Hummer Repair and Service in Castro Valley, CA at Mallard Auto Care
At Mallard Auto Care , we pride ourselves on providing top-tier Hummer service and repair in Castro Valley. Our nationally ASE-certified master technicians have the expertise to handle everything from routine oil changes to advanced diagnostics and complex repairs. Whether your Hummer needs manufacturer-recommended maintenance or repairs to its electrical system, we’re here to help you keep your ultimate off-road vehicle running smoothly.
We specialize in Hummer models, including the H3, known for certain engine issues like rough running and leaking valves. If your Hummer isn’t performing at its best, we’ll diagnose the problem and walk you through your best repair options, with a commitment to transparency and integrity. Our goal is to maximize your transportation dollar while offering quality service you can trust.
Mallard Auto Care, the premier Castro Valley Hummer service and repair shop invites you to bring your Hummer to us – we are a full service Castro Valley auto repair shop that can perform oil changes, manufacturer recommended maintenance, electrical system work, advanced diagnostics and repairs. Our nationally ASE certified master technicians can repair your Hummer and get you back on the road.
The ultimate off-road vehicle - Hummer was originally designed for military use – it still requires regular maintenance. We recommend following manufacturer recommended maintenance schedule, with regular oil changes being a must. While we perform an oil change, we also inspect belts, hoses, tires, and other systems on your Hummer – this gives us an opportunity to identify and fix problems before they result in breakdowns or major repairs.
At Mallard Auto Care in Castro Valley, we would be happy to service your Hummer, and you will not only be greeted by our friendly staff, but can also expect:
- Electronic inspection with pictures, emailed to you
- Written estimates
- ASE certified technicians working on your vehicle
- We use Original Equipment quality parts
- We provide 36 months / 36,000 miles nationwide warranty
- For your convenience, we offer local shuttle
Mallard Auto Care works with most Extended Warranties - we can work with most major extended warranty contracts – we initiate claims, deal with adjustors, handle the paperwork, and arrange payments – we do it, so you can go about your day.
We strive to partner with you to
"Maximize Your Transportation Dollar"
Mallard Auto Care can perform professional checkup and diagnostics, should you have any concerns about your Hummer. Some problems may be serious - H3 is known to have problems with engine running rough, occasionally with leaking valves, and sporadic cylinder head failures. If you think your Hummer is not 100% healthy - bring your vehicle to Mallard Auto Care, we will diagnose the problem and help you decide on the best course of action. We will not sugarcoat it – we will tell you what we see, and what your options are.
In addition to major repairs, we, of course, perform routine Hummer maintenance, service and repairs, including: brake pad replacement, brake repair, AC recharge, struts, transmission problems, suspension problems, oil leaks, fuel pump replacement, water pump repair/replacement, AC repair, shock replacement, electric system diagnosis, check engine light diagnosis, coolant leaks and other services your Hummer may need.
Oil change or major repairs – bring your Hummer to Mallard Auto Care in Castro Valley and our friendly staff will be happy to help. Set up an appointment online, or simply call us.
Expert Hummer Service in Castro Valley – Routine Maintenance or Major Repairs, We’ve Got You Covered!



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