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2020 Cadillac CT4
Key Replacement - Save vs Dealer in San Diego

Fair Prices | No Hidden Fees

Available
2020 Cadillac CT4

Why pay $400+ at the dealer when you can get the exact same OEM-spec key for a fraction of the cost? EZ Car Keyz delivers professional key replacement at prices that make sense.

CA BSIS LICENSE LCO#6792
Save Hundreds Today Dealer Quality Key Upfront Pricing
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
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

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
🔧 PRO TIP
Your CT4 uses the same YG0G20TB1 smart key as the CT5 (434 MHz, ID49, CR2450, HU100 blade). The CT4-V and Blackwing variants use identical key hardware. There is no V-specific immobilizer or higher-security key tier.
Related services: Ignition Repair · Smart Key

Compare the Cost of a Cadillac CT4 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
Why pay dealer markup for the same result?
Book Service (619) 876-1271

2020 Cadillac CT4 Replacement - Fast, Affordable & Professional

Your 2020 Cadillac CT4 uses a Key with 5 buttons on the face, a CR2450 battery inside powering the proximity signal, and an emergency blade that slides out of the housing for manual door entry when the battery dies. Inside is a transponder chip that the car's body control module checks every time you press the start button.

A customer at home near Garden Road had a CT4 with a worn smart key. The chrome trim ring was cracked, the rubber button pad was peeling, and the emergency blade slot had gotten loose from daily use. She took it to the dealer and they quoted $254 for a full replacement. What they didn't mention is that the chip and circuit board inside were working fine. She just needed a new shell.

I met her in her driveway with replacement fob shells and my HU100 Lishi for the newer Cadillac keyway. Her fob, FCC ID YGOG20TB1, had the same wear pattern I see on dozens of Cadillac smart keys. I moved the working electronics into a fresh shell, replaced the buttons, and cut a new emergency blade.

She paid about $124. The dealer wanted $254 for a whole new fob when she only needed a shell swap and fresh buttons. The expensive electronics inside were perfectly fine.

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 (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: Garden Road · Lake Poway · Old Poway · Poway Business Park

Cadillac CT4 Rapid Response, Done Right

Rapid response in the field

2020 Cadillac CT4
2020 Cadillac CT4
| Programmed for Less
Estimated arrival time to Poway
Quick & Affordable
Rapid Arrival
Available Today
Service location Poway
Poway
Best Rate Here
619 Area
Same-Day Keys (619) 876-1271

Five Stars for Fair Cadillac Prices

What honest rates sound like in reviews

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
G
Gregorio P.
May 2021
★★★★★

“Steve was incredibly helpful when I lost my car keys. He came out the exact same day and I only waited about 30 minutes. I really needed to get to work and he completely saved me.”

Google Review
A
Antoine M.
Dec 2025
★★★★★

“I am very pleased with the value of the service I received from Marco at EZ Car Keyz. They arrived extremely fast, opened my door in no time, and the price was right on point.”

Google Review
Watch real savings, real jobs62KFollowers
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Cadillac CT4 Mobile Service FAQ

Real costs, no dealer surprises

Why is Cadillac key replacement so expensive?
Cadillac keys carry a double markup: the cost of modern GM smart key technology plus a luxury brand premium on top. A Key has an encrypted transponder chip that communicates with your vehicle's GM theft deterrent system, and newer Cadillacs require online security access and BCM programming that limits who can do the work. But the real kicker is the badge tax. A GM tech revealed that a Cadillac Escalade fob costs $800 at the Cadillac dealer while the functionally identical GMC-branded fob on the same platform is $350. The technology is real, but the Cadillac markup does not have to be.
What is a Key?
How much does the Cadillac dealer charge vs a locksmith?
What is the FCC ID for the 2020 Cadillac CT4 key?
Do you offer a warranty on the key?
Questions? Call (619) 876-1271

Cadillac CT4 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

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Affordable 2020 Cadillac CT4 Key Replacement

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

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San Diego