VENTURA COUNTY
6AM - 11:30PM • MOBILE SERVICE •
Call or Text (805) 790-8162
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Fast Response Locksmith

2020 Cadillac CT4
Key Replacement - Save vs Dealer in Ventura County

Mobile Locksmith | We Come to You

Available
2020 Cadillac CT4

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
We Come to You No Towing Needed Home, Work, Roadside
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
Fast 2020 Cadillac CT4 key replacement quote from EZ Car Keyz Santa Barbara CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
Fast 2020 Cadillac CT4 key replacement quote from EZ Car Keyz Santa Barbara CA
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

🔥 Mobile key service at your door 🔥

Redeemable on any mobile service call
REDEEM (805) 790-8162

2020 Cadillac CT4
Key Options

Dealer-grade key for a fair, honest price

Most popular Cadillac key typeMost Popular
2020 Cadillac CT4  YGOG20TB1
FCC IDYGOG20TB1Part #13538860Buttons5BatteryCR2450Frequency434 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Same-day 2020 Cadillac CT4 key fob replacement from EZ Car Keyz Santa Barbara CA
Skip the Dealer Markup
Professional key, honest rate
Same-day 2020 Cadillac CT4 key fob replacement from EZ Car Keyz Santa Barbara CA
🔧 PRO TIP
The 2020 CT4 runs the same YG0G20TB1 smart key across every trim, including CT4-V and Blackwing. 434 MHz, Hitag Pro ID49 chip, HU100 emergency blade, CR2450 battery. No special "performance tier" key exists, despite what some dealers imply. A dying CR2450 throws "No Remote Detected" on the driver info center and kills push-to-start before it kills the door buttons. If your range drops to arm's length first, that is your warning. Swap the CR2450 before it ghosts completely.
Related services: Ignition Repair · Smart Key

Cadillac CT4 Key: Mobile vs Dealer Visit

No towing, no waiting rooms - compare the experience

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

2020 Cadillac CT4 Replacement - Fast, Affordable & Professional

Got a call around 8:15 in the morning from an insurance agent near Cottage Hospital in Santa Barbara. Her 2020 CT4 was sitting in the office lot, push-to-start completely dead, and she had a client showing up at 9. No wiggle room.

I made it to her in about 20 minutes. The CT4 was locked and unresponsive to the fob, so I decoded the HU100 keyway with my Lishi tool and got the door open. Inside, I connected through the OBD port and pulled the immobilizer status. The Body Control Module, GM part number 13529177 on these Alpha platform cars, was not seeing the key at all.

Popped her YG0G20TB1 open on the hood. The CR2450 was original, almost three years old, and voltage was down to nothing. Swapped the cell and ran the reprogram through the BCM to clear the communication fault and re-register the fob. Hands-on time was maybe 20 minutes.

I tested all five buttons, push-to-start, and walked the perimeter checking passive entry on every door handle. Everything came back clean. Handed her a spare CR2450 for the glovebox so she would not get stuck like this again.

She made her 9 o'clock meeting. Texted me that afternoon just to say thanks. The dealer alternative would have been a tow, a lost morning, and a bill for way more than what this cost her.

Save vs the Dealer on Your Cadillac CT4 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 CT4 Rapid Response, Done Right

Rapid response in the field

Same-day 2020 Cadillac CT4 key replacement in Santa Barbara CA
| Rapid On-Site Service
2020 Cadillac CT4 | Ventura County
Same-day 2020 Cadillac CT4 key replacement in Santa Barbara CA
2020 Cadillac CT4
2020 Cadillac CT4
| Made at Your Door
Estimated arrival time to Santa Barbara
We Come to You
Rapid Arrival
Available Today
Service location Santa Barbara
Santa Barbara
We Come Here
805 Area
Same-Day Keys (805) 790-8162

Reviews From Happy Cadillac Customers

Mobile service that comes to you

W
Winter K.
Dec 2025
★★★★★

“I lost my key and called EZ Car Keyz. Marco was great. He arrived quickly, explained everything clearly, and kept me informed throughout the entire process. The service was fast, professional, and fairly priced.”

Google Review
C
Christopher H.
Sep 2025
★★★★★

“He arrived within 30 minutes and had everything finished in another 30 minutes for two cars. Everything was programmed and tested perfectly. Cheapest price in town and very honest service.”

Google Review
G
Guillermo C.
Dec 2025
★★★★★

“I called EZ Car Keyz to unlock my truck, make a key, and sync a new key fob. They were at my location within minutes and handled everything fast and friendly. Prices were great and the service was excellent.”

Google Review
Watch real savings, real jobs62KFollowers
Fast 2020 Cadillac CT4 key replacement review - EZ Car Keyz Santa Barbara CA
“Real savings, real reviews.”
Fast 2020 Cadillac CT4 key replacement review - 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 CT4 Mobile Service FAQ

Real costs, no dealer surprises

Are you licensed and insured to work on Cadillac vehicles?
Yes. EZ Car Keyz holds a California BSIS locksmith license, LCO 6792, and carries full insurance. We are also NASTF Vehicle Security Professional certified, which gives us authorized access to GM's SPS programming platform and the security credentials needed for late-model Cadillac immobilizers. The 2020 CT4 sits on GM's Alpha platform, and its BCM requires current GM security subscriptions to register new keys. Not every locksmith has that access. Without it, the car simply will not accept a new fob, and you end up paying twice.
How do I know you are not a scam locksmith?
Will the replacement key work exactly like the original Cadillac key?
My CT4 shows "No Remote Detected" but the fob battery is new. What is going on?
Can I program a replacement CT4 smart key myself at home?
Questions? Call (805) 790-8162

Cadillac CT4 Key Service Areas

We come to you in every city listed

📍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
Same-day 2020 Cadillac CT4 locksmith service area in Santa Barbara County CA
Same-day 2020 Cadillac CT4 locksmith service area in Santa Barbara County CA
Stranded in Ventura County? We respond fast

We come to your exact location in any of these cities

SOS Call (805) 790-8162
Filmed on Location
Cadillac CT4 car key replacement video
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Need a 2020 Cadillac CT4 Key? We Come to You

Our mobile locksmith comes to your home, office, or roadside. No towing, no hassle. Just call.

Get your 2020 Cadillac CT4 key today from EZ Car Keyz Santa Barbara CA
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