Cadillac Key Replacement Cost (2026)

As of October 2026, a Cadillac key replacement runs $300 to $700 all-in through a mobile automotive locksmith. A proximity spare on an XT5, XT4 or pre-Super-Cruise CTS sits at the bottom of that band. An Escalade with Super Cruise, a display key and every key lost sits at the top. A dealer charges meaningfully more for the same work, and on a vehicle that cannot drive itself to the service bay, the tow is a real line on the bill.

That is a wide band, and the width is the useful part. Cadillac is not one key problem. It is four, and which one you have is decided by your model year, your trim, and whether the vehicle has Super Cruise. This guide is about telling them apart before you agree to a number, because the distance between the cheapest and the most expensive Cadillac key job is larger than the entire price of a Toyota key.

What a Cadillac key costs in 2026

These are the ranges published on our Cadillac make page, quoted as total on-site prices rather than a part price with the labour added later.

Cadillac situation	Typical years	Spare, working key present	All keys lost
PassKey III bladed transponder	through 2008	$235 – $315	quoted per vehicle
PK3+ HITAG-2 bladed transponder	~2009 – 2014	$255 – $345	quoted per vehicle
HITAG-AES proximity	2015 onward	$275 – $385	$375 – $495
Super Cruise, OnStar-paired immobilizer	2018 onward, trim-dependent	$325 – $445	$475 – $625
Lyriq Ultium EV	2023 onward	$295 – $425	quoted per vehicle
Display key, Premium Luxury and V-Series Blackwing	where fitted	add $75 – $125	add $75 – $125

Two notes on reading that table honestly. The all-keys-lost column is left unquoted for the older bladed generations because those jobs are priced per vehicle rather than from a standing band, and a range invented to fill a cell is worse than an empty cell. And the display-key line is an addition, not a replacement. A Blackwing with every key lost is the Super Cruise all-keys-lost figure plus the display-key addition, which is how a Cadillac key job reaches the top of the $700 band.

Why Cadillac sits above Chevrolet on the same platform

Cadillac shares the GM immobilizer architecture with Chevrolet and GMC. The progression is the same across all three brands: PassKey III through 2008, PK3+ HITAG-2 from roughly 2009 to 2014, and GMLAN HITAG-AES proximity from 2015 onward. An Escalade and a Tahoe are closer relatives under the dash than their window stickers suggest.

So the immobilizer is not why Cadillac costs more. Three other things are.

The first is the blank. A Cadillac proximity fob is a more expensive part than the equivalent Chevrolet fob, and that difference passes through at cost rather than being absorbed.

The second is the display key on Premium Luxury Escalades and V-Series Blackwing sedans. It carries a screen and pairs over Bluetooth on top of the normal immobilizer handshake. That is a second, separate pairing procedure, which is why the addition is quoted in both money and time.

The third is Super Cruise, and it earns its own section because it is the only part of a Cadillac key job that can stall for reasons outside the technician's control.

Super Cruise and the OnStar complication

Super Cruise is the hands-free highway driving system, and it depends on OnStar for high-definition map data. To make that work, GM paired the OnStar module with the immobilizer on Super Cruise vehicles: CT5 and CT4 V-Series, Escalade from 2021, Lyriq and Celestiq.

The practical consequence shows up in exactly one scenario. When every key is lost on a Super Cruise vehicle, the car can engage stolen-vehicle slowdown, which limits engine torque and caps top speed. That is a theft countermeasure doing its job. The flag is cleared through OnStar, not through the diagnostic port, which means the specialist has to get it released before the vehicle is fully driveable again.

None of that makes the job impossible or dealer-only. It makes it longer and less predictable. A standard Cadillac all-keys-lost is quoted at roughly 75 to 100 minutes on site. A Super Cruise all-keys-lost is 90 to 130 minutes, and the extra fifteen to thirty minutes is largely waiting on a phone call you are not the one making.

Two things follow. If your Cadillac has Super Cruise, say so when you ask for a quote, because a specialist who arrives expecting a standard proximity job has budgeted the wrong window. And be ready to prove you own the vehicle, because OnStar will ask. Registration and a matching photo ID, in the car, at the time of the visit.

Where the common Cadillacs land

• Escalade, 1995 onward. The most recognisable Cadillac and the widest span of key technology in the lineup. Fifth-generation vehicles from 2021 use HITAG-AES with OnStar pairing on Premium Luxury and ESV trims. Older Escalades fall back through PK3+ to PassKey III and are among the cheaper jobs in the brand.
• CT5, 2020 onward. Sport sedan. The V-Series Blackwing adds the display key and memory pairing, and that is the trim that pushes a CT5 toward the top of the band.
• CT4, 2020 onward. Compact sport sedan, same Blackwing display-key consideration.
• XT5, 2017 onward. Midsize crossover on HITAG-AES proximity. For most owners this is the straightforward middle of the Cadillac range.
• XT6, 2020 onward. Three-row crossover, HITAG-AES, with Super Cruise available rather than standard, so the trim question matters here more than on most models.
• XT4, 2019 onward. Compact crossover, HITAG-AES.
• Lyriq, 2023 onward. Ultium EV on refined HITAG-AES with additional gateway hardening. A spare runs $295 to $425.
• Celestiq, 2024 onward. The bespoke flagship EV, currently dealer-only. If you own one, the numbers in this guide do not apply to you, and a specialist should tell you so rather than attempt it.

If your model and year are not on that list, the matched specialist confirms the chip family and the price before anyone is dispatched.

The three things that move the number

Whether a working key exists. This is the largest single lever on every make, and Cadillac is no exception. A vehicle that still trusts one key can be told to accept another. A vehicle with no trusted key has to be persuaded from nothing, which on a Super Cruise Cadillac means the OnStar step as well.

Trim, not just model. On most makes the model tells you the price. On Cadillac the trim does. Two 2023 Escalades in the same driveway can be a $325 job and a $700 job because one is a Premium Luxury with Super Cruise and a display key and the other is not. When you ask for a quote, read the trim off the door jamb or the window sticker rather than working from memory.

How thin the local specialist pool is. Cadillac proximity work needs current GM Service Programming System access, reached through GDS2, Tech 2 Win, or an aftermarket tool carrying a live GM licence. Plenty of competent locksmiths do not carry it. That is not a quality judgement, it is an equipment fact, and it means the qualified specialist may be further from you than the nearest locksmith. Travel distance is the honest reason two quotes differ on identical vehicles, which we cover in drive-out and mileage fees.

When the dealer is actually the right call

We are not going to pretend the answer is always a locksmith. Three cases where the Cadillac dealer is genuinely the better path.

The vehicle is a 2024-or-newer Celestiq. It is dealer-only today. Aftermarket tool support has not arrived, and no amount of shopping changes that.

The key failure is a warranty-coded fault on a vehicle still in coverage. If the body control module failed and the key is not being recognised because of a defect rather than wear, the dealer replaces the module and reprograms keys at no charge. Paying a locksmith to solve a warranty problem is the most expensive way to solve it.

You are already at the dealer for scheduled service. If the car is on the lift anyway, adding a key while it is there can land at roughly the same total as a separate mobile dispatch once you count your own time.

Outside those three, for an out-of-warranty Cadillac, mobile is normally the lower total cost, and on an all-keys-lost it is not close once the tow is counted.

Cadillac key programming: what the price covers

A lot of Cadillac owners search for the programming on its own, as if it were a fee separate from the key. On a Cadillac it is not. Every band in the table above is the whole job: the fob, the emergency blade cut, the programming of both the remote functions and the immobilizer, and the visit.

That matters when you compare quotes. A shop that quotes Cadillac car key programming by itself may be assuming you will supply the fob, and on a 2015-or-newer proximity Cadillac the fob is a large share of the number. Ask whether the fob is included before you compare it with an all-in figure. If you are thinking of buying a fob online to save money, check the part number against your VIN first, because a used proximity fob is often locked to the vehicle it was first programmed to.

Our car key programming cost guide breaks down what programming costs by key type across every brand, including the $25 to $60 line for re-pairing a remote you already own, which is the one true programming-only price.

Cheaper outcomes to rule out first

Before you authorise a key, rule out the three things that look like a dead key and are not.

A flat coin cell in the fob. Two to four years of life, and it fails gradually. Shrinking range is the tell. This costs a few dollars and takes a minute.

A worn ignition cylinder on the older bladed Cadillacs. If the key turns sometimes and not others, and wiggling it changes the behaviour, the wafers in the cylinder are worn. A new key with a new chip solves nothing, because the chip was never the problem. Our guide to a key that will not turn in the ignition walks through the difference.

An open safety recall that covers the work. Before paying out of pocket on any vehicle, check your VIN against the NHTSA recall database. If an open recall covers the remedy, the dealer performs it at no charge. A specialist who finds an active VIN-covered recall at dispatch should pause the paid job and say so.

What the visit actually looks like

Knowing the expected length of the appointment is worth as much as knowing the price, because it tells you whether the person quoting has understood your car.

• Spare with a working key present: 30 to 50 minutes on site.
• All keys lost, standard proximity: 75 to 100 minutes.
• All keys lost, Super Cruise vehicle: 90 to 130 minutes, with the extra time spent on the OnStar clearance.
• Display key, any scenario: add a further 15 to 20 minutes for the Bluetooth pairing step.

Those windows are the reason a Cadillac all-keys-lost is not a lunchtime errand. If someone quotes a Super Cruise Escalade with no keys at forty minutes, they have priced a different job, and the correction will arrive as either a surprise invoice or an abandoned visit.

Two practical notes for the day itself. Park somewhere the technician can work with the doors open, because a proximity relearn is not something to conduct in a live traffic lane. And have your ownership documents physically in the car rather than at home, since a Super Cruise job needs them for the OnStar conversation.

Getting a Cadillac quote that holds

A Cadillac quote is only as good as the four facts it was built on. Have these ready and the number you are given up front is the number you pay.

1. Year, model and trim. Trim is not optional on this make. Premium Luxury, V-Series and Blackwing change the answer.
2. Whether the vehicle has Super Cruise. If you are unsure, look for the light bar on the steering wheel. Its presence changes both the price band and the length of the appointment.
3. Whether any working key exists, including one you believe is dead but have not retested with a fresh battery.
4. Whether your key has a screen on it. That is the display key, and it is the $75 to $125 addition.

A specialist who quotes without asking those four is guessing, and a guess is what turns into a different number once someone is standing at your car. Ask what the figure includes, ask whether it covers the visit, and ask what happens to the price if a working key turns up in a coat pocket before they arrive.

For what the work looks like on the day, our guide to same-day versus scheduled appointments covers which one is actually cheaper, and what a legitimate shop asks for covers deposits and payment before you hand over a card. If your Cadillac shares a driveway with a Chevrolet or GMC on the same GM architecture, the Chevrolet cost guide is the closest comparison in this series and a useful check on how much of a Cadillac quote is brand and how much is technology.

Ready to be matched with a specialist who carries GM Service Programming System access? Start at get help, or read how it works first if you would rather know what happens before you ask.