Treasure Coast Locksmith provides Chevy key replacement services in Port St. Lucie, Stuart, Fort Pierce, Vero Beach, Jensen Beach, and across the Treasure Coast. Call (772) 758-1322 for mobile service. Chevy uses two main immobilizer systems: PassKey III (2005-2015) and modern PassLock/HitagAES (2016+). Treasure Coast Locksmith programs all Chevy models onsite with Autel IM608 Pro. Typical $175-$315 versus $325-$485 at Chevy dealer.
Chevy is GM's most common brand on the Treasure Coast, with Silverado trucks dominating the commercial and residential truck market. Malibu, Tahoe, Suburban, Equinox, and Traverse are also common family vehicles. Chevy has used several immobilizer systems over the years - understanding which applies to your specific vehicle determines programming time and cost.
PassKey III (2005-2015 for most models) uses a transponder chip in the key head plus an additional security code stored in the BCM (Body Control Module). This two-layer security was sophisticated for its time and is still secure today. Modern Chevys (2016+) use PassLock with HitagAES encryption, which requires more advanced programming equipment but is otherwise similar in concept.
Treasure Coast Locksmith programs every Chevy model from 1998 through 2026. Autel IM608 Pro handles PassKey III and PassLock HitagAES efficiently. Typical Chevy job runs 30-60 minutes onsite. 
Chevy programming the right way
- $175-$315 typical cost - versus $325-$485 at Chevy dealerships.
- PassKey III and PassLock - all Chevy immobilizer systems.
- Mobile onsite programming - no tow to Chevy dealer.
- Smart key support - Silverado 2015+, Tahoe 2015+, Suburban 2015+.
- All Chevy models - Silverado, Malibu, Tahoe, Equinox, Traverse, Camaro, Corvette.
- Autel IM608 Pro equipment - professional GM programming tools.
- Commercial fleet service - bulk programming for Treasure Coast work trucks.
- Same-day service - most jobs finish the day they're booked.
Real Chevy scenarios
Common Chevy owner situations we handle.
Typical Chevy problems
- 2022 Silverado owner lost only working smart key at Port St. Lucie job site. Dealer quoted $450 plus tow. We programmed onsite for $285 in 45 minutes.
- 2018 Chevy Malibu with PassKey III chip failure. Replaced chip in existing fob housing for $195.
- 2015 Chevy Tahoe smart key battery dead. Replaced battery, tested proximity start.
- 2020 Chevy Suburban smart key destroyed in pool. Replaced fob housing and reprogrammed for $295.
- 2012 Chevy Silverado with worn ignition cylinder that would not accept new key. Replaced cylinder, programmed PassKey III.
- 2021 Chevy Equinox all-keys-lost situation after theft. Reset BCM, programmed new smart key set.
- 2017 Chevy Camaro with PassLock key that stopped recognizing. Diagnosed as BCM learn issue, reset and reprogrammed.
- 2019 Chevy Traverse smart key fob water damage from rainstorm. Cloned chip into fresh fob shell.
Chevy PassKey III versus modern PassLock
GM's PassKey III system (used across Chevy, GMC, Cadillac, Buick from 2005-2015) uses a transponder chip that stores a unique 40-bit security code. When you turn the key, the immobilizer reads the chip and verifies the code against its stored value. If it matches, the engine starts.
The security code can only be programmed through OBDII with the proper procedure.
Modern Chevys (2016+) use PassLock with HitagAES encryption. HitagAES is a stronger cipher that prevents the known vulnerabilities in earlier PassKey generations. Programming is similar in concept - you authenticate with the BCM, add the new key's encrypted data, and verify.
But the equipment requirements are more stringent and the procedure takes slightly longer.
For Chevy smart keys (2015+), the programming is more complex because the smart key has both an RF fob for proximity and a transponder chip for immobilizer. Both have to be programmed in parallel. Smart key programming typically takes 5-10 minutes longer than transponder key programming for the same model year.
Our Autel IM608 Pro handles both PassKey III and modern PassLock through the standard Chevy programming procedure. For the rare case where the OBDII procedure fails, we have Xhorse VVDI Key Tool Plus and Smart Pro as backups. Chevy-specific quirks we know: 2014-2015 Silverado sometimes needs BCM reset before programming.
2019+ Malibu has a known intermittent programming issue that we work around. 2021+ Tahoe Premier trim requires specific smart key variant that other trims don't use. 
How Chevy key replacement works
Phone call
Call (772) 758-1322 with your Chevy's year, model, and key situation.
Quote and dispatch
Flat-rate phone quote. Technician dispatched with appropriate Chevy equipment.
Onsite programming
Technician arrives, verifies VIN, cuts blade, programs PassKey III or PassLock.
Test and handoff
Engine start test, fob function test, written warranty documentation.
Chevy owner tips
- For Chevy work trucks (Silverado HD, Colorado ZR2), program 3-4 keys initially for fleet operations.
- Chevy smart key batteries last 2-3 years - replace using CR2032 lithium when notification appears.
- PassKey III chips can interfere with each other in proximity - keep Chevy keys separated by 6+ inches.
- Never put a Chevy key in a pocket with a cell phone - RF interference can cause intermittent start issues.
- For fleet vehicles, document the VINs and key counts so future programming goes faster.
- Chevy Silverado 2007-2013 has a common ignition cylinder wear problem - watch for sticky key operation.
Related services
Other Treasure Coast Locksmith services in this cluster.
Chevy key replacement FAQs
Common questions from Treasure Coast Chevy owners.
How much does Chevy key replacement cost?
Chevy transponder key (Silverado, Malibu, Tahoe, Equinox 2005-2014) runs $175 to $255. Chevy smart key/proximity (2015+) runs $255 to $365. Compare to Chevy dealer pricing of $325 to $485+.
All jobs include mobile service, programming, cutting, and written warranty.
Do you program GM Silverado work truck keys?
Yes. Silverado, Silverado HD, Colorado, and Sierra work trucks are our daily work. For commercial fleets we offer bulk pricing and can program multiple keys per visit.
Some Treasure Coast contractors have standing service agreements for fleet key management.
Can you program a 2023 Chevy Silverado EV key?
Yes. 2022-2026 Silverado EV uses the same PassLock programming system as internal combustion Silverados but with additional battery management system integration. Programming takes slightly longer (50-75 minutes) due to the EV-specific module checks.
How long does Chevy programming take?
PassKey III transponder with working key: 20-35 minutes. PassKey III all-keys-lost: 35-55 minutes. PassLock smart key with working key: 30-50 minutes.
PassLock all-keys-lost: 45-75 minutes. Total appointment time typically 60-105 minutes including drive and testing.
Will your Chevy key work as well as the dealer's?
Yes. We program the same OEM key data that the dealer uses. The only difference is we program it onto aftermarket fob shells, which look and function identically to OEM but cost less.
The chip inside is the same OEM part number.
Can you clone a Chevy PassKey III?
Sometimes. Some PassKey III chips can be cloned with Smart Pro or specific Xhorse equipment. Cloning takes 10-15 minutes versus 20-35 minutes for full programming.
For modern PassLock (2016+), cloning is not possible - full programming is required.
What if my Chevy key turns but won't start?
Classic PassKey III failure - the mechanical cylinder is fine but the chip or BCM isn't recognizing the security code. Usually fixed by reprogramming the existing key or cutting and programming a fresh one. We diagnose onsite with our equipment.
Does Chevy require a PIN code for programming?
For some 2019+ Chevy models, yes. The PIN is a 4-digit code stored in the BCM that authorizes key programming changes. We retrieve the PIN via VIN lookup through our Autel system.
For older Chevys (pre-2019), PIN is not required.
Can you program an older Chevy with no working keys?
Yes. All-keys-lost programming for older Chevys (1998-2010) typically involves removing the BCM, reading the stored security code directly, and programming new keys to match. Takes longer (45-90 minutes) but always works.
For 2011+ models, OBDII procedures are usually faster.
Do you service Chevy Corvette keys?
Yes. Corvette uses the same GM programming systems as other Chevys. C6 (2005-2013), C7 (2014-2019), and C8 (2020+) all programmable with our equipment.
C8 mid-engine Corvettes have specific programming quirks we know about. Typical Corvette job: 45-60 minutes onsite.
Can Treasure Coast locksmiths do Chevy Tahoe and Suburban smart keys?
Yes. Tahoe and Suburban smart keys (2015+) are standard work for us. These SUVs are very common on the Treasure Coast and we program them weekly.
2021+ Tahoe Premier trim requires a specific smart key variant that we stock.
Will you program a used Chevy key?
Yes. Used key programming works for most Chevy models. We erase the key's existing data (if any) during programming so it becomes a fresh key for your vehicle.
Used keys can save money if you have one from a junkyard or a previous vehicle of the same model.