VENTURA COUNTY
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Fast Response Locksmith

2003 Cadillac CTS
Key Replacement - Save vs Dealer in Ventura County

No Towing Required | We Bring the Shop

Available
2003 Cadillac CTS Transponder Key
Transponder Key

Our fully-equipped mobile unit comes directly to your home, office, or wherever you are. No towing, no waiting rooms, no rearranging your day. We handle everything on-site.

CA BSIS LICENSE LCO#6792
Service at Your Door No Appointments On Your Schedule
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
Key specialists
Key Specialists
Fully equipped mobile unit - all makes and models
Fixed pricing
At Your Location
Home, office, parking lot - wherever you are
Fast mobile service
No Towing Needed
We handle everything on-site, even all-keys-lost
805 Special
10% OFFCODE:EZ-805-2026

🔥 No dealer trip, plus a discount 🔥

Use at home, office, or roadside
REDEEM (805) 790-8162

2003 Cadillac CTS
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Cadillac key typeMost Popular
2003 Cadillac CTS Transponder Key
FCC IDPart #5928825ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2003 Cadillac CTS Remote L2C0005T
FCC IDL2C0005TPart #16263074-99Buttons4BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
🔧 PRO TIP
The 2003 CTS uses a transponder key, and the relearn on these older GM setups is done without a scan tool. If you still have at least one working key, adding a spare is an onboard procedure: a timed cycle using the ignition and the existing key to authorize the new one. All-keys-lost is a different story because you need the right equipment to get back into security access without a working key to start the sequence. Know which situation you're in before you call anyone, because the labor and time are not the same job.
Related services: Ignition Repair · Smart Key

Your Cadillac CTS Key at Your Location

Your driveway vs their service bay

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
Your driveway beats their waiting room
Book Service (805) 790-8162

2003 Cadillac CTS Transponder Key Replacement - Fast, Affordable & Professional

A guy came out to Ventura for Thanksgiving, staying with his daughter near Juanamaria, and his only CTS key had been riding loose in a jacket pocket for years. The blade was worn and the key was cutting out intermittently on cold starts. He wasn't locked out yet. He just knew it was coming.

He asked me straight up whether an aftermarket blank would hold up as a daily driver key or if he should insist on buying from a Cadillac dealer. Honest question, and it deserved a real answer.

I carry aftermarket transponder blanks I've tested across a long run of GM jobs. The blade profiles are matched to the vehicle, the transponder chip is the correct type for the year and platform, and I've returned whole batches when the quality wasn't there. The functional difference between a well-sourced aftermarket key and the dealer key, in everyday use, is nothing you'll ever notice.

I cut the new key to match his locks, ran the relearn on site in the driveway, and confirmed it started clean. He tested it himself a few times just to be sure. The worn original key went into a zip pocket as his backup, which is exactly where a backup key belongs.

He saved a good chunk compared to what a dealer would have quoted, and he wasn't spending his Thanksgiving morning in a service waiting room.

Save vs the Dealer on Your Cadillac CTS 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: Casitas Springs · College · Downtown Ventura · East Ventura

Cadillac CTS Rapid Response, Done Right

Rapid response in the field

2003 Cadillac CTS Transponder Key
2003 Cadillac CTS
Transponder Key | Made at Your Door
Estimated arrival time to Ventura
We Come to You
Rapid Arrival
Available Today
Service location Ventura
Ventura
We Come Here
805 Area
Same-Day Keys (805) 790-8162

Cadillac Customers Love the Convenience

What doorstep service looks like in reviews

J
Joseph C.
Apr 2024
★★★★★

“I needed two keys made for my Honda Element. Friendly, fast, fair pricing, and far better than any other locksmith I have used in the area. Best service by far.”

Yelp Review
P
Priscilla L.
May 2025
★★★★★

“I lost my Honda Passport key and called EZ Car Keyz. He came out and made a new key in under five minutes. Legendary service.”

Google Review
D
Dan G.
Mar 2024
★★★★★

“They responded instantly, showed up within an hour, and arrived exactly when they said they would. Made a copy and programmed a fob for my 2014 car with a worn ignition in about 15 minutes. The new key works perfectly and feels like a dealer key.”

Yelp Review
Watch real savings, real jobs62KFollowers
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Cadillac CTS Mobile Service FAQ

Real costs, no dealer surprises

I lost all my keys to my 2003 CTS. Can you still make me one?
Yes. All-keys-lost on the 2003 CTS is a job we handle on site. Because there's no working key to initiate an onboard relearn, this requires the right equipment to access the vehicle's security system and authorize a fresh key from scratch. We cut the replacement key, run the security relearn, and confirm the car starts before we leave. You don't need to tow it anywhere. Dealers will tell you to tow the car in and expect a full day turnaround because of how their scheduling and programming queues work. We come to you.
Do I really have to tow my CTS to the dealer if I have no working key?
How long does an all-keys-lost job take on a 2003 CTS?
I have one working key for my 2003 CTS. Can I make a spare without a scan tool?
My 2003 CTS starts fine but the security light stays on after the engine catches. Is something wrong with the key?
Questions? Call (805) 790-8162

Cadillac CTS Key Service Areas

Home, work, or roadside in any city

📍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

We come to your exact location in any of these cities

SOS Call (805) 790-8162
Filmed on Location
Cadillac CTS car key replacement video
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Skip the Dealer, We Drive to You

Your car stays where it is. We drive to you with all the tools and key blanks on board.

Available 6AM - 11:30PM | 7 Days a Week
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Ventura County