Chevrolet key replacement in San Marino

What do Chevrolet owners in San Marino usually call us about?

San Marino is almost entirely single-family homes on large lots, and the city's zoning allows essentially no apartment development. That shapes car-key calls more than you might expect. Without apartment garages, most Chevrolets here sleep in a private driveway, behind a gate, or at the curb of an estate street. So when a key goes missing, it usually goes missing at one of those places, or at the far end of an errand and a long drive home.

The requests tend to fall into a few groups. Someone has lost the only key to a Silverado, Tahoe or Suburban. A key that has worked for years suddenly sticks or refuses to turn. A hardware-store copy opens the door but will not start the engine. A smart fob reports 'no remote detected' on the dash because its battery has died. Or a flip key has snapped at the hinge and the owner wants a proper replacement before the next one fails.

We also hear from people who are already dealing with a house. When a home changes hands near San Marino High School, the locks usually get a full rekey, and the vehicle keys are the other loose end. We treat every one of these as its own problem, because the right fix depends entirely on which key system your Chevrolet uses.

How does mobile Chevrolet key service work at the curb?

You do not need to tow the car anywhere. Our mobile vans carry cutting and programming equipment, and we work where the vehicle sits: your driveway, the street outside your home, or a spot along the Mission Street business district. Our storefront is at 10740 Wilshire Blvd in Westwood, and San Marino is about 22 miles from that base, so we plan the trip rather than pretend it is next door. The phone is answered around the clock, every day of the year.

1. Call (213) 577-1366 and tell us the model, the model year, and what happened: lost key, broken key, dead fob, or a car that will not start.
2. We ask a few questions to work out which key system your Chevrolet likely uses, and whether you have any working key at all.
3. We confirm the details we need, such as the VIN and proof that the vehicle is yours, because we should only make keys for the person who owns the car.
4. A technician comes to the vehicle. If the key is cut by code or by the lock itself, we cut it on site. If it carries a chip, we program it to the car.
5. We test the new key on the door, in the ignition or start button, and on the remote functions, and we leave you with a key you have seen work.

Which Chevrolet key system does your truck or car use?

Chevrolet's key technology changed in four distinct eras, and the dividing lines differ by model. Knowing which era you are in tells you most of what you need to know about cost and process. Here it is in plain terms.

Exact changeover years are checked model by model, and a few of the 2021 to 2024 boundaries are genuinely disputed between parts catalogs. When your car sits near one of those lines, we confirm by VIN or by looking at the vehicle rather than guessing from the year.

• Passlock era, through the mid-2000s. Think GMT800 Silverado, Tahoe and Suburban (2000-2006), Impala (2000-2005), Malibu (2000-2003), first-generation Equinox (2005-2006) and first-generation Colorado (2004-2012). There is no chip in the key. The security sensor sits in the ignition lock cylinder, so a correctly cut key starts the vehicle with no programming.
• PK3+ 'circle-plus' era. These keys carry an ID46 transponder chip (Philips/NXP Hitag2). It arrived at different times by model: Malibu in 2004, Impala in 2006, GMT900 trucks and SUVs in 2007, Equinox in 2007.
• Global A era, roughly 2010 to 2015 and beyond. Chevrolet moved to Hitag2 Extended '46E' chips in remote-head keys, flip keys and the first proximity fobs. Examples include the Cruze (2011), Malibu (2013), Silverado (2014), Tahoe and Suburban (2015) and Colorado (2015).
• Global B era, 2021 onward. Redesigned vehicles such as the 2021 Tahoe and Suburban, the 2023 Colorado and the 2024 Traverse use NXP ID49 (Hitag Pro/AES) smart fobs.
• Newest 2025+ redesigns. One catalog lists the redesigned Equinox with Megamos AES ID88 keys. Catalogs disagree on that, so we treat it as unconfirmed until we have the vehicle in front of us.

What does programming involve on each type?

On Passlock-era Chevrolets, programming is not part of the job. We cut the key by code and it works. You may have heard of the 30-minute relearn, made of three 10-minute cycles. That only applies after an ignition cylinder or a module has been replaced, not for an ordinary key replacement.

PK3+ circle-plus vehicles support that same 30-minute onboard relearn for an all-keys-lost situation without special tools. Programming through the OBD port with professional equipment is much faster, so that is usually how we work.

Global A vehicles from roughly 2010 to 2020 are programmed through the OBD-II port with professional tools, and aftermarket coverage for all-keys-lost on them is mature. On 2021 and newer Global B vehicles, key programming is increasingly validated through GM's servers (ACDelco SPS2). That raises the bar on tools and credentials. The newest Megamos AES systems have immature aftermarket support and may be dealer-only or specialist-only for now. We tell you that on the phone if it applies to your car.

What if I have lost every key to my Chevrolet?

All keys lost is the situation most people dread, and it is more manageable than it sounds on many Chevrolets. On a Passlock-era truck or sedan, we can cut a new key by code or from the lock, and the car starts. On a PK3+ or Global A vehicle, we program new keys through the OBD port, and the aftermarket tooling for the Global A group is well established.

The honest complication is on the newest vehicles. On 2021+ Global B Chevrolets, all-keys-lost may require NASTF VSP-credentialed tooling or dealer service, depending on the tool. Coverage changes as tool makers update their software, so we confirm current coverage for your exact vehicle before we promise anything. If your Chevrolet falls into the dealer-only group, we will tell you plainly, and you will not pay for a trip that cannot finish the job.

If you only have one working key left, do not wait. Making a spare from a working key is a simpler job than starting from zero, and it is usually the more economical route. Our page on lost car key replacement in San Marino covers what to do in the first hour after a key disappears.

How much does Chevrolet key replacement cost in San Marino?

We will not quote a figure on a web page, because the same word 'Chevrolet' covers a plain cut key and a server-validated smart fob. What decides the cost is specific, and we walk through it on the phone:

• The key system. A Passlock key with no chip is a simple cutting job. A transponder key adds a chip and programming. A smart fob adds a more expensive part and more involved programming.
• Whether you have a working key. Copying an existing key is lighter work than all-keys-lost, which needs the key made from scratch and the car's immobilizer taught the new one.
• The tool and access situation. On newer vehicles, server-validated programming and credentialed access can add steps and cost.
• The key style you want. A basic remote-head key, a flip key and a proximity fob are different parts. A cracked shell on an otherwise good key may only need the internals moved.
• Where and when. The trip from our base and the hour you call can both factor in. We explain how before we head out.
• The condition of the lock. A worn ignition with tired wafers may need attention beyond the key.

Should I go to the dealer or call a locksmith?

Both are legitimate options, and neither is always right. A dealer can service almost any Chevrolet, and for the very newest redesigns, where aftermarket tools have not caught up, the dealer may be the only route. If your vehicle is in that category we will say so rather than take your call just to turn you away.

For most Chevrolets on the road, though, a mobile locksmith is the more practical choice. We come to the car, so you avoid a tow and a trip across town. On Passlock-era and Global A vehicles, we have the tools to do the whole job. We can often finish in a single visit without a parts order or an appointment queue.

Whoever you choose, ask for their license. California requires locksmith companies to hold a BSIS LCO license, and any honest locksmith should be willing to show it. We are adding our license number to this site, and in the meantime you can ask us directly on the phone.

Why call Wilshire Lock & Key?

We have been in business since 1987 and serve 140 cities across Los Angeles and Ventura counties. We are one company with a storefront in Westwood and our own mobile vans, not a call center that hands your job to whoever is closest. The person who answers the phone works for the same company as the technician who shows up.

David, the owner and lead technician, oversees the work. That matters on Chevrolets in particular, because the right method changes by model year, and the dealer-only cases need an honest answer up front. If you want to see the wider picture, our overview of Chevrolet keys explains the brand across the whole region, and car keys covers other makes.

Chevrolet key service across San Marino

We serve the whole city, ZIP code 91108, and the work looks different from one part of town to the next.

Around Lacy Park and the estate streets nearby, lockouts and lost keys tend to happen at the curb or in a driveway. If you are locked out rather than missing a key, see our car lockout service in San Marino. Along the Huntington Drive corridor, large fenced lots with gates and side doors mean a lost key can mean a lost gate and side-door key as well, and we can handle the door locks on the same visit when asked.

In the Mission District, around the Mission Street commercial area, the questions are about a vehicle parked near a storefront. Near the Huntington Library area and the El Molino Viejo (Old Mill) area, the service is the same, wherever you left the car. On the Oak Knoll border near Pasadena, tell us which side of the line you are on so we find the right address.

Older homes here still carry original 1920s and 1930s mortise locksets, and we service those too. Summer heat in this inland San Gabriel Valley setting can swell wood doors and throw old hardware out of alignment. That has nothing to do with your Chevrolet, but since we are already at your property, ask us. Our San Marino locksmith page lists everything we do in the city, and car key replacement in San Marino covers all makes.

Common Chevrolet key problems and what they mean

Some failures look like key problems but are not. A security light that stays on, with an engine that starts and then stalls even with a good key, points to a failed Passlock sensor on a 2000s model, not to the key. Replacing the key will not fix it, and we would rather say so than sell you one.

A key that sticks or stops turning on a high-mileage truck or sedan is often a worn set of ignition lock wafers. Dead smart-fob batteries are simpler: the dash says 'no remote detected', while the hidden emergency blade still opens the door. Low-quality cloned or aftermarket chips can fail intermittently, which is maddening, because the key works until it doesn't. If your fob is the issue, see key fob replacement in San Marino. To talk through your situation, you can also reach us through our contact page.

Chevrolet models in our key guide

• All Chevrolet keys
• Colorado
• Cruze
• Equinox
• Impala
• Malibu
• Silverado
• Suburban
• Tahoe
• Traverse