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2009 Hummer H3
Key Replacement - Save vs Dealer in San Diego

Fair Prices | No Hidden Fees

Available
2009 Hummer H3 Transponder Key
Transponder Key

Dealerships charge a premium because they can. We don't. Same key, same programming, same quality - just without the markup. Call for an honest quote with no hidden fees.

CA BSIS LICENSE LCO#6792
Save Hundreds Today Dealer Quality Key Upfront Pricing
Fast Response15-25
min arrival
100+reviews
See why they skip the dealer113KSubscribers
Stranded without a 2009 Hummer H3 key? EZ Car Keyz San Diego CA can help
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • San Diego, CA
15+
Yrs Exp
Stranded without a 2009 Hummer H3 key? EZ Car Keyz San Diego CA can help
Key specialists
Save 40-60%
Same OEM-quality key, fraction of the dealer price
Fixed pricing
Fixed Pricing
The quote on the phone is what you pay. Period.
Fast mobile service
Free Mobile Service
No trip fees, no towing costs - service included
619 Special
10% OFFCODE:EZ-619-2026

🔥 Fair price, pro key, your door 🔥

No exclusions on key type or service
REDEEM (619) 876-1271

2009 Hummer H3
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Hummer key typeMost Popular
2009 Hummer H3 Transponder Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2009 Hummer H3 Remote L2C0007T
FCC IDL2C0007TPart #10335582Buttons3BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Emergency 2009 Hummer H3 key fob made from scratch by EZ Car Keyz San Diego CA
Skip the Dealer Markup
Professional key, honest rate
Emergency 2009 Hummer H3 key fob made from scratch by EZ Car Keyz San Diego CA
🔧 PRO TIP
The 2009 H3 runs a transponder key, no remote, no fob, just a key that has to talk to the immobilizer before the engine will stay running. The chip is passive, so there's no battery inside the key to worry about. What matters is that the chip is read correctly at startup. If you see the security light flashing or the engine cranks and dies right away, that's the immobilizer rejecting the key, not a mechanical issue. Programming these requires a diagnostic tool that can write to the vehicle's security system through the OBD port. There's no ignition-turn DIY sequence on this setup. Also worth knowing: the key blank itself has to be cut right. A sloppy cut that slips in the cylinder can cause intermittent read failures even if the chip is fine, because the key isn't sitting in the correct position when you turn it.
Related services: Ignition Repair · Smart Key

Compare the Cost of a Hummer H3 Key

See the price difference before you call

EZ Car Keyz
EZ Car Keyz
Dealership
Average Cost
✓ $$
✕ $$$$
Location
✓ We come to you
✕ You drive there
Wait Time
✓ 20-45 min
✕ 2-5 days
Same-Day
✓ Yes
✕ Rarely
All Keys Lost
✓ No problem
✕ Tow required
OEM Quality
✓ Yes
✓ Yes
EZ Car Keyz wins 5 out of 6
Save hundreds without sacrificing quality
Book Service (619) 876-1271

2009 Hummer H3 Transponder Key Replacement - Fast, Affordable & Professional

I was parked on 30th Street in North Park when the call came in. Guy had a 2009 H3, one key, and it had snapped off right at the bow, the round part you grip. The blade was still in the ignition cylinder, flush enough that his fingers couldn't get purchase on it.

He'd already tried tape and a magnet. Neither worked, and the magnet made him nervous when I told him the chip was in the piece he'd pulled out, not the piece still stuck inside.

I extracted the broken blade without pulling the cylinder. That part goes slow. You work a broken key out wrong and you're replacing the cylinder, which is a different job and a different conversation. Once it was out, I decoded what was left of the blade to get the cut depths, then cut a fresh key blank to match.

The new key turned, the engine cranked, and then it died. Right on cue. That's the immobilizer doing its job. The new key had the right cuts but an unregistered chip, so the vehicle wasn't going to let it start. Plugged in the programmer through the OBD port, enrolled the new transponder, and the security light went solid then went out the way it's supposed to.

He asked about getting a spare cut at a hardware store. I told him a basic copy would work the lock but the engine would crank and die every time, because the copy won't have a programmed chip. He ordered a second key on the spot.

He'd called the dealer first. They wanted to schedule him days out and tow the truck in since it wasn't drivable. We handled it on the street in about an hour, for a fraction of what they wanted.

Save vs the Dealer on Your Hummer H3 Key

Get your key for hundreds less than the dealer. Same quality, same result, better price.

Get Pricing (619) 876-1271 Text Us
BSIS Licensed Locksmith - California License LCO#6792
BSIS Licensed
CA Bureau of Security & Investigative Services
NASTF Certified Automotive Locksmith - Vehicle Security Professional
NASTF Certified
National Automotive Service Task Force
Fully Insured Locksmith - Hiscox Liability and Vehicle Damage Coverage
Fully Insured
Liability & vehicle damage coverage
Google Guaranteed Locksmith - Verified and Background Checked
Google Guaranteed
Verified & backed by Google
Also serving: Barrio Logan · Bay Park · Carmel Mountain Ranch · City Heights

Hummer H3 Rapid Response, Done Right

Rapid response in the field

2009 Hummer H3 Transponder Key
2009 Hummer H3
Transponder Key | Programmed for Less
Estimated arrival time to San Diego
Quick & Affordable
Rapid Arrival
Available Today
Service location San Diego
San Diego
Best Rate Here
619 Area
Same-Day Keys (619) 876-1271

Five Stars for Fair Hummer Prices

What honest rates sound like in reviews

A
Alexx C.
Dec 2025
★★★★★

“My key fob stopped working while I was at Oxnard Harbor and I thought I was going to need a tow. EZ Car Keyz showed up fast, programmed a new fob, checked everything carefully, and made sure the car was fully functional before leaving.”

Google Review
M
Mark F.
Feb 2024
★★★★★

“Needed a spare car key made and chose EZ Car Keyz based on their reviews. The reviews were right. They gave me the best price, responded quickly to all my questions, came to my workplace, cut the keys on site, and finished fast.”

Yelp Review
S
Sonia V.
Feb 2024
★★★★★

“Marco came out quickly, cut and programmed a new BMW key fob fast, and was extremely polite and professional.”

Yelp Review
Watch real savings, real jobs62KFollowers
Locked out rescue review for 2009 Hummer H3 - EZ Car Keyz San Diego CA
“Real savings, real reviews.”
Locked out rescue review for 2009 Hummer H3 - EZ Car Keyz San Diego CA
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Hummer H3 Mobile Service FAQ

Real costs, no dealer surprises

Does the 2009 Hummer H3 transponder key have a battery inside it?
No. The transponder key on the 2009 H3 is a passive chip, meaning it has no battery. It draws power inductively from the antenna ring around the ignition cylinder when you insert and turn the key. Nothing to replace, nothing to go dead. If your key is failing, the issue is either the chip itself, the antenna ring, or the programming, not a dead battery.
My H3 has a key fob I use to lock and unlock the doors. Is that a separate thing from the transponder key?
How much does a 2009 Hummer H3 key replacement cost?
My H3 starts and then immediately stalls. The security light is on. What is happening?
Can I get a spare H3 key cut at a hardware store or one of those kiosk machines?
Questions? Call (619) 876-1271

Hummer H3 Key Service Areas

No trip fees in any service area

📍San Diego County
San Diego County service area map
619 LOCAL LOCKSMITH
need a key? 🔑
San DiegoChula VistaOceansideEscondidoCarlsbadEl CajonVistaSan MarcosEncinitasNational CityLa MesaSanteePowayCoronado
Lockout rescue coverage for 2009 Hummer H3 in San Diego County CA
Emergency dispatch throughout San Diego County

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Get Help Now (619) 876-1271
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Affordable 2009 Hummer H3 Key Replacement

Transparent pricing on every job. No markup games, no bait and switch. Fair price.

Locked out of your 2009 Hummer H3? Get help from EZ Car Keyz San Diego CA
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