VENTURA COUNTY
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Fast Response Locksmith

2004 Cadillac Seville
Key Replacement - Save vs Dealer in Ventura County

No Delays | No Runaround

Available
2004 Cadillac Seville Transponder Key
Transponder Key

Need your key replaced today? We offer same-day mobile service with an average arrival time of 20-30 minutes. Most keys are cut and programmed in under 45 minutes.

CA BSIS LICENSE LCO#6792
Immediate Response Done While You Wait No Multi-Day Wait
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
Rapid response 2004 Cadillac Seville key details from EZ Car Keyz Santa Barbara CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
Rapid response 2004 Cadillac Seville key details from EZ Car Keyz Santa Barbara CA
Key specialists
15-25 Min Arrival
Our mobile unit is dispatched immediately
Fixed pricing
No Appointment Needed
Walk-up service available 7 days a week
Fast mobile service
Quick Turnaround
Most keys completed in under 45 minutes on-site
805 Special
10% OFFCODE:EZ-805-2026

🔥 Back on the road fast, for less 🔥

Get your key & your discount fast
REDEEM (805) 790-8162

2004 Cadillac Seville
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Cadillac key typeMost Popular
2004 Cadillac Seville Transponder Key
FCC IDPart #B99 35118-SDA-A01 5907553 BHO02PT HD112 HO03PT S000A-S711K 15821273ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2004 Cadillac Seville Remote KOBLEAR1XT
FCC IDKOBLEAR1XTPart #10443537Buttons4BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
MECHANICAL-KEY
2004 Cadillac Seville MECHANICAL-KEY
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Instant 2004 Cadillac Seville key fob options from EZ Car Keyz Santa Barbara CA
Skip the Dealer Markup
Professional key, honest rate
Instant 2004 Cadillac Seville key fob options from EZ Car Keyz Santa Barbara CA
🔧 PRO TIP
The 2004 Seville runs GM's PK3 (PassKey 3) immobilizer system, not PK3+. The transponder is a Megamos ID 13 fixed-code chip embedded in the key head, and the key blank is a B99 (10-cut GM sidebar). If you lose all keys, the Theft Deterrent Module relearn takes about 10 minutes per key, with a roughly 10-minute security timer between each registration. The system communicates through the column-mounted PK3 antenna ring, and a cracked ring will mimic a dead transponder every time.
Related services: Ignition Repair · Smart Key

Cadillac Key: Same-Day vs Dealer Timeline

Speed matters - see the numbers

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
Done in minutes, not days
Book Service (805) 790-8162

2004 Cadillac Seville Transponder Key Replacement - Fast, Affordable & Professional

Got a call from a guy over in the Alta Mesa area of Santa Barbara. His 2004 Seville wouldn't crank. Key turned, dash lit up, starter did nothing. He said the THEFT SYSTEM message was sitting right there on the DIC and the security light was solid, not flashing.

He'd already tried the 10-minute relearn twice on his own. Sat in the car with the key at ON, waited for the light to cycle off, turned it off, repeated. Nothing changed. He was ready to have it towed.

I got to him in about 30 minutes. Pulled my Lishi GM Z keyway tool, decoded the sidebar, and checked the existing key. The transponder was reading fine on my tester, which told me the key itself was good. I connected through the OBD port and pulled codes. B2960, which is a loss of security data message from the body control module. The PK3 antenna ring around the ignition cylinder had a hairline crack and was reading intermittently.

Swapped the antenna ring, cleared the B2960, ran the relearn with his original key, and the Northstar fired right up. Cut and programmed a spare while I was there so he'd have a backup.

He thought he needed a whole new ignition and a tow to the dealer. It was a plastic ring and some seat time with a scan tool, done in his driveway for a fraction of what the dealership quoted him over the phone.

Save vs the Dealer on Your Cadillac Seville Key

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

Get Pricing (805) 790-8162 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: Downtown Santa Barbara · Eastside Sb · Funk Zone · Hope Ranch

Cadillac Seville Rapid Response, Done Right

Rapid response in the field

Quick turnaround 2004 Cadillac Seville car key by EZ Car Keyz in Santa Barbara CA
Transponder Key | Rapid On-Site Service
2004 Cadillac Seville | Ventura County
Quick turnaround 2004 Cadillac Seville car key by EZ Car Keyz in Santa Barbara CA
2004 Cadillac Seville Transponder Key
2004 Cadillac Seville
Transponder Key | Done in Minutes
Estimated arrival time to Santa Barbara
Fast Dispatch
Rapid Arrival
Available Today
Service location Santa Barbara
Santa Barbara
Rapid Service Zone
805 Area
Same-Day Keys (805) 790-8162

Fast Keys, Happy Customers

Quick service that speaks for itself

D
Diya M.
Jan 2025
★★★★★

“Fast, affordable, and a great price. Marco did an amazing job and made a key for our Nissan Kicks quickly and professionally. Everything worked perfectly.”

Google Review
E
Edelson E.
Oct 2025
★★★★★

“I got locked out of my vehicle and also lost my key. Marco came out, made a new key for my Toyota, and got me back on the road. He was professional, friendly, and clearly knows what he is doing.”

Google Review
M
Miston
Dec 2025
★★★★★

“My ignition would not turn in La Jolla and I thought I needed a tow. EZ Car Keyz repaired the ignition on the spot and also made a spare key for safety. The technician worked carefully and confidently.”

Google Review
Watch real savings, real jobs62KFollowers
Quick response locksmith review for 2004 Cadillac Seville key - EZ Car Keyz Santa Barbara CA
“Real savings, real reviews.”
Quick response locksmith review for 2004 Cadillac Seville key - EZ Car Keyz Santa Barbara CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Cadillac Seville Mobile Service FAQ

Real costs, no dealer surprises

Do you use OEM or aftermarket transponder keys for the 2004 Seville?
We use aftermarket keys built to OEM spec with the correct Megamos ID 13 transponder chip and a B99 10-cut blank. On the PK3 system, the chip is a fixed-code type, meaning once it's programmed to the Theft Deterrent Module, it behaves identically to the factory original. The physical key matters too. Cheap blanks with sloppy sidebar cuts will bind in the GM sidebar lock and wear out the wafers. We verify the sidebar decode and test the cut in every lock on the car before we leave.
How long should a replacement transponder key last on my Seville?
What if the replacement key stops working after a few weeks?
My security light is on solid and the Seville won't crank. Is the key bad?
Can I do the 10-minute PassKey relearn myself to fix a no-start?
Questions? Call (805) 790-8162

Cadillac Seville Key Service Areas

No delays, any service area

📍Ventura County & SB
Ventura County service area map
805 LOCAL LOCKSMITH
need a key? 🔑
Santa Barbara
Santa BarbaraETA 30-35 min
Goleta
GoletaETA 30-35 min
Isla Vista
Isla VistaETA 30-35 min
Montecito
MontecitoETA 25-30 min
Carpinteria
CarpinteriaETA 20-25 min
Ojai
OjaiETA 20-25 min
Ventura
VenturaETA 10-15 min
Santa Paula
Santa PaulaETA 20-25 min
Fillmore
FillmoreETA 25-30 min
Oxnard
OxnardETA 10-15 min
Port Hueneme
Port HuenemeETA 10-15 min
Camarillo
CamarilloETA 15-20 min
Moorpark
MoorparkETA 25-30 min
Simi Valley
Simi ValleyETA 30-35 min
Thousand Oaks
Thousand OaksETA 20-25 min
Santa BarbaraGoletaMontecitoCarpinteriaOjaiVenturaSanta PaulaFillmoreOxnardPort HuenemeCamarilloMoorparkSimi ValleyThousand Oaks
Rapid dispatch 2004 Cadillac Seville locksmith area in Santa Barbara County CA
Rapid dispatch 2004 Cadillac Seville locksmith area in Santa Barbara County CA
Stranded in Ventura County? We respond fast

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Cadillac Seville car key replacement video
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Quick 2004 Cadillac Seville Key Service

Time matters when you need a key. We treat every call as urgent and arrive ready to work.

2004 Cadillac Seville car key done in minutes by EZ Car Keyz Santa Barbara CA
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