Your vehicle’s battery provides the initial charge needed to start your engine. Once your vehicle’s engine is running, the alternator kicks in to power the electrical system, which includes the radio, lights, heater, air-con, infotainment system, horn, and more. Having issues with any of your vehicle’s electrical accessories can indicate that you may have to replace the battery or you need to test and/or repair your alternator.
Symptoms to look out for:
Do you believe you may have problems with your battery, alternator, or electrical system?
If you do, the GM Certified Service experts at Roy Foss Thornhill can diagnose and repair electrical systems, replace your vehicle’s battery, test and repair alternators, and plenty more.
Early Bird Special! Save $10 off tire storage when you book an appointment to swap tires before March 31’st.
Early Bird Special! Save $10 off tire storage when you book an appointment to swap tires before March 31’st.
For the months of February and March, schedule an appointment with Certified Service using our Online Service Scheduling tool and you can get 3 months of OnStar Remote Access or SiriusXM at no charge! If you’re already on a paid plan or your vehicle is not equipped to support these services, you can still get 3 months of SiriusXM streaming online or with any connected device using the SXM app.
91Offer valid from February 1- March 31, 2023 at participating Chevrolet, Buick, GMC, and Cadillac Certified Service dealerships. Customers who book their service appointment online through the Certified Service online service scheduling tool are eligible to receive 3 months of OnStar Remote Access and/or 3 months of SiriusXM. Offer may not be combined with select Dealer-specific incentives or promotions. GM Canada reserves the right to cancel, modify or amend the offer without notice. See dealer for details and for any issues with claiming your no-charge subscriptions, contact [email protected]
For SiriusXM: Eligible customers will receive a free trial to SiriusXM. Your service will automatically stop at the end of your trial subscription. If you do not wish to enjoy your trial subscription or if you do not agree to our Customer Agreement, you can cancel it by calling the number below. If you decide to continue service after your trial, the subscription plan you choose will automatically continue and you will be charged according to your chosen payment plan and method at then-current regular prices as long as you choose to remain a subscriber. To cancel, call us at 1-888-539-7474. Satellite and streaming lineups vary slightly. Subscriptions to SiriusXM Canada are subject to our Customer Agreement available at siriusxm.ca/terms. We collect and use personal information according to our Privacy Policy available at siriusxm.ca/privacy. © 2023 Sirius XM Canada Inc. “SiriusXM”, the SiriusXM logo, channel names and logos are trademarks of Sirius XM Radio Inc. and are used under license. All other trademarks, service marks, images and logos are property of their respective owners and are displayed in this publication with permission. All rights reserved
For OnStar: Offer valid from February 1 – March 31, 2023 at participating Chevrolet, Buick, GMC, and Cadillac Certified Service dealerships. Eligible customers will receive 3 months of OnStar Remote Access. Cannot be added to existing OnStar plans. Offers available only on GM vehicles when properly equipped. Offer available to retail customers only. See dealer for details and for any issues with claiming your no-charge subscriptions, contact [email protected]
For the months of February and March, schedule an appointment with Certified Service using our Online Service Scheduling tool and you can get 3 months of OnStar Remote Access or SiriusXM at no charge! If you’re already on a paid plan or your vehicle is not equipped to support these services, you can still get 3 months of SiriusXM streaming online or with any connected device using the SXM app.
Senior’s Day offer applies to customers who are aged 65+ and is applicable on all vehicle repairs and maintenance items. All offers cannot be used on past purchases, cannot be redeemed for cash, and may not be combined with certain other offers. Please see Roy Foss for all offer details.
Purchase a set of four (4) in-stock tires from Roy Foss and you will receive Complimentary Foss Lifetime Tire Repair!†
Complimentary Foss Lifetime Tire Repair offer is only applicable when purchasing four (4) in-stock tires from Roy Foss; rims, sensors, and installation not included. Foss Lifetime Tire Repair offer is only applicable on tire repairs for the purchased tires only and does not include rim damage or rim or tire pressure sensor replacement. Foss Lifetime Tire Repair offer is applicable on repairs involving installation of a tire plug/patch repair ONLY. It does not include tire replacement due to unrepairable tires (tread depth less than 2/32”, sidewall damage, damaged from mechanical failure, collision, off-road use, etc). Maximum claim is $49.95 before tax. Repairs must be completed at Roy Foss.
Purchase a set of four (4) in-stock tires from Roy Foss and you will receive Complimentary Foss Lifetime Tire Repair!†