Buick LaCrosse Key Replacement & Programming in Jacksonville
Spare keys from $390. All-keys-lost from $625. Mobile, on-site, same-day service across the First Coast.
Spare or Additional LaCrosse Key
Dealer Price
$625 – $955
Our Price
from$390
When you still have a working key.
Lost All LaCrosse Keys?
Dealer Price
$1,000 – $1,310
Our Price
from$625
When every key is lost or stolen.
Final price depends on your specific LaCrosse year and trim — call us for an exact quote.
Key Specifications — Buick LaCrosse
| Parameter | Value |
|---|---|
| Transponder Chip | Hitag2 / Megamos AES |
| FCC ID | HYQ4EA |
| Key Blade | HU100 |
| Frequency | 315 MHz |
| Immobilizer | GM PK3+ |
| Proximity / Smart Key | Yes (2017+) |
About Your 2026 Buick LaCrosse
Buick is a USA brand owned by General Motors. Their key system uses GM Passlock / PK3 / PK3+ with Transponder, Smart Key. Buick uses GM's mainstream immobilizer technology. Most modern Buick models support aftermarket key programming through OBDII.
The 2026 Buick LaCrosse is a sedan. Most LaCrosse keys of this generation use the Hitag2 / Megamos AES transponder chip, remotes under FCC ID HYQ4EA, the HU100 key blade — exactly the hardware we cut and program on-site. For this sedan we handle spare keys, all-keys-lost recoveries, and remote replacement curbside — at your home, office, or roadside in Jacksonville.
Your 2026 Buick LaCrosse is a modern-era vehicle and uses the latest revision of Buick's key security platform. Programming requires advanced equipment but is fully aftermarket-supported on-site — no dealer trip needed in most cases.
Immobilizer (GM PK3+): GM's PK3+ has been refined since 2007 and is one of the easier mainstream platforms to program. Aftermarket coverage spans every Chevy, GMC, Buick, and Cadillac of the era.
In Jacksonville
Every Buick LaCrosse job we book in Jacksonville comes with the price quoted on the phone — no bait-and-switch and no after-hours surcharge unless explicitly disclosed before dispatch.
Ready to book your Buick LaCrosse key?