Tustin HUMMER H1 Service Center

Looking for a certified Technician to work on your Hummer H1 near Orange County?

If you need Hummer repair or maintenance, you should know that Tustin has the #1 HUMMER H1 service center on the West Coast and has your back. We are also proud to say that Tustin HUMMER is the home of World Class Technician. Our expert car mechanics are committed to doing superior repair work on all HUMMERs and GM vehicles.


Our Hummer H1 Service center is open 6-days a week and is situated at 1 Auto Center Drive in Tustin, so you never have to wait long or drive far to get your Hummer in for an appointment. Pick up the phone and call (714) 515-3847 to speak to one of our associates or use the online scheduler to select a date and time that works for you.

Call Today to Speak to Mike Sabbarse; our Expert Hummer Technician, at 714-515-3847.

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Tustin Buick GMC is actively involved in creating a stronger community. We're proud of the many partnerships we have with local charities and organizations to help our community thrive. From annual awareness campaigns in partnership with Buick and GMC, to local efforts around the holidays, we strive to make a difference! 


  • 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
  • Sunday 10:00 am - 8:00 pm