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

Fair Prices | No Hidden Fees

Available
2020 Cadillac CT4 Key
Key

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
100+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

Key
Most popular Cadillac key typeMost Popular
2020 Cadillac CT4 Key YGOG20TB1
FCC IDYGOG20TB1Part #13538860Buttons5BatteryCR2450Frequency434 MHzRemote StartYes
✓ In Stock · Programmed On-Site
🔧 PRO TIP
The 2020 CT4 runs a GM push-to-start remote system. The fob carries a transponder that communicates with the immobilizer through a backup coil inside the start button housing. That matters because a completely dead fob battery doesn't leave you fully locked out. You can hold the fob directly against the start button area and the passive coil can still read the chip. The car should start. If even that fails, the battery isn't your only problem. The 5-button fob on this car takes a CR2450, not a CR2032. Easy to grab the wrong one at the pharmacy. Make sure you're putting in the right cell before you assume the fob is dead.
Related services: Ignition Repair · Smart Key

Compare the Cost of a Cadillac CT4 Key

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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?
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2020 Cadillac CT4 Key Replacement - Fast, Affordable & Professional

He had just gotten cleared by the cardiologist and was walking back to the parking lot when his 2020 CT4 stopped responding entirely. Pressed the start button, nothing. Held the fob against the button like the manual says to do when the battery is low, still nothing. It was late afternoon off Garden Road in Poway and he had prescriptions to fill before the pharmacy closed.

The dealer was already done for the day. He called me.

I got there, got the door open, and connected to the OBD port. The fob battery had corroded one of the internal contacts badly enough that the passive backup coil couldn't get a read off the transponder. It wasn't just a dead battery. The fob itself was done.

I programmed a replacement remote, confirmed the immobilizer accepted it, and walked every button and the start function before I packed up.

From his call to engine running was about 50 minutes. He made it to the pharmacy with time to spare. When someone has just come out of a medical appointment and needs medication before bed, the timeline isn't a preference. He mentioned the dealer would have been a wait until morning plus a cost that was a solid chunk more than what he paid me. I didn't bring it up. He did.

Save vs the Dealer on Your Cadillac CT4 Key

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

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Also serving: Garden Road Area · Lake Poway Area · Old Poway · Poway Business Park

Cadillac CT4 Rapid Response, Done Right

Rapid response in the field

2020 Cadillac CT4 Key
2020 Cadillac CT4
Key | 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.”

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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

How do I spot a fake locksmith before I get ripped off?
A few things to watch for specifically if you're calling about a Cadillac. If they can't give you a real estimate for your specific year and model over the phone, that's a problem. If the quote is an unusually low "service call" rate with a promise to sort out the rest on arrival, that's a bait-and-switch setup. One CT4 owner posted on a GM forum about calling a "local" number that routed to a call center, and the van that showed up had no markings and the tech didn't know what programming equipment the job required. A real locksmith who works on GM push-to-start vehicles should be able to tell you, without hesitating, what the process looks like for your car, what tools are involved, and approximately how long it takes. If they stall or get vague, move on. Search their business name and look for a real address, real reviews, and some evidence they've worked on GM vehicles before. Cadillac key work is not the same as cutting a house key.
What exactly is a remote key and why can't I just copy it somewhere?
What equipment do you use to program Cadillac keys?
Can I buy a replacement fob online and just have someone program it, or does it have to come from the dealer?
My CT4 is showing a key warning on the dash even though the fob has a fresh battery. What's going on?
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
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San DiegoChula VistaOceansideEscondidoCarlsbadEl CajonVistaSan MarcosEncinitasNational CityLa MesaSanteePowayCoronado

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Affordable 2020 Cadillac CT4 Key Replacement

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