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Hummer H1 being restored by master mechanics in Chapman Mobil workshop, Orange CA
🪖 SVC-CODE H1 / H2 / H3
Home/Hummer Restoration
🛻 H1 · H2 · H3 specialists · Ground-up rebuilds

Hummer Restoration.
Done right.

Ground-up restoration of the Hummer H1, H2, and H3 — engine, body, paint, interior, electrical, suspension. Master mechanics. Fair pricing. Up to a 4-year labor warranty on mechanical work. Built in Orange, CA.

Get a restoration quote (949) 672-8954
Master Mechanics
Up to 4-Yr Labor Warranty
Fair, Written Pricing
OEM, NOS & Quality Parts
H1·H2·H3
Models supported
30+ yrs
Master experience
4.6★
Google rating
Up to 4-yr
Labor warranty
Fair
Written pricing
OEM+NOS
Quality parts
01 · Models

🛻 Every Hummer. One shop.

H1, H2, H3 — every model, every quirk, every system. Handled in-house.

3 models supported
Hummer H1 / HMMWV
🪖 Military-grade beast
H1
1992 – 2006
🪖
Hummer H1 / HMMWV

The original. Aluminum body, portal axles, CTIS, and 6.5L diesel or 6.6L Duramax conversion. Our specialty.

Specialties5 items
Duramax 6.6L conversion
Original 6.5L diesel rebuild
Portal axle service
CTIS overhaul
Mil-spec wiring rebuild
Hummer H2 / H2 SUT
🛻 Wide-body powerhouse
H2
2003 – 2009
🛻
Hummer H2 / H2 SUT

Vortec V8, 6L80 transmission, air suspension, and unmistakable sheet metal — restored inside and out.

Specialties5 items
Vortec 6.0L / 6.2L V8 rebuild
6L80 transmission service
Air suspension rebuild
Custom interior reupholster
Full electrical refresh
Hummer H3 / H3T
🚙 Daily-driver classic
H3
2005 – 2010
🚙
Hummer H3 / H3T

Inline-5 or 5.3L Alpha V8. Frame rust repair, drivetrain rebuilds, and full cabin restoration with modern infotainment.

Specialties5 items
I-5 / 5.3L Alpha V8 rebuild
Frame rust & undercoating
Apple CarPlay retrofit
Suspension & 4WD overhaul
Cabin reupholster
02 · Scope

🔧 Zero to one hundred. Every system.

Engine to body, paint to interior, electrical to suspension — every system on your truck, handled in-house.

⚙️
01
⚙️
Engine & Drivetrain
Teardown to swap
Full teardown, machine, & rebuild
OEM gaskets, bearings, rings, timing
Transmission rebuild · Allison / 6L80 swap
Duramax / LS / Cummins conversions
🎨
02
🎨
Body & Paint
Bare-metal to show finish
Rust arrest & corrosion treatment
Strip-to-metal sandblast & prep
Base/clear, single-stage, matte options
Factory color-match or custom paint
🛋️
03
🛋️
Interior & Cabin
Reupholster · retrofit
Custom leather, vinyl, Alcantara
Headliner, carpet, door cards
Apple CarPlay / Android Auto retrofit
Recaro / Sparco seat upgrades
04
Electrical & Wiring
Mil-spec to modern
Full harness inspection & repair
ECU / BCM / TCU diagnostics & flash
LED conversion (head, fog, cabin)
Backup cam, dash cam, GPS install
🏔️
05
🏔️
Suspension & Chassis
Stock or lifted
H2 air suspension rebuild
H1 portal axle teardown & service
Lift kits, off-road tires, beadlocks
Frame straightening & undercarriage
06
Finishing & Detail
Concours-grade polish
Multi-stage polish & paint correction
Ceramic coating (5–10 yr protection)
Chrome & trim restoration
Wheel powder coat or replace
03 · Process

🛣️ How a restoration runs.

Every project. Every customer. Same five steps — written quote first, no surprises, photo-logged progress.

01
🛻
01
Step 01
Consultation & inspection
Bring the Hummer in. We do a full multi-point inspection, document every system, and discuss your goals — daily driver, weekend toy, or show build.
02
📝
02
Step 02
Written scope & quote
Line-itemed estimate covering parts, labor, paint, and finish. Phase 1 / 2 / 3 options so you can stage the work over time if needed.
03
🔧
03
Step 03
Teardown & sourcing
Strip down to the agreed level — engine out, body off, or component-level. We source OEM, NOS, and high-quality aftermarket parts at fair pricing.
04
🎨
04
Step 04
Rebuild & finish
Mechanical rebuild, body & paint, interior, electrical — every step photographed and logged. Master mechanic on every job, no apprentices unsupervised.
05
🏁
05
Step 05
QC, delivery & warranty
Final road test, multi-point QC, written report. Up to 4-year / 48,000 km labor warranty on all major mechanical work.
04 · Before & after

📸 Recent builds. Photo-logged.

Documented from intake to delivery. Real trucks, real timelines, real results.

4 builds shown
PROJECT 01 / 04
Desert Tan H1 Alpha — after
Desert Tan H1 Alpha — before
📥 Before
✨ After
Desert Tan H1 Alpha
🏜️ H1 Alpha · 2006
Full Phase 3 build · Duramax conversion · Custom interior
Frame-off teardown. Duramax 6.6L LBZ + Allison 1000 swap. Bare-metal repaint in Desert Tan. Full custom Saddleback leather interior with Alcantara headliner. Delivered in 7 months.
PROJECT 02 / 04
Stealth Black H2 — after
Stealth Black H2 — before
📥 Before
✨ After
Stealth Black H2
🖤 H2 SUV · 2008
Phase 2 full restoration · Air suspension + paint
Complete air suspension rebuild, Vortec 6.2L rebuild, full repaint in matte black, blackout trim package, custom 22" wheels, Recaro front seats. 11 weeks shop time.
PROJECT 03 / 04
Victory Red H3 Alpha — after
Victory Red H3 Alpha — before
📥 Before
✨ After
Victory Red H3 Alpha
🔥 H3 Alpha · 2009
Phase 2 full restoration · Frame repair + V8 rebuild
Heavy frame rust repair, 5.3L Alpha V8 rebuild, modern infotainment retrofit with Apple CarPlay, full cabin reupholster in black leather, factory Victory Red repaint. 9 weeks.
PROJECT 04 / 04
Midnight H1 Wagon — after
Midnight H1 Wagon — before
📥 Before
✨ After
Midnight H1 Wagon
🌙 H1 Wagon · 1998
Phase 2 mechanical + cosmetic
Original 6.5L diesel rebuild, portal axle service, CTIS overhaul, full mil-spec wiring refresh, satin black single-stage repaint, refurbished factory interior. Delivered in 14 weeks.
Want the full build galleries?
We share complete photo logs and customer references on request — including same-model builds matching your truck.
Request galleries
05 · Consultation

📞 Start with a free consultation.

Every Hummer restoration starts with a real conversation — not a price tag. Tell us about your truck and your goals, and a master mechanic will get back to you within one business day with a clear plan and starting quote range.

🔍
Honest assessment
We'll review your truck's condition and goals before suggesting any work.
📝
Written estimate
Line-item quote covering parts, labor, finish — no surprises.
🚚
Out-of-state welcome
Enclosed-trailer pickup and delivery available across the lower 48.
🔒
No pressure, no spam
One reply, on your timeline. We answer questions even if you don't book.
Prefer to talk? (949) 672-8954
🔒 We respond within one business day · No spam, ever
06 · Why Chapman

🛡️ What protects your investment.

A restoration is a six-figure decision. Here's exactly how we earn — and keep — that trust.

6 guarantees
M-01
State certified
BAR Licensed & EPA 609
Fully licensed by the California Bureau of Automotive Repair. EPA-certified refrigerant handling. Every job complies with state and federal regs.
M-02
Fixed pricing
Written, Itemized Quote
Every part, every hour of labor, every paint material on paper before any work begins. Quoted price is the final price.
M-03
Total transparency
Weekly Photo Build Log
A private photo album updated every Friday — teardown, progress, parts laid out, paint, assembly. You see everything.
M-04
Secured & insured
Climate-Controlled Bay
Your Hummer sleeps inside a secure, dehumidified bay throughout the build. Insured, monitored, and untouched outside business hours.
M-05
Lower 48 covered
Nationwide Pickup
Insured enclosed-trailer transport from anywhere in the lower 48. Door-to-door, on the agreed date, with photo handoffs at both ends.
M-06
Labor-backed
Up to 4-Yr Warranty
Mechanical labor backed for up to 4 years / 48,000 km. Paint and finish covered by the manufacturer warranty of the materials used.
07 · FAQ

❓ Common questions.

The most-asked questions about Hummer restoration at Chapman Mobil. Anything else? Drop us a message.

Q1Do you really restore all three Hummer models — H1, H2, and H3?

Yes. We have the tooling, diagnostic equipment, and experience to fully restore H1 (1992–2006), H2 (2003–2009), and H3 (2005–2010). Each model has its own quirks — portal axles and CTIS on H1, air suspension and BorgWarner 4480 on H2, frame rust and 5.3L Alpha on H3 — and we handle all of them in-house at our Orange, CA facility.

Q2How much does a Hummer restoration cost?

Pricing depends entirely on the truck and the scope of work. A mechanical-and-cosmetic refresh sits at the entry end. A full ground-up rebuild — engine, paint, interior, electrical — sits in the middle. Concours / show builds with engine conversions and bespoke interiors are quoted individually. The consultation is free and ends with a written line-item estimate, so you know the exact number before any work begins.

Q3How long does a Hummer restoration take?

A Phase 1 refresh takes 1–3 weeks. A full Phase 2 restoration usually runs 8–16 weeks depending on parts lead time. Frame-off concours builds can take 4–9 months. We give a realistic timeline with the written quote and send weekly photo updates every Friday so you always know exactly where your build stands.

Q4Can I do the restoration in stages to spread the cost?

Yes — many of our customers do exactly that. Phase 1 (refresh) → Phase 2 (mechanical & paint) → Phase 3 (concours / upgrades). We write the scope so each phase stands on its own, with no compromise on quality if you pause between phases. There is no penalty or relock fee to come back later.

Q5Do you source OEM Hummer parts?

Yes. AM General OEM parts are our first choice when available. We also source NOS (new old stock) for hard-to-find H1 components and discontinued trim. When OEM is unavailable, we use vetted aftermarket brands we have tested on real builds — never the cheapest option. Custom one-off parts are fabricated in-house. Every part is quoted in writing before purchase.

Q6What warranty do you offer on Hummer restoration work?

All mechanical labor is backed by our up to 4-year / 48,000 km labor warranty. Paint and body are covered by the manufacturer warranty of the materials used (typically 3–5 years against defect). Engine rebuild work is covered for up to 4 years on labor with parts warranted by the supplier. If anything fails within warranty we fix it — no paperwork, no argument.

Q7I live in another state. Can I still use Chapman for my Hummer restoration?

Yes — about 30% of our restoration customers are out-of-state. We arrange insured, enclosed-trailer transport from anywhere in the lower 48 (or air freight for Alaska / Hawaii). You receive weekly photo updates throughout the build, video walkarounds at key milestones, and we coordinate delivery back to you on the agreed date. Many customers fly in for the final delivery.

Q8Where is my Hummer stored during the build?

Inside our secure, climate-controlled bay. Dehumidified to prevent further corrosion, monitored 24/7, fully insured, and never moved or driven outside the documented scope. Your truck sleeps indoors from the day we receive it to the day it goes home.

Q9Do you offer payment plans for the restoration?

Yes. Phase-based payments are the most common — you pay per phase as work is completed, not all up front. For larger Phase 3 builds we typically structure four milestone payments: deposit at intake, teardown complete, paint & body complete, final delivery. We can also work with collector-car financing partners on request.

Q10Are you authorized by AM General?

We are an independent specialist shop — not a factory dealer. We source AM General OEM parts directly through authorized distributors. Our work meets and often exceeds factory tolerances, and many of our master mechanics have been working on Hummers since the original civilian H1 launched in 1992.

Q11Will my Hummer be insured while it's in your shop?

Yes. Every vehicle in our care is covered by our garage-keepers liability insurance throughout the entire build, including paint booth, road testing, and transport between facilities. You can request a certificate of insurance for your own records.

Q12Can I add custom touches — wheels, lift, interior, off-road armor?

Absolutely. Most Phase 2 and 3 builds include personalization. We have working relationships with Recaro, Sparco, BFGoodrich, Method, ICON, and other trusted brands. Custom interiors, bespoke leather, performance suspension, off-road armor, audio, and trim packages are all available — quoted as add-ons to the base phase pricing.

Bring your Hummer home. We'll handle the rest.

Written quote
Photo progress log
Up to 4-yr labor warranty
4502 E. Chapman Ave #92, Orange CA 92869
Request a quote (949) 672-8954
Call Book Service