medical, mental-health, workplace and employee information that is not necessary to explain the customer-service complaint. Public reviews should focus on:
- The dealership and approximate date
- The vehicle and service involved
- The warranty or protection plan
- The promises reportedly made
- The response from the dealership and Buick
- Whether the issue was resolved
Do not publish detailed medical histories, credit scores, full vehicle identification numbers, private employee information, insurance records or unsupported allegations of criminal conduct.
About Buick
Buick is one of the oldest continuously operating American automobile brands and became a foundational part of General Motors.
Buick’s current U.S. vehicle lineup consists of four SUVs and crossovers:
- Buick Envista
- Buick Encore GX
- Buick Envision
- Buick Enclave
Available trims may include Preferred, Sport Touring and Avenir.
Products, prices, features, warranties, incentives and availability can change by model year and market.
Buick Competitors and Related Corporate Office Pages
Consumers comparing premium vehicle brands and corporate complaint routes may also find these pages useful:
- General Motors Corporate Office
- Cadillac Corporate Office
- Lexus Corporate Office
- Acura Corporate Office
Additional Customer-Service Resource
Official Buick and GM Resources
- Official Buick Website
- Buick Contact, Chat and Support Request
- Buick Support Center
- Buick Owner Center
- Buick Warranty and Protection Information
- Buick Roadside Assistance
- Buick Protection Plan Claims
- Current Buick Vehicles
- NHTSA Recall Lookup
- GM Financial Contact Information
- General Motors Leadership
- General Motors Careers
Frequently Asked Questions About Buick Corporate Office
Where is the Buick corporate office?
Buick’s corporate operations route through General Motors’ global headquarters at 1240 Woodward Avenue in Detroit, Michigan.
What is the Buick corporate-office phone number?
General Motors’ current corporate-headquarters number is 1-313-667-1500.
What is the Buick headquarters phone number?
Call 1-313-667-1500 for GM headquarters. For vehicle questions and complaints, call Buick Customer Assistance at 1-800-521-7300.
Is Buick still headquartered at the Renaissance Center?
No. General Motors moved its global headquarters to Hudson’s Detroit in January 2026.
Is 1-313-556-5000 still Buick’s corporate number?
That was associated with GM’s former Renaissance Center headquarters. GM’s current corporate number is 1-313-667-1500.
What is the Buick customer-service phone number?
Buick Customer Assistance can be reached at 1-800-521-7300.
What are Buick customer-service hours?
Telephone support is currently available Monday through Saturday from 8:00 a.m. to 9:00 p.m. Eastern Time. The call center is closed Sunday.
How do I file a Buick corporate complaint?
Start with dealership management. If the matter remains unresolved, call Buick Customer Assistance, request a case number and ask for escalation.
Does Buick have a complaints email address?
Buick does not currently publish a direct general complaint email. Use the official support-request form, online chat, customer-assistance number or postal address.
What is the Buick warranty complaint number?
Buick’s current warranty page lists 1-800-694-6546 for concerns that remain unresolved after contacting dealer management.
What is the Buick Roadside Assistance number?
Call 1-800-252-1112. Roadside advisors are available 24 hours a day.
What is the OnStar phone number?
Call 1-888-466-7827, also written as 1-888-4ONSTAR.
What is the GM Financial customer-service number?
Call 1-800-284-2271 for loan, lease, payment, title and account questions.
How do I report a Buick recall or safety problem?
Check the VIN through Buick’s Owner Center or NHTSA. Report a possible safety defect to NHTSA at 1-888-327-4236.
How do I complain about a Buick dealer?
Contact the dealership’s general manager, then open a case with Buick Customer Assistance. Keep the sales agreement, repair orders, written promises and case number.
Who owns Buick?
Buick is a vehicle brand of General Motors Company.
Who is the CEO of General Motors?
Mary Barra is Chair and Chief Executive Officer of General Motors.
Who leads Buick?
Michael MacPhee is Global Vice President of Buick and GMC.
Does Buick still sell sedans?
Buick’s current U.S. lineup consists of the Envista, Encore GX, Envision and Enclave SUVs and crossovers.
How do I apply for a Buick job?
Search and apply through General Motors’ official careers website. Buick Customer Assistance is not the recruiting or Human Resources department.
Why Trust CorporateOfficeHeadquarters.com?
CorporateOfficeHeadquarters.com has published corporate-office addresses, company phone numbers, complaint information and consumer reviews for many years.
This page distinguishes General Motors headquarters from Buick Customer Assistance, independently owned dealerships, warranty support, protection-plan claims, Roadside Assistance, OnStar, GM Financial, parts support, recalls and careers.
Addresses, phone numbers, leaders, warranty terms, vehicle models and support routes can change. Verify important information through Buick, General Motors, the dealership or the appropriate account provider before mailing documents, authorizing repairs or making a financial or legal decision.
Page Update Note
This Buick corporate-office page was updated to address Buick corporate office, Buick headquarters phone number, Buick headquarters, Buick HQ, Buick corporate-office phone number, Buick customer service, Buick Customer Care and corporate-complaint-email searches.
The update replaced the former Renaissance Center address and 1-313-556-5000 number with General Motors’ new Hudson’s Detroit headquarters information, added current Buick Customer Assistance hours, clarified warranty and dealer escalation, added Roadside Assistance, OnStar, GM Financial and recall contacts, updated Buick leadership and the current SUV lineup, preserved and centered the existing image, and expanded the page with practical complaint and safety guidance.
Last Updated: July 21, 2026
Share Your Experience with Buick
Have you contacted a Buick dealer, Customer Assistance, Roadside Assistance, OnStar, GM Financial or the Buick corporate office? Share a factual review below and include:
- The vehicle model and approximate model year
- The dealership city and state
- The approximate date
- The purchase, repair, warranty, safety or account issue involved
- The support routes you tried
- Whether Buick or the dealership responded
- How the issue was resolved
Do not publish full VINs, credit scores, financing-account numbers, insurance records, medical histories, employee home addresses, passwords or other sensitive personal information.
Disclaimer
CorporateOfficeHeadquarters.com is an independent informational and consumer-review website. It is not affiliated with, endorsed by, authorized by or operated by Buick, General Motors Company, General Motors LLC, GM Financial, OnStar, any Buick dealership, protection-plan administrator, insurer, lender, repair facility or government agency.
CorporateOfficeHeadquarters.com cannot access vehicle orders, repairs, warranty decisions, recall records, OnStar accounts, financing accounts, protection plans, insurance claims, crash data, job applications, employee files or Buick Customer Assistance cases. Nothing on this page is automotive, legal, financial, insurance or safety advice. Company information and policies may change.
