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General Inquiries. Find contact information for GM brands.
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GM Financial Information. GM Financial is the full service...
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Customer Relations Center Details: 1-800-462-8782. Monday - Saturday: 8 a.m. to 9 p.m. (EST) Sunday: Closed. GMC Online Owner Center: (for questions about managing your vehicle on GMC.com) 1-866-694-6546.
If you need assistance with the Service Information (SI) application (including the Labor Time Guide), contact the Techline Customer Support Center (TCSC): United States. 1-888-337-1010 prompt 3 1-248-265-9327 (Fax) Or visit the Techline web site at http://techline.gm.com.
Contact GM Parts for additional information about auto parts, locating service, warranties, current offers, training programs, and more. Reach out today.
Contact Us. Learn how the GM dealership supports your vehicle services needs like how to schedule service and roadside assistance.
Dealership Service. Select a preferred dealer, schedule service, and get information on service offers, roadside assistance, parts and tires.
General assistance. For questions about your Buick vehicle, new vehicles or My Account information: 1-800-521-7300. For the hearing and speech impaired, please call our Telecommunication Relay service at 711 for assistance. Monday–Saturday: 8 a.m. to 9 p.m. (EST) Sunday: Closed. For help with adaptive equipment for persons with disabilities: