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Concord Hummer Service and Repair

Welcome to the premier Concord Hummer service and repair shop. Randy’s Mobile offers full range of Hummer repairs, services and diagnostics. When Hummer was no longer manufactured, we continued to support Hummer owners. So we are delighted to report that Hummer is coming back – this time as a hybrid pickup. So whether you drive Hummer H2, H3, or have your eyes set on the new Hummer Hybrid pickup – Randy’s Mobile is the one-stop Concord Hummer service and repair destination.

Regular service is key to the longevity of any mechanical device, and Hummers are no different. We highly recommend regular oil service – it not only prolongs engine life, but also gives us opportunity to check hoses, belts, check for oil leaks, and check many subsystems that may need additional maintenance as your Hummer ages.  

Hummers are pretty tough, but they do need regular service. H3 has been known to suffer from rough running engine, leaky valves, and now and then cylinder head failure. Whatever ails your Hummer, bring it to Randy’s Concord repair shop – you will not only be greeted by our friendly staff, but can also anticipate:  

  • Nationally ASE certified mechanics
  • Original Equipment quality parts
  • 24 months / 24,000 miles warranty
  • In most cases, same day service completion
  • Written estimates and clear explanations of what needs to be done

Randy’s Mobile Mechanical Service is a full service Concord auto repair shop. Naturally we also offer a wide range of services, diagnostics, and repairs, including: electrical and/or wiring problems, mechanical and suspension repairs, brake pads replacement, air conditioning system recharge, electrical system repair, alternator testing and replacement, computer diagnostics, tail light replacement, check engine light diagnostics, preventative maintenance inspections, fuel pump repair, 90,000 miles service, EVAP system service and repair, electrical system diagnosis and repair, ignition switch replacement, oil change, air intake cleaning & filter changing, drum and rotor service, CV boot replacement, engine repair, factory scheduled maintenance, battery service, brake fluid exchange, 60,000 miles service, fuel system repair, and wiper blade replacement, to name just a few.

Whatever your Hummer needs, Randy’s Mobile can diagnose and repair its problem. For your convenience you can schedule an appointment online, or simply call us.


For trusted Buick Service and Repair in Concord and across CA, visit Randy’s Mobile Auto Repair. Call us today or use our convenient online form to book your visit.

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RV Repair & Services in Concord and Beyond

Randy’s is fully capable of providing the repairs and service you need for your RV or camper. This includes body work, engine service, and even repairs to the interior of your coach. You can also come to us for routine maintenance and tune-ups before a long trip. If your situation requires you to file a claim with your insurance company, our repair experts can help.

If you own an RV that needs repair, come on down as well. We have fully trained RV repair specialists, that will help you with any problems that you are having.

We are well-informed on how to deal with insurance companies. Our employees are also experts in fiberglass repairs for your RV or camper, which is important for your RV's function and your own safety!

To learn more about Randy’s RV Repair division and its services, contact us at 925-288-0766. Our repair facility is located in Concord, CA but provides services to customers from all over the surrounding areas.

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