STG Auto Service In Ontario, Montclair, Bellflower & Garden Grove, CA

Our Auto Service

Professional Service Team

Everyone deserves automotive service that they can trust. If you're looking to schedule service in Ontario, Garden Grove, or Montclair, CA, now is the time. We make it easy for those who need access to premium car care to get it through our dealers. You need to keep that used car of yours in tip-top shape and we want to help you do that with our services. Contact our service department to learn more about the various offerings at STG Auto Group.

Schedule Automotive Service Today

Need assistance? Get in touch! Our team of experts will gladly get your car on the road to recovery with the help of our services.

Listed below are some of the many types of services we offer to our customers. Sorry, we cannot provide pricing due to the hundreds of different makes and models for which we offer service. If you would like an estimate, please call us at (855) 965-2166. We would be pleased to provide you with an estimate over the phone.

  • Oil Change
  • Tire Mounting, Rotation and Balance
  • Transmission Service
  • 30K, 60K, 90K Service
  • Engine Diagnostic (Check engine light, fluid light, service light, etc)
  • Brake System (Pads, rotor, lines, etc)
  • Heating/Cooling Systems
  • Head Gasket/Valves
  • Exhaust Systems
  • Electronic Motors (Windows, fan, etc.)
  • Engine Replacement or Rebuild
  • Fuel Systems (Filters, hoses, pumps, etc)
  • Steering Systems
  • Belts (Timing, alternator, etc)
  • Electrical Systems
  • Ignition System
  • Emission Control System
  • Suspension System (Axle, mounts struts, etc)
  • Clutch Repair/replacement
  • Warranty Repairs
Dealer Information
STG Auto Group Ontario, Montclair & Garden Grove, CA Get Directions
STG Montclair: (909) 341-1189

STG Ontario: (909) 344-5390

STG Garden Grove: (714) 886-6646
STG Bellflower: (562) 262-9051
Sunday:
9:00 AM - 9:00 PM
Monday:
9:00 AM - 9:00 PM
Tuesday:
9:00 AM - 9:00 PM
Wednesday:
9:00 AM - 9:00 PM
Thursday:
9:00 AM - 9:00 PM
Friday:
9:00 AM - 9:00 PM
Saturday:
9:00 AM - 9:00 PM
STG Montclair/Ontario: (909) 344-5513

STG Garden Grove: (714) 947-2842
STG Bellflower: (562) 262-9151
Sunday:
CLOSED
Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM
Saturday:
8:00 AM - 5:00 PM
STG Montclair/Ontario: (909) 344-5513

STG Garden Grove: (714) 947-2842
STG Bellflower: (562) 262-9151
Sunday:
CLOSED
Monday:
9:00 AM - 6:00 PM
Tuesday:
9:00 AM - 6:00 PM
Wednesday:
9:00 AM - 6:00 PM
Thursday:
9:00 AM - 6:00 PM
Friday:
9:00 AM - 6:00 PM
Saturday:
9:00 AM - 5:00 PM
Phone: