How to Contact GM Customer Service

General Motors (G.M.), General Motors Company in its entirety, is originally General Motors Corporation, the American company that was the world’s largest motor vehicle producer for most of the 20th and early 21st centuries. 


It operates production and assembly plants and distribution centers in the United States, Canada, and several other countries in the United States. Automobiles and trucks, vehicle parts, and engines are the company’s main products, and it is also active in financial services. The headquarters for G.M. is in Detroit. 

For generations of drivers, riders, and workers worldwide, General Motors inspires enthusiasm and loyalty. This has resulted in a unique brand identity that reflects its tradition of imagination, honesty, resourcefulness, and determination. Here’s your simple guide in reaching out to this company through their customer service. 

How to Contact GM Customer Service
Image Source: General Motors Website

About G.M.

The history of General Motors (G.M.), one of the largest manufacturers of vehicles and trucks globally, goes back more than a century and covers a wide variety of industrial operations around the world, primarily focused on motorized transport and the engineering and manufacturing that make it possible. 

Established as a holding company in Flint, Michigan, in 1908, it employed around 209,000 people worldwide as of 2012. 

General Motors produces cars and trucks in 35 countries with its global headquarters at the Renaissance Center in Detroit, Michigan, United States. 8.35 million G.M. cars and trucks were sold globally under different brands in 2008. 

Buick, Cadillac, Chevrolet, GMC, Holden, and Wuling are the current car brands. La Salle, McLaughlin, Oakland, Oldsmobile, Opel, Pontiac, Hummer, Saab, Saturn, Vauxhall, and Daewoo are former G.M. automotive brands.

G.M. Vision and Mission 

Innovation at General Motors is their northern star. G.M. has always pushed the boundaries of design as the first automobile company to mass-produce an affordable electric vehicle and the first to build an electric starter and airbags. 

G.M. is the first company to manufacture self-driving vehicles on a wide scale with a fully integrated solution. They are committed to an all-electric future. Drivers of five G.M. electric models, including the Chevrolet Bolt EV, have powered 2.6 billion E.V. miles. 

Their sustainability depends on responsible earth management, and we are actively finding new and groundbreaking environmental solutions. Their strategies and technology foster a cleaner world from the supply chain to the cars we bring on the road to manufacturing.

Vehicle Help 

You may reach out to G.M. if you need anything related to vehicle features, warranty, options, and accessories.

They are open Monday–Saturday, 8 a.m. to 9 p.m. (EST). However, they are closed on Sundays. 

Customer Assistance 

For customers living in the United States, you can reach out to G.M. Customer Assistance Center by mailing them at P.O. Box 33170, Detroit, MI 48232-5172. 

You can mail them in Canada at 1908 Colonel Sam, Oshawa, Ontario, L1H 8P7, Canada (Mail Code 163-005). 

OnStar Connected Services 

If you need assistance with remote commands, real-time vehicle health, Automatic Crash Response, and emergency services, you may use the number 1-888-4-ONSTAR (1-888-466-7827)

If you have a hard time hearing or speech impaired, call their toll-free TTY number: 1-877-248-2080.

G.M. Rewards

If you have questions about the program, which may include how to view, earn, and redeem points, you may use the number 1-844-764-2665 (Monday through Saturday, from 9 a.m. to 8 p.m. EST). 

Owner Assistance per Car Brand

You may contact G.M.’s per car brand customer service. Use the following numbers.

  • Chevrolet: 800-222-1020, 877-558-8352
  • Buick: Fill out this form, and they will provide you the number.
  • GMC: 1-800-462-8782, 1-800-323-9935 (for People with Disabilities), 1-800-284-2271 (for Financing)
  • Cadillac
    • Inside the U.S.: 1-800-333-4223
    • Inside Canada: 1-888-446-2000
    • International Inquiries: 1-905-644-4112
  • ON: 1.888.4ONSTAR (1.888.466.7827)
How to Contact GM Customer Service
Image Source: Detroit Free Press


G.M. envision a future of zero crashes, no emissions, and no congestion. If you have any concerns, questions, partnerships in mind, don’t hesitate to use these tips to call their customer service.