89When you purchase an Oil Change and Vehicle Health Check between June 1, 2021 and July 31, 2021, receive a $0.08/L for 250 litres Esso and Mobil digital fuel discount card – valued at $20, at no charge. Oil Change and Vehicle Health Check service must be completed between June 1, 2021, and July 31, 2021. Express vehicle health check service not eligible for offer. Maximum 1 no-charge $0.08/L for 250 litres Esso and Mobil digital fuel discount card per VIN during the offer period. $0.08/L Esso and Mobil digital fuel discount card must be claimed through online submission which must be completed between June 1, 2021 and August 13, 2021 to be eligible for this offer. Digital fuel discount card will be e-mailed within 10 business days of successful claim submission and verification. Offer available to retail customers only. Offer subject to change without notice and may not be combined with certain other available incentives. Valid at participating dealers in Ontario, Quebec, Nova Scotia, New Brunswick, Newfoundland, and Prince Edward Island. Ask your participating dealer for complete details. Offer valid from June 1 and July 31, 2021, or while supplies last. Esso is a trademark of Imperial Oil Limited. Imperial Oil, licensee. Mobil and Speedpass+ are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries. Imperial Oil, licensee. For terms and conditions, visit For terms and conditions applicable to the $0.08/L for 250 litre Esso and Mobil digital fuel discount card, visit
*Customers who purchase Accessory Catalogue Option (ACO) GM Accessories totaling $500+ (excluding taxes and labour) are eligible to receive an instant rebate (“Accessory Consumer Bonus”) of $100 (after taxes) towards their purchase. The value of the Accessory Consumer Bonus will be based on the total retail purchase price, before taxes and labour, paid by the customer. Only select ACO GM Crossover SUV Accessories for the following models are eligible: Buick Enclave, Buick Encore, Buick Encore GX, Buick Envision, Chevrolet Blazer, Chevrolet Equinox, Chevrolet Trailblazer, Chevrolet Traverse, Chevrolet Trax, Chevrolet Bolt EV, GMC Acadia, GMC Terrain, Cadillac XT4, Cadillac XT5, Cadillac XT6 purchased from June 1 to June 30, 2021 from an authorized participating GM dealer in Canada are eligible; Limited Personalization Option accessories are not eligible. Limit of one (1) Accessory Consumer Bonus per person. Offer cannot be combined with any other accessories consumer offer. Additional conditions and limitations apply. See participating dealer for details.
PR11131 GM June Accessories_1800 x 760
SIERRA TOTAL VALUE: Offer available to qualified retail customers in Ontario for vehicles purchased and delivered between June 1, 2021 to June 30, 2021. Up to $10,000 Total Value on cash purchases; includes Cash Delivery Allowance of $2,000 (Tax Exclusive), $7,250 Non-Stackable Cash Delivery Allowance (Tax Exclusive), $750 Bonus Cash (Tax Exclusive); applies to cash purchases of new 2021 Sierra 1500 Crew Cab Elevation models at participating dealers in Canada. $50,837 cash purchase price includes freight ($1,900), air conditioning charge ($100) but excludes license, insurance, registration, dealer fees and taxes. By selecting lease or finance offers, consumers are foregoing this $7,250 credit which will result in higher effective interest rates. Dealer may sell for less. Offer may not be combined with certain other consumer incentives. Factory order may be required. General Motors of Canada Company may modify, extend or terminate this offer, in whole or in part, at any time without notice. See dealer for details. Chargeable paint costs may vary depending on the vehicle/colour. Please see dealer for details.

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Google Jun 22, 2021

Great service and price

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Google Jun 21, 2021

Very good customer service, they came in and the day off to give us our vehicle and helped my wife surprise me

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Five starrrr customer service. The shop is fast, efficient, friendly.

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Google Jun 7, 2021

Had an amazing experience at Roy Foss Thornhill. Thanks to William. He is very nice, give me honest suggestions, give me very detail explanations. I am very happy with your service for repairing my tire. It was great customer service. Thanks to William and Roy Foss Thornhill.

Welcome to Roy Foss Thornhill

Chevrolet Buick GMC Dealer in Thornhill, ON

Roy Foss Thornhill is Thornhill‘s premier Chevrolet Buick GMC Dealership with a long-standing tradition of excellence since 1962. Our world-class facility offers sales and financing of new, used and certified pre-owned vehicles as well GM Certified Service. We provide our valued customers an experience that not only meets but exceeds their expectations, time and time again. Whether you’re shopping for your next vehicle, or are in need of scheduled maintenance or repairs, we can help! Roy Foss Thornhill is conveniently located in the GTA near North York and Markham. Visit Roy Foss Thornhill today, our team looks forward to serving you!

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7200 Yonge Street Thornhill, ON L4J 1V8

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7200 Yonge Street • Thornhill, ON L4J 1V8

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Open Today! Sales: 9am-6pm

Open Today! Service: 7:30am-6pm

Open Today! Parts: 8am-5pm

Roy Foss Thornhill 43.802789, -79.422113.