Certified Service

Whether it’s routine maintenance or a complex repair, you’ve come to the right place. Our Certified Service technicians are the only experts factory-trained to know your vehicle inside and out. With Genuine GM Parts and specialty equipment, you have the added peace of mind that comes with demanding the very best.

Our Services

With thousands of hours of training each year, our Certified Service technicians are equipped and prepared to address any concern you may have about your vehicle. Using clear, easy-to-understand terminology, your Service Consultant will walk you through the recommended service for your vehicle. That way you know exactly what’s going on with your vehicle, allowing you to make informed decisions.

Oil Change

Oil Change

Today’s smaller, technologically-advanced engines require proper lubrication to maintain maximum fuel efficiency, reduce wear, and to improve overall engine performance. More than ever it’s important to bring your vehicle to the people who know it best.

Tires

Tires

At Certified Service, you can trust that you’ll always get the right tires for your vehicle. We’re always surveying deals to make sure you get major brand name tires at the best price possible. If you find a better deal within 30 days of purchase, we’ll refund the difference. Guaranteed.*

Service. Simplified.

We value your time, so we make it easy to schedule any service your vehicle may need. Simply click the Schedule Service button.

Other Scheduling Tools

TIRE 30-DAY PRICE MATCH GUARANTEE: Your local dealer will match the competition’s prices. If you purchase one of the aftermarket tire brands listed below and later find a better price on a qualifying brand within 30 days of the purchase, we’ll refund the difference. Tire Brands : BFGOODRICH, BRIDGESTONE, CONTINENTAL, DUNLOP, FIRESTONE, GENERAL, GOODYEAR, HANKOOK, KELLY, MICHELIN, PIRELLI, UNIROYAL, KUMHO. The price match applies to the brands listed above. Tire brands not carried by your dealer will not be guaranteed for a price match. Competitive Prices : The competitive price you find must be in a valid ad, written estimate or Internet quote for identical, new tires. The tires must be an exact match in brand, tire line, size, load rating and speed rating to be eligible for the price match guarantee. All competitive quotes (including internet quotes) must come from a local competing tire retailer and installer (with a physical location within 100km of your participating GM retailer. The competitive price must be valid within 30 days of your purchase of any of the tire brands listed above. Service and Installation : The price match guarantee is only valid on the tire price and does not include installation/labour. Offer available to retail customers only at participating Canadian Chevrolet, Buick, GMC and Cadillac dealers. Offer valid from January 1, 2020 to December 31, 2020. GM Canada reserves the right to cancel, modify or amend the offer without notice. Conditions and limitations apply. May not be combined with other offers and programs.
1 Available on select Apple and Android devices. Service availability, features and functionality are subject to limitations and vary by model and/or vehicle configuration, device and the plan in which you are enrolled. Device data connection required. Visit onstar.ca for more details.
2 Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a trademark of Apple Inc., registered in the U.S. and other countries.
3 Google, Google Assistant, Android, Google Play, Android Auto and other related marks and logos are trademarks of Google LLC. Use of these trademarks is subject to Google Permissions.
4 App functionality and feature availability vary with vehicle equipment and trim level.  Data connection may be required and data charges may apply. Requires an active service plan and working electrical system. Terms and limitations apply. Visit onstar.ca for more details.
5 Capabilities vary by model and/or vehicle configuration and service plan, may require the purchase of factory installed equipment and/or may not be available on select models. Visit onstar.ca for vehicle availability. Message and data rates may apply. Requires active service, email address on file and enrollment in Vehicle Diagnostics. Not all issues will deliver alerts. On-Demand Diagnostics requires a paid service plan.
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Contact Us

(905) 436 1500

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240 Bond Street East • Oshawa, ON L1G 1B5

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Today's Hours:

Open Today! Sales: 9am-6pm

Open Today! Service: 8am-5pm

Open Today! Parts: 8am-5pm

Main: (905) 436 1500

Service: (905) 432 7333

Parts: (905) 723 8105

Collision Center: (905) 723 2953

Open Today! Parts: 8am-5pm

Open Today! Collision: 8am-5pm

Mills Motors Buick GMC 43.9013761, -78.8554195.