You walk out to your truck, reach into your pocket, and nothing. Or the fob clicks but the doors don’t budge. Maybe the key broke off in the ignition, or you’ve simply lost the only key you had. If you drive a Chevrolet, GMC, Buick, or Cadillac — and you’re somewhere in Phoenix, Scottsdale, Chandler, Gilbert, or anywhere across Maricopa County — Sundial Locksmith is the call that gets you moving again. We specialize in Chevrolet GMC Buick Cadillac car key replacement and we show up with the right equipment to cut, program, and verify your new key on the spot, no dealership appointment required.
General Motors vehicles built from 2000 onward use some of the most sophisticated key and transponder systems on the road. That’s a good thing for security — but it means a random key cut from a hardware store won’t start your engine. You need a locksmith who actually understands GM’s PASS-Key III, PATS equivalents, rolling-code fobs, and the newer proximity systems in late-model Cadillac and Buick vehicles. That’s exactly what we bring to every call.
One Call. One Visit. Your GM Key Cut and Programmed on the Spot.
The old way of replacing a lost GM key meant a tow to the dealership, a wait of one to three days, and a bill that felt like a car payment. We’ve changed that. Our mobile units are stocked with professional-grade key-cutting machines and OBD-level programming tools that communicate directly with your vehicle’s ECU — the same way a dealer does, but without the overhead or the wait. Whether you’re in a parking garage in Old Town Scottsdale, a driveway in Gilbert, or a job site in North Phoenix, we come to you.
And if you’ve lost all of your keys — no spare, no fob, nothing — we handle that too. All keys lost situations are one of our most common calls, and we’re equipped to originate a brand-new key for your GM vehicle without an existing working key. For more on what that process looks like and what to expect, see our guide: 4 Things to Know If You Have Lost Your Car Keys.
GM Brands and Models We Service
We work with the full General Motors lineup — passenger cars, trucks, SUVs, and crossovers — across all four core brands. Here’s what that covers:
Chevrolet Key Replacement
- Silverado 1500, 2500HD, 3500HD — Work trucks are working keys. We program remote head keys, standard transponders, and push-to-start proximity fobs for all Silverado generations.
- Equinox & Traverse — Popular family SUVs with GM’s passive entry systems. We handle full fob and smart key replacement.
- Tahoe & Suburban — Full-size SUVs used by families and fleets alike. Lost key or broken fob, we’ve got it covered.
- Colorado — Mid-size truck with transponder and remote systems depending on year.
- Malibu, Impala, Cruze & Spark — Sedans and compact cars, including older PASS-Key III systems and newer remote start fobs.
- Blazer & Trax — Newer crossover lineup with proximity entry and push-button start.
- Camaro & Corvette — Performance vehicles with high-security key systems we’re fully equipped to program.
GMC Key Replacement
- Sierra 1500, 2500HD, 3500HD — Same capable platform as the Silverado with the same programming needs. We handle both.
- Yukon & Yukon XL — Large family and fleet SUVs. We program all key types including keyless entry remotes and proximity fobs.
- Terrain & Acadia — Mid-size crossovers with GM’s evolving fob and smart key systems.
- Canyon — GMC’s mid-size truck, often used for both work and daily driving.
- Envoy (older models) — We still service these. Older GM transponder systems are well within our capabilities.
Buick Key Replacement
- Enclave — One of the most popular Buick models. Smart key and proximity entry programming done on-site.
- Encore & Encore GX — Compact crossovers with push-button start systems. We program these correctly the first time.
- Envision & Envista — Newer models in Buick’s lineup with current-generation key fob systems.
- LaCrosse & Verano — Sedans with mid-range GM transponder and remote systems.
- Regal — Performance-tuned sedan. Key programming handled with the same precision we apply to every vehicle.
Cadillac Key Replacement
- Escalade & Escalade ESV — The flagship Cadillac SUV. Proximity key programming, smart fobs, and full keyless entry restoration — handled professionally.
- XT4, XT5, XT6 — Cadillac’s crossover lineup with push-button start and advanced proximity systems.
- CT4 & CT5 — Sport sedans with high-security key programming requirements we meet on every call.
- ATS & CTS — Classic Cadillac performance sedans. We support all years and key system generations.
- SRX — A long-running Cadillac crossover we still get calls about regularly.
Why GM Key Programming Is Not a DIY Job
General Motors has used several generations of immobilizer and transponder technology across their lineup. From the PASS-Key III resistor pellet systems in early 2000s vehicles, to the rolling-code remote systems in mid-2000s trucks, to the current passive entry and push-to-start platforms in late-model Cadillac and Buick vehicles — each generation requires different tools, different software, and a technician who knows what they’re doing.
A transponder programming error on a GM vehicle doesn’t just mean the key won’t start the car. It can trigger the anti-theft system, lock the ECU into a security timeout, or require a dealer-level reset before the vehicle will accept any new programming at all. We’ve seen it happen when vehicle owners try cheap third-party solutions or call a locksmith who isn’t equipped for the job. That’s a frustrating and expensive situation — one we help people avoid every day.
“We showed up with a dead fob and no spare. They programmed a new key on-site in under 45 minutes. My Tahoe started on the first try and I made it to my meeting. That’s exactly what I needed.”
— Customer, Scottsdale, AZ
When you call a locksmith who isn’t prepared for GM’s systems, you risk leaving in the same position you started — or worse. We think it’s worth knowing how to spot the difference. Our article on locksmith fraud and scams is a helpful read before you call anyone for this kind of work.
How We Handle Chevrolet GMC Buick Cadillac car key replacement — Our Process
We keep the process simple because your time matters. Here’s what happens from the moment you call:
- You call us at (480) 525-7778. We ask for your vehicle’s year, make, model, and your location. That’s enough for us to confirm we have the right blank and software profile loaded before we leave.
- We dispatch to your location. Whether you’re stranded in a Mesa parking lot, at home in Paradise Valley, or at a commercial fleet yard in Chandler, we come to you. No towing required.
- We verify your identity and ownership. We’ll ask for your ID and registration or title. This is non-negotiable — it protects you as much as it protects us, and it’s the mark of a professional operation.
- We cut the key to your vehicle’s specific key code. Using professional blade-cutting or laser-cutting equipment depending on your model, we produce a mechanically accurate key.
- We program the transponder or smart key. Using OBD-level programming tools, we pair the new key to your vehicle’s ECU. For proximity fobs and push-to-start systems, we complete the full pairing sequence and verify remote lock, unlock, and panic functions.
- We test everything before we leave. The key starts the car. The fob locks and unlocks the doors. The anti-theft light behaves normally. We don’t pack up until the job is fully verified.
We Serve All of Maricopa County — Including These Communities
Our service area covers the full spread of Maricopa County. If you’re in Phoenix, Scottsdale, Paradise Valley, North Scottsdale, Old Town Scottsdale, Chandler, Tempe, Gilbert, Mesa, Cave Creek, or North Phoenix — we’re your local GM key specialist. We also regularly serve fleet managers and dealership service departments across the valley who need a reliable locksmith they can call without micromanaging the outcome.
For fleet and dealership inquiries, or if you need key services for other vehicle makes, visit our full automotive locksmith services page or browse our complete car key replacement service overview to see everything we offer across all makes.
Need keys for a different brand? We also specialize in Toyota & Lexus car key replacement and Ford, Lincoln & Mercury car key replacement — all with the same on-site programming capability.
You can learn more about the General Motors vehicle lineup and its history on Wikipedia’s GM vehicle reference pages.
Frequently Asked Questions
Can you replace my GM key if I have no working key at all?
Yes. All keys lost situations are common, and we handle them regularly. We originate a new key from your vehicle’s key code — which we pull from the VIN or by decoding the lock — and program it fresh to your ECU. You don’t need a working key for us to produce one.
Will my anti-theft light stay on after key programming?
If the programming is done correctly, the anti-theft indicator should behave normally after a brief initialization cycle. If it stays on solid after the car starts, that’s a sign of a transponder programming error or an incomplete pairing — something we watch for and resolve before we leave your location.
Is it worth going to the dealership instead?
For most 2000-and-newer GM vehicles, the answer is no — not if you want faster service and comparable quality. Dealers use the same OBD programming interfaces we use. The difference is we come to you, we don’t have a service queue ahead of you, and we don’t charge dealership overhead. The key works the same either way.
Do you program GM proximity fobs and push-to-start systems?
Yes. Late-model Cadillac, Buick, Chevrolet, and GMC vehicles with keyless entry and push-to-start use proximity key systems that require full ECU pairing — not just a physical cut. We handle these with the same on-site equipment and verify the complete function before we leave.
What if my fob battery died — is that all it is?
Sometimes, yes. A dead fob battery is the most common reason a push-to-start GM vehicle won’t respond to the fob. Most GM vehicles with push-to-start have a backup start method using the physical key blade or a specific spot to hold the fob near the start button. If a fresh battery doesn’t solve it, the fob may need reprogramming — and we can handle that on-site.
Ready to Get Back on the Road? Call Sundial Locksmith Now.
Being stranded with a dead key or no key at all is stressful. It’s worse in Phoenix summer heat, and it’s worse when you’re not sure who to call. We’re the team that shows up prepared, gets the job done correctly, and leaves you with a key that works — every time. Whether you drive a Silverado, an Escalade, a Buick Enclave, or a GMC Yukon, we have what it takes to get you moving today.
Sundial Locksmith serves Phoenix, Scottsdale, Paradise Valley, North Scottsdale, Old Town Scottsdale, Chandler, Tempe, Gilbert, Mesa, Cave Creek, North Phoenix, and all of Columbus, OH and Maricopa County.
