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ACG is a Hummer Certified Collision Center

Auto Collision Group is a Hummer certified collision center across California with 13 locations ready to repair your truck. We specialize in Hummer collision repair using OEM parts, lifetime warranties, and a fight-for-you philosophy that puts your interests first, not insurance company profits.

Why Choose ACG for Your Hummer Repair

ACG is a Hummer certified collision center because we understand what your truck means to you. Hummer vehicles demand specialists who know their engineering, their aluminum body panels, and their collision repair standards. Our technicians have logged hundreds of Hummer repairs across our 13 California locations. We don’t cut corners with aftermarket parts or quick fixes. Every Hummer that rolls into our shop gets OEM-only components, factory-spec alignment, and frame work verified by certified equipment. That’s why drivers in Whittier, Los Angeles, Gardena, Santa Ana, Ontario, Rancho Cucamonga, Covina, Victorville, Fresno, Bakersfield, and El Cajon trust us when their Hummer gets damaged.

Your insurance company doesn’t own your repair decision. You do. We fight insurance companies every day over Hummer repair standards so you get what you deserve, not what the insurer’s profit margin allows. Free 24/7 towing, lifetime warranties on all work, and a replacement vehicle while yours is in our shop. That’s the ACG difference.

Hummer Certified Collision Repair Across California

ACG is a Hummer certified collision center with direct factory authorization to repair Hummer vehicles to original specifications. We hold manufacturer certifications that prove our team understands Hummer’s structural requirements, paint matching standards, and electrical systems. That certification matters. It means when your Hummer H2 or H3 comes to us after a side-impact or front-end collision, we’re not guessing. We’re following Hummer’s exact repair protocol.

Our shops across California are equipped with the same diagnostic and repair tools that Hummer dealerships use. Aluminum welding equipment for modern Hummer body panels. Computer-guided frame straightening for structural integrity. Paint mixing systems that match your truck’s original color to the micron. Whether you’re in Whittier, Fresno, or Bakersfield, the ACG location nearest you delivers Hummer-certified quality without the Hummer dealership markup.

OEM Parts Only; We Don’t Compromise

Here’s where many collision shops fail your Hummer. They’ll suggest aftermarket parts to save money and boost their profit margin. Aftermarket bumpers, fenders, and trim look similar to OEM parts, but they don’t fit like OEM parts. They don’t perform like OEM parts. Your Hummer’s resale value drops. Your safety is compromised.

ACG is a Hummer certified collision center that uses only Hummer OEM parts on every repair. We fight insurance adjusters daily over this exact issue. They want to deny OEM parts to pad their bottom line. We override those denials because your truck deserves better. Our lifetime warranty covers every OEM part we install. That’s confidence. That’s integrity. That’s why your insurance company might resist us, but you should choose us every single time.

ACG Manufacturer Certifications

ACG is a Hummer certified collision center among 34+ manufacturer certifications. We’re also Tesla, BMW, Mercedes-Benz, Porsche, Lucid, Jaguar, Land Rover, Infiniti, Acura, Honda, Toyota, Nissan, Hyundai, Kia, Ford, Chevrolet, GMC, Buick, Cadillac, Dodge, Ram, Jeep, Chrysler, Subaru, Volkswagen, Volvo, Mini, Alfa Romeo, Fiat, Fisker, and VinFast certified. That breadth of expertise means whatever vehicle you drive, we know how to repair it right.

We Work With Your Insurance Company

ACG accepts all major insurance carriers including State Farm, Geico, Allstate, Progressive, Farmers, USAA, AAA, and Mercury. We handle the claims process so you don’t have to. Our estimators work directly with your adjuster to ensure the estimate reflects the full scope of your Hummer’s damage. We push back on lowball estimates. We advocate for OEM parts when adjusters suggest aftermarket alternatives. We fight for you in ways that many shops won’t.

Free 24/7 towing from anywhere in California gets your Hummer to the nearest ACG location. Free online estimates let you see repair costs before you decide. Replacement vehicles and rental assistance keep your life moving while your truck is being repaired. These aren’t perks. They’re part of respecting your time and your situation.

Insurance Partners

State Farm
Geico
Allstate
Progressive
Farmers
USAA
AAA
Mercury

[toggle title=”What makes ACG a Hummer certified collision center?”]

ACG is a Hummer certified collision center because we completed Hummer’s factory training program and maintain their certification standards. We use OEM parts, follow Hummer’s repair procedures, and have technicians trained specifically on Hummer vehicles. Our shops across California hold active Hummer certifications, verified by the manufacturer.

[/toggle] [toggle title=”Does ACG use OEM or aftermarket parts on Hummer repairs?”]

ACG uses OEM parts exclusively on every Hummer repair. We never substitute aftermarket parts. OEM parts fit correctly, perform to factory specs, and maintain your truck’s resale value. Our lifetime warranty covers all OEM parts we install, giving you confidence that your repair will last.

[/toggle] [toggle title=”Will ACG fight my insurance company over repair standards?”]

Yes. We fight insurance companies daily over repair quality and OEM parts. If your adjuster denies OEM parts or recommends a lower repair standard, we challenge it. We work for you, not the insurance company. Our philosophy is simple: We