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GM Certified Service in Thornhill, ON


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Price Match Guarantee legal: 4 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. GM Card Tire legal: 47 Eligible Cardholders of a Scotiabank® GM Visa® Card are eligible for $100 instant discount on select tires purchased at participating Chevrolet, Buick, GMC and Cadillac dealerships in Canada, up to a maximum of two (2) sets of tires per eligible VIN, per eligible Cardholder, for the promotional period. Offer is valid from September 1st , 2020 to November 30th only on eligible tire purchases charged to the Cardholders Scotiabank® GM Visa® Card account. Offer is not stackable with the 10% discount Scotiabank® GM Visa® Card program on parts and service. Only GM National Account tires with a GM Part Number are eligible for the offer. This offer is stackable with the instant tire manufacturer rebates. This offer may not be redeemed for cash and may not be combined with certain other consumer incentives available on Chevrolet, Buick, GMC and Cadillac vehicles and/or their associated parts. Conditions and limitations apply, see your participating dealer for details. This offer is non-transferable. This offer may be changed, cancelled or extended at any time without notice. The Bank of Nova Scotia is not responsible for any products or services purchased at GM Canada dealerships under this offer. Dealer may sell for less. Instant tire manufacturer rebate legal: *Instant tire manufacturer rebates are available when you purchase 4 identical eligible tires. Rebates can be combined with Scotiabank® GM Visa® Card $100 instant rebate but cannot be combined with tire manufacturer mail-in rebates. Instant rebates available: Up to $70 from BFGoodrich, $70 from Michelin, $60 Pirelli, $55 from Continental, $50 from Bridgestone, $50 from Goodyear, $50 from Dunlop, $40 from Firestone, $30 from General tire, $40 from Uniroyal, and $40 Kumho Tire. Offer valid from September 1st, 2020 to November 30, 2020. Maximum 2 sets (8 tires) per VIN. This offer is non-transferable. Conditions and limitations apply, see participating dealers for details. No rain checks available. This offer may be changed, cancelled or extended at any time without notice.
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Roy Foss Thornhill Auto Repair & Service


For any Cadillac, Buick, GMC, and Chevrolet service needs in Thornhill, bring your vehicle to our dealership. Our factory-trained technicians are equipped to handle it all, from basic maintenance to intensive repair. If you have any questions, then visit our Thornhill Chevrolet, Buick, GMC, and Cadillac service department for more details. When you visit Roy Foss Thornhill, you can be sure that your vehicles are being worked on by GM-certified service experts. Feel free to give us a call to schedule an appointment anytime. Let our dealership take care of your Chevrolet, Buick, GMC, and Cadillac service needs in Thornhill today! We work hard to ensure that your vehicle is back on the road as good as new. This is what makes our Thornhill, Chevrolet, Buick, GMC, and Cadillac service department the go-to source for any kind of maintenance work. For any additional information, call us at (888) 357-0382.

Service Info

Phone Number:Service Hours:
  • Mon - Fri8:00 AM - 5:00 PM
  • Sat - SunClosed
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Roy Foss Thornhill is located at: 7200 Yonge Street • Thornhill, ON L4J 1V8
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Contact Us

(888) 630-4944

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7200 Yonge Street • Thornhill, ON L4J 1V8

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Today's Hours:

Open Today! Sales: 9am-6pm

Open Today! Service: 8am-5pm

Open Today! Parts: 8am-5pm

Roy Foss Thornhill 43.802789, -79.422113.