Hummer Repair in La Habra, CA

ASE-Certified Master Technician | O.C. Automotive and Diagnostics

ASE-Certified

Master Technician

Professional Standards | O.C. Automotive and Diagnostics

Professional Standards

Digital Workflow | O.C. Automotive and Diagnostics

Digital
Workflow

Customer Service | O.C. Automotive and Diagnostics

Customer
Service

Flexible Financing Options | O.C. Automotive and Diagnostics

Flexible Financing Options

Warranty Protection | O.C. Automotive and Diagnostics

Warranty Protection

Hummer Issues?

Service and Repair of HUMMER Vehicles

O.C. Automotive and Diagnostics in La Habra, CA has a team of specialists dedicated to Hummer vehicles. Marketed by GM from 1999 through 2010, Hummer vehicles are no longer being made, but they remain versatile recreational vehicles that combine size, status, and immediate recognition into one huge package. Whoever said that good things come in small packages never took the Hummer into consideration. The civilian version of the military Humvee, Hummers can be used on or off road in nearly any environment. Each Hummer is as unique as its owner. A vehicle this individualized needs specialized care and maintenance.

Off-roading can cause a lot of wear and tear on a vehicle—even if that’s what a vehicle like the HUMMER is designed for. Excellent service and routine maintenance will keep your HUMMER reliable through all terrain. At our shop, we offer individualized high-quality service to keep your Hummer in optimum condition. Whether you drive an H1, H2, or H3, we are qualified to meet all of your automobile’s needs. From major repairs to routine services, our expert technicians stand ready to offer nothing less than the best in customer and car care.

Unlike other shops, we don’t just focus on the vehicle. From the moment you enter our door until you drive away completely satisfied, we strive to offer an excellent customer service experience.

Our certified technicians are always happy to answer any of your questions, and we work hard to get you back on the road (or off-roading) as quickly as possible!

Give yourself and your Hummer the service you deserve—Call our shop or stop in to schedule an appointment today!

First Time Here?

The O.C. Automotive and Diagnostics Experience

Reviews Icon | O.C. Automotive and Diagnostics

5-star review by Michael Martin

"I took my GMC Acadia limited for a/c service. The guys in the shop did a diagnostic on the system, called same day an said what was going on, they had the parts in stock and was able to fix same day and return my Acadia to me. Very personable, very knowledgeable, and the best thing very efficient. The warranty on parts that they offer on there work is great too."
Reviews Icon | O.C. Automotive and Diagnostics

5-star review by Ron Prendiz

"Jose at the front counter provided the best customer service and was absolutely very cordial and professional. The interaction I had with the techs was also very genial. I was given a checklist of issues that I was already aware of and I will definitely return to O.C. Automotive and Diagnostics to remedy these minor concerns."
Reviews Icon | O.C. Automotive and Diagnostics

5-star review by Alexa Miller

"Anthony and his team are the best! I mainly communicated with Jose who was so helpful, kind, and communicative. When my car’s diagnostic was ready, Anthony took the time to explain the results and walk me through my options and his recommendations. I so appreciate the time and effort from the whole team. I’ve been coming here for years and cannot recommend them enough!"

5-star review by Sandra Horton

"Jose provided exceptional customer service by going above and beyond which was  truly appreciated.  My car was finished same day as promised.  Thank you Anthony!"

5-star review by Ruben Lopez

"Amazing customer service from the start to the finish. For years I was having an electrical problem with my RV. I took it to O.C. Automotive Diagnostics and they replaced the battery and the alternator. 2-weeks later, My coach would not start and it was parked at my house. I called Gabriel and he was able to send Anthony and one of his mechanics to my house to check out the problem. with in 1/2 an hour, they found the problem and fixed it. Amazing communication and customer service. I highly recommend them!"

5-star review by Michael Martin

"I took my GMC Acadia limited for a/c service. The guys in the shop did a diagnostic on the system, called same day an said what was going on, they had the parts in stock and was able to fix same day and return my Acadia to me. Very personable, very knowledgeable, and the best thing very efficient. The warranty on parts that they offer on there work is great too."

5-star review by Ron Prendiz

"Jose at the front counter provided the best customer service and was absolutely very cordial and professional. The interaction I had with the techs was also very genial. I was given a checklist of issues that I was already aware of and I will definitely return to O.C. Automotive and Diagnostics to remedy these minor concerns."
Reviews Icon | O.C. Automotive and Diagnostics

5-star review by Michael Martin

"I took my GMC Acadia limited for a/c service. The guys in the shop did a diagnostic on the system, called same day an said what was going on, they had the parts in stock and was able to fix same day and return my Acadia to me. Very personable, very knowledgeable, and the best thing very efficient. The warranty on parts that they offer on there work is great too."
Reviews Icon | O.C. Automotive and Diagnostics

5-star review by Ron Prendiz

"Jose at the front counter provided the best customer service and was absolutely very cordial and professional. The interaction I had with the techs was also very genial. I was given a checklist of issues that I was already aware of and I will definitely return to O.C. Automotive and Diagnostics to remedy these minor concerns."
Reviews Icon | O.C. Automotive and Diagnostics

5-star review by Alexa Miller

"Anthony and his team are the best! I mainly communicated with Jose who was so helpful, kind, and communicative. When my car’s diagnostic was ready, Anthony took the time to explain the results and walk me through my options and his recommendations. I so appreciate the time and effort from the whole team. I’ve been coming here for years and cannot recommend them enough!"

5-star review by Sandra Horton

"Jose provided exceptional customer service by going above and beyond which was  truly appreciated.  My car was finished same day as promised.  Thank you Anthony!"

5-star review by Ruben Lopez

"Amazing customer service from the start to the finish. For years I was having an electrical problem with my RV. I took it to O.C. Automotive Diagnostics and they replaced the battery and the alternator. 2-weeks later, My coach would not start and it was parked at my house. I called Gabriel and he was able to send Anthony and one of his mechanics to my house to check out the problem. with in 1/2 an hour, they found the problem and fixed it. Amazing communication and customer service. I highly recommend them!"

5-star review by Michael Martin

"I took my GMC Acadia limited for a/c service. The guys in the shop did a diagnostic on the system, called same day an said what was going on, they had the parts in stock and was able to fix same day and return my Acadia to me. Very personable, very knowledgeable, and the best thing very efficient. The warranty on parts that they offer on there work is great too."

5-star review by Ron Prendiz

"Jose at the front counter provided the best customer service and was absolutely very cordial and professional. The interaction I had with the techs was also very genial. I was given a checklist of issues that I was already aware of and I will definitely return to O.C. Automotive and Diagnostics to remedy these minor concerns."

Looking for a local shop?

Areas We Service

Serving La Habra, CA & Surrounding Towns – Hummer Repairs You Can Count On

Conveniently located in La Habra, CA, O.C. Automotive and Diagnostics provides dependable automotive repair and diagnostic services for drivers throughout the surrounding communities. With an ASE Certified Master Technician and a team committed to staying current with automotive technology, the shop is equipped to service all makes and models.


Customers from La Habra and nearby cities can turn to O.C. Automotive and Diagnostics for professional vehicle maintenance, diagnostics, and repairs. Its convenient location makes quality automotive care accessible to drivers throughout Orange County and neighboring communities in Los Angeles County.

  • La Habra
  • Fullerton
  • Brea
  • La Mirada
  • Whittier
  • Hacienda Heights
  • Rowland Heights
  • La Habra Heights
  • Buena Park
  • La Palma
  • Cerritos
  • Norwalk
  • Cypress
  • Placentia
  • Yorba Linda
  • Anaheim
  • Orange
  • Santa Fe Springs
  • Pico Rivera
  • Diamond Bar
  • Walnut
  • Chino Hills
  • Industry
  • West Covina