Same-day dispatch 20+ years serving Philadelphia & beyond Licensed · Bonded · Insured
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American Best Locksmith
Call us 877-340-3344
Domestic · Mobile automotive locksmith

GMC key replacement & programming — at your location.

Lost your GMC key, locked out, or need a programmed spare without a dealer trip? We come to your driveway, parking lot, or office across Philadelphia, South Jersey, Wilmington DE, and Houston and cut and program your replacement key on-site — no tow truck, no dealer appointment, typically half the dealer price. GMC Sierra, Yukon, Acadia, Terrain, Canyon — same GM platform as Chevrolet, premium-trim positioning, daily routine in our shop. Family-owned, on the road since 2007.

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Freshly programmed 2025 GMC Acadia smart key held in front of the red GMC emblem on the steering wheel airbag with the current-generation digital instrument cluster visible behind Recent job · GMC
2025 GMC Acadia smart key replacement on-site — current-gen Strattec proximity fob paired to the vehicle's BCM immobilizer. Same equipment we use across the GM family (Chevrolet, Buick, Cadillac).
Licensed & insured
Multi-state — PA, NJ, DE, TX
Same-day mobile
Avg ~25 min in-footprint
GMC specialists
Dealer-grade equipment in every truck
300+ reviews
Family-owned since 2007
Dealer vs. mobile locksmith

GMC key — dealer vs. us.

We do the same programming as the GMC dealer, with the same dealer-grade equipment, on-site instead of at the service drive.

GMC dealer
Us — mobile locksmith
Where it happens
DealerTheir service bay (often after a tow)
UsYour driveway, parking lot, or fleet yard
When it happens
DealerNext available appointment (1–7 days)
UsSame day — typically within hours
Tow truck needed?
DealerOften, if you can't drive the car in
UsNever — we come to the car
Total cost
DealerDealer key + tow + service-bay labor
Us~30–50% less, all-in
Service guarantee
If we can't make a key, you don't pay. If we can't successfully cut and program a working key, you owe us nothing — no service call fee, no dispatch fee, no parts. Period.
GMC services

GMC services we handle on-site.

Six core GMC jobs — driveway, parking lot, fleet yard. No tow.

1
Lost key replacement
All-keys-lost on your GMC, on-site. 30–60 min typical.
2
Spare key programming
Working key + VIN, 20–30 min, ~half the dealer price.
3
Smart key / proximity fob
Push-to-start, KEYLESS GO, Comfort Access — every GMC generation we cover.
4
Broken key extraction
Snapped in ignition or door lock — extracted on-site, fresh key cut.
5
Ignition cylinder repair
Worn or seized cylinder rebuilt or swapped, keyed to your existing GMC key.
6
Lockout / emergency entry
Keys locked in your GMC? Open without damage, plus cut a new one if needed.
Key technology

GMC key & immobilizer technology.

Most generic locksmiths can't program GMC — different brands run different immobilizer architectures and require platform-specific equipment. GMC's system has evolved across multiple generations, and each one changes what's possible. Find your model below.

GMC is the badge-engineered premium twin of Chevrolet — same six chip generations, same GM toolset we describe on the Chevrolet page. The shared platform means a GMC Sierra 1500 key IS a Chevy Silverado 1500 key with different fob casings and Denali / AT4 / SLT trim wraps. The shared platform also means the same resistor library covers Pass-Key Sonoma and Jimmy from the 1990s. Where GMC differs is the model lineup focus: heavier emphasis on full-size truck / SUV (Sierra HD, Yukon XL, Yukon Denali) and a smaller car footprint (no compact-sedan equivalent of Cruze / Malibu). The Hummer EV (2022+) and Sierra EV (2024+) are the GMC EV lineup on the GM Ultium platform — Smart Key push-to-start with EV-specific 12V auxiliary battery sensitivity that catches owners off-guard. Common GMC gotcha: 2003–2009 trucks (Sierra, Yukon) often present with worn ignition cylinders that fake 'won't start' on perfectly good keys — same issue as the Chevrolet equivalent. We test the cylinder first.

VATS / Pass-Key (Resistor Pellet)

First-Gen GM Anti-Theft
~1990–1996
Locksmith support ✅ Yes
All keys lost ✅ Yes
  • Shared GM platform — mechanical resistor pellet embedded in the key blade
  • BCM reads resistance value; one of 15 distinct codes; wrong resistance, no start
  • Sierra / C/K, Yukon, Suburban, Jimmy, S-15 / Sonoma, Syclone, Typhoon of this era
  • We carry the full resistor-blank library (all 15 codes) and the BCM-relearn equipment
Common chassis: Sierra C/K (1988–1996)Yukon (1992–1996)Suburban (1992–1996)Jimmy (1991–1996)Sonoma / S-15 (1991–1996)Syclone (1991)Typhoon (1992–1993)
Customer takeaway: VATS era — fully serviceable on-site. Resistor pellet keys cut and resistance-coded to your existing BCM value. Same toolset we use on Chevrolet of the same era.

Pass-Key III (Philips ID46)

Second-Gen GM Immobilizer
~1997–2002
Locksmith support ✅ Yes
All keys lost ✅ Yes
  • Pass-Key III — first electronic transponder on GMC using Philips ID46
  • Mechanical key blade + transponder head; PIN-from-VIN required
  • Sierra, Yukon, Yukon XL, Jimmy, Sonoma, Envoy (early), Savana of this era
  • Aftermarket-supported with GM-capable transponder equipment
Common chassis: Sierra (1999–2002)Yukon (2000–2002)Yukon XL (2000–2002)Jimmy (1997–2001)Sonoma (1997–2002)Envoy (1998–2002)
Customer takeaway: Pass-Key III era — fully serviceable on-site including all-keys-lost. Same toolset we use on Chevrolet of the same era.

ID46 Circle+ (B111 High-Security Blade)

Third-Gen GM Immobilizer
~2003–2009
Locksmith support ✅ Yes
All keys lost ✅ Yes
  • ID46 Circle+ transponder — B111 high-security blade era
  • OBD-based programming via GM-compatible scan tool
  • VIN-derived PIN required
  • Sierra, Yukon, Envoy, Acadia (early), Canyon, Savana of this era
Common chassis: Sierra (2003–2009)Yukon (2003–2009)Yukon XL (2003–2009)Envoy (2003–2009)Acadia (2007–2009)Canyon (2004–2009)Savana (2003–2009)
Customer takeaway: ID46 Circle+ era — fully serviceable on-site. Most common older-GMC platform on the road today.

ID46 GM EXT (B119 Blade)

Fourth-Gen GM Immobilizer
~2010–2018
Locksmith support ✅ Yes
All keys lost ✅ Yes
  • ID46 GM EXT transponder — B119 enhanced high-security blade
  • Encryption upgrade over Circle+; OBD-based programming
  • VIN-derived PIN required
  • Sierra, Yukon, Yukon XL, Acadia, Terrain, Canyon, Savana of this era
Common chassis: Sierra (2010–2018)Yukon / XL (2010–2018)Acadia (2010–2017)Terrain (2010–2017)Canyon (2015–2018)Savana (2010–Present, fleet)
Customer takeaway: ID46 GM EXT era — fully serviceable on-site. Most common mid-life GMC platform; B119 blade cut and programmed to your VIN in 25–40 min.

HU100 High-Security (ID46 GM EXT)

Highest-Security GMC Transponder
~2019–2024
Locksmith support ✅ Yes
All keys lost ✅ Yes
  • HU100 high-security keyway — current GMC transponder family with ID46 GM EXT chip
  • Used on Sierra, Yukon, Canyon base trims when not equipped with Smart Key
  • VIN-derived PIN required, extracted in-truck
Common chassis: Sierra base/Pro (2019–2024)Canyon WT/Elevation base (2019–2022)Yukon SLE (2019–2024)
Customer takeaway: HU100 era — fully serviceable on-site. Standard transponder programming for trim levels without Smart Key.

GMC Smart Key (Push-to-Start Proximity)

Current GMC Proximity Platform
~2021–Present
Locksmith support ✅ Yes
All keys lost ✅ Yes
  • GMC Smart Key — proximity entry + push-to-start fob
  • BCM programming required via OBD; PIN-from-VIN extraction
  • Used across the lineup including Sierra SLE/SLT/Elevation/AT4/Denali/Denali Ultimate, Yukon SLT/AT4/Denali/Denali Ultimate, Acadia SLT/AT4/Denali, Terrain SLT/AT4/Denali, Canyon Elevation/AT4/Denali, Hummer EV / EV SUV, Sierra EV
  • Programming is OBD-based; fob shells are aftermarket-supported across the platform
  • Hummer EV / Sierra EV use Ultium platform — 12V check first on every dispatch
Common chassis: Sierra SLT / AT4 / Denali (2019–)Yukon Denali (2021–)Acadia DenaliTerrain DenaliCanyon AT4 / DenaliHummer EV (2022–)Hummer EV SUV (2024–)Sierra EV (2024–)
Customer takeaway: Current Smart Key push-to-start GMC — fully serviceable on-site. Spare keys 25–40 min; all-keys-lost 30–60 min. Hummer EV / Sierra EV 12V check first.

At-a-glance coverage summary

System Years Locksmith Support All Keys Lost
VATS / Pass-Key (Resistor Pellet) ~1990–1996 ✅ Yes ✅ Yes
Pass-Key III (Philips ID46) ~1997–2002 ✅ Yes ✅ Yes
ID46 Circle+ (B111 High-Security Blade) ~2003–2009 ✅ Yes ✅ Yes
ID46 GM EXT (B119 Blade) ~2010–2018 ✅ Yes ✅ Yes
HU100 High-Security (ID46 GM EXT) ~2019–2024 ✅ Yes ✅ Yes
GMC Smart Key (Push-to-Start Proximity) ~2021–Present ✅ Yes ✅ Yes
GMC model pricing

What it costs for your specific GMC.

Year-banded pricing for our most-requested GMC models. All-in on-site — blank, cutting, programming, dispatch. Final price confirmed on the phone with your VIN before we leave the shop.

Sierra 1500 6 year ranges
Year1988–1996 (GMT400)
Key systemVATS resistor pellet
Price range$90–$160
On-site15–25 min
NoteAKL supported; 15-resistor library
Year1999–2002 (GMT800 early)
Key systemPass-Key III ID46
Price range$140–$220
On-site20–30 min
NoteAKL supported
Year2003–2009 (GMT800/900)
Key systemID46 Circle+ (B111)
Price range$160–$250
On-site25–35 min
NoteAKL supported
Year2010–2018 (K2XX)
Key systemID46 GM EXT (B119)
Price range$170–$280
On-site25–40 min
NoteAKL supported (Denali same)
Year2019–2024 (T1XX)
Key systemHU100 / Smart Key (SLT+)
Price range$190–$340
On-site25–40 min
NoteAT4 / Denali use Smart Key
Year2025+ (current)
Key systemSmart Key (current)
Price range$220–$400
On-site30–45 min
NoteConfirm trim with VIN
Sierra 2500HD / 3500HD 4 year ranges
Year1999–2007 (1st-2nd gen HD)
Key systemPass-Key III / Circle+
Price range$140–$240
On-site20–30 min
NoteAKL supported
Year2007–2014 (3rd gen HD)
Key systemID46 Circle+ / GM EXT
Price range$170–$280
On-site25–40 min
NoteAKL supported
Year2015–2019 (4th gen HD)
Key systemID46 GM EXT (B119)
Price range$180–$300
On-site25–40 min
NoteDenali HD same
Year2020+ (5th gen HD)
Key systemHU100 / Smart Key
Price range$210–$380
On-site30–45 min
NoteDenali Ultimate same
Yukon / Yukon XL / Yukon Denali 4 year ranges
Year1992–2002 (GMT400 / GMT800 early)
Key systemVATS / Pass-Key III
Price range$130–$220
On-site20–30 min
NoteAKL supported
Year2003–2009 (GMT900)
Key systemID46 Circle+ (B111)
Price range$160–$260
On-site25–35 min
NoteDenali same
Year2010–2020 (K2XX)
Key systemID46 GM EXT (B119)
Price range$180–$300
On-site25–40 min
NoteDenali same
Year2021+ (T1XX, current)
Key systemSmart Key (current)
Price range$220–$400
On-site30–45 min
NoteAT4 / Denali / Denali Ultimate same
Acadia 4 year ranges
Year2007–2009 (1st gen early)
Key systemID46 Circle+ (B111)
Price range$160–$260
On-site25–35 min
NoteAKL supported
Year2010–2016 (1st gen late)
Key systemID46 GM EXT (B119)
Price range$170–$280
On-site25–40 min
NoteAKL supported
Year2017–2023 (2nd gen)
Key systemID46 GM EXT / Smart Key
Price range$190–$340
On-site25–40 min
NoteDenali same
Year2024+ (3rd gen)
Key systemSmart Key (current)
Price range$220–$400
On-site30–45 min
NoteAT4 / Denali same
Terrain 3 year ranges
Year2010–2017 (1st gen)
Key systemID46 GM EXT (B119)
Price range$170–$280
On-site25–40 min
NoteDenali same
Year2018–2024 (2nd gen)
Key systemID46 GM EXT / Smart Key
Price range$190–$340
On-site25–40 min
NoteDenali same
Year2025+ (3rd gen)
Key systemSmart Key (current)
Price range$210–$380
On-site30–45 min
NoteAT4 / Denali same
Canyon 3 year ranges
Year2004–2012 (1st gen)
Key systemID46 Circle+ (B111)
Price range$160–$260
On-site25–35 min
NoteAKL supported
Year2015–2022 (2nd gen)
Key systemID46 GM EXT (B119)
Price range$170–$280
On-site25–40 min
NoteAT4 / Denali same
Year2023+ (3rd gen)
Key systemSmart Key (current)
Price range$200–$360
On-site30–45 min
NoteAT4 / Denali same
Hummer EV / Sierra EV (Ultium Platform) 3 year ranges
YearHummer EV pickup 2022+
Key systemSmart Key (Ultium)
Price range$240–$420
On-site30–45 min
NoteEV; 12V check first
YearHummer EV SUV 2024+
Key systemSmart Key (Ultium)
Price range$240–$420
On-site30–45 min
NoteEV; 12V check first
YearSierra EV 2024+
Key systemSmart Key (Ultium)
Price range$240–$420
On-site30–45 min
NoteEV; Denali Edition 1 same
Older / Discontinued Lineup (Jimmy / Sonoma / Envoy / Savana) 4 year ranges
YearJimmy 1991–2005
Key systemVATS / Pass-Key III / Circle+
Price range$110–$240
On-site15–30 min
NoteAKL supported; year confirms chip
YearSonoma / S-15 1991–2004
Key systemVATS / Pass-Key III
Price range$110–$220
On-site15–25 min
NoteAKL supported; 15-resistor library
YearEnvoy 1998–2009
Key systemPass-Key III → Circle+
Price range$140–$260
On-site20–35 min
NoteDenali / XL same
YearSavana 1996–Present (van)
Key systemPass-Key → ID46 progression
Price range$140–$280
On-site20–35 min
NoteFleet volume; year confirms chip

Don't see your exact model or year? Call us with your VIN — we cover every GMC model on the road, and a 30-second VIN check confirms the chip type and price before dispatch.

Hybrid & EV — read this first

If you drive a GMC hybrid or EV.

GMC's EV lineup on the new Ultium platform — Hummer EV pickup (2022+), Hummer EV SUV (2024+), Sierra EV (2024+) — uses the standard GMC Smart Key push-to-start with EV-specific 12V auxiliary battery management. The 12V battery on these EVs is separate from the high-voltage propulsion pack and is the most common cause of 'intermittent fob' symptoms that look like a key problem. We test the 12V FIRST on every Hummer EV / Sierra EV call before quoting key work. Charge-port behavior (CCS / NACS adapter) doesn't affect key programming. The CrabWalk and Watts to Freedom modes on Hummer EV are software features layered on top of the standard Smart Key — no special key handling required.

Common problems

Common GMC key problems & what we do about them.

Before you assume you need a new key, here's what usually goes wrong with GMC keys — and how we diagnose before charging.

Why is my GMC Smart Key not detected?

Most common (in this order): dead CR2032 fob battery — a $3 replacement we do in 60 seconds; weak 12V vehicle battery (especially on Hummer EV / Sierra EV); fob desync after a 12V battery service; or a failing BCM antenna. We diagnose first — a new key won't fix any of these except the last.

I lost both GMC keys — can a locksmith really do all-keys-lost on-site?

Yes. All-keys-lost on GMC 1996 to current is routine for us. We pull the immobilizer PIN from your VIN, connect to the OBD2 port, talk to the BCM, generate the key file, cut to your VIN, program. 30–60 min typical. Bring proof of ownership and your VIN.

My Sierra / Yukon push-to-start intermittent — is it the key or the truck?

Almost always one of three things: dead CR2032 in the fob, marginal 12V battery (cold weather GM trucks especially), or fob desync after a battery service. We test all three before quoting key work. Same diagnostic approach as Silverado / Tahoe — they're the same platform.

My older Sonoma / Jimmy with Pass-Key cranks but won't start — bad key or BCM?

Usually the resistor pellet in the key has worn out (these resistors degrade after 10–20 years) or the BCM lost its learned value after a battery disconnect. We test the resistor reading first, replace the key if degraded, re-teach the BCM if needed. $50 key beats a $400 BCM.

GMC process

From your call to a working GMC key.

Five steps. Flat-quote on the phone, no upsells when we arrive.

1
Call & quote
Tell us year, model, and VIN. We confirm the immobilizer generation and quote a flat all-in price on the phone.
2
Dispatch
Tech rolls with the right GMC-generation blank and equipment, plus your VIN-specific key file pre-loaded.
3
ID & cut
Verify proof of ownership, cut the blade to your VIN code. Quick.
4
Program
Pair the new key to your GMC's immobilizer; test start, locks, panic, trunk.
5
Drive away
Drive away with a working GMC key, written invoice, warranty.
Service area

GMC mobile locksmith — across our footprint.

We service GMC owners across our four metros. Same-day mobile dispatch during service hours, dealer-grade equipment in every truck.

Philadelphia, PA
GMC keys across Center City, Northeast Philly, the Main Line, and surrounding PA suburbs.
South Jersey
GMC keys across Cherry Hill, Camden, Voorhees, Marlton — same-day from our Camden HQ.
Wilmington, DE
GMC mobile service across Wilmington, Newark DE, and northern Delaware. Local DE line, dispatched from Philly hub.
Houston, TX
GMC keys across Houston metro — Inner Loop, Energy Corridor, Sugar Land, Katy, The Woodlands.
FAQ

Common GMC questions.

What chip does my GMC use — VATS, Pass-Key III, ID46, or Smart Key?

Same as Chevrolet (GM platform shared): 1990–1996 = VATS / Pass-Key resistor pellet; 1997–2002 = Pass-Key III with Philips ID46; 2003–2009 = ID46 Circle+ with B111 blade; 2010–2018 = ID46 GM EXT with B119 blade; 2019–2024 = HU100 high-security; 2021+ = Smart Key push-to-start. Tell us year and trim — we confirm the exact chip from your VIN before dispatch.

Are GMC and Chevrolet keys interchangeable?

From a programming standpoint, yes — Sierra 1500 and Silverado 1500 share the platform, Yukon and Tahoe share the platform, Canyon and Colorado share the platform. The key blanks are physically the same; the VIN tells us which trim and which programming path. We use the same toolset on both brands.

Do you do GMC Sierra Denali smart keys?

Yes — Denali trims use the same smart-key fobs as the rest of the GMC platform with cosmetic differences (real wood inlays on some, premium leather wrap). Programming is identical to other Sierra trims. 25–40 min on-site typical for spares.

Can you handle the Hummer EV / Sierra EV electronic key system?

Yes — current Hummer EV, Hummer EV SUV, and Sierra EV use the GM Ultium-platform Smart Key. Programming is OBD-based with dealer-grade equipment. Note: 12V battery sensitivity is real on these — we test 12V FIRST. Call with VIN before dispatch on 2024+ Sierra EV / Hummer EV.

Need a GMC key today?

A real licensed locksmith answers — not a call center. Tell us year, model, and VIN; we quote you flat on the phone and roll same-day.

Call 877-340-3344 Get a quote →
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Other domestic brands we service.

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Ready when you are

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A real person answers — not a call center. Tell us whether it's a car key, a home rekey, or a commercial install, and we'll send the right tech with the right tools.

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