Chevrolet & GMC Key Replacement + Theft-Deterrent Relearn — Annetta TX
Chevrolet and GMC key replacement plus theft-deterrent relearn in Annetta TX. How GM PassKey and immobilizer keys work, costs, mobile service.
Chevrolet & GMC Key Replacement + Theft-Deterrent Relearn — Annetta TX
Chevrolet and GMC vehicles — Silverado, Sierra, Tahoe, Suburban, Equinox, Malibu, and more — are workhorses across Parker County. General Motors has used several generations of anti-theft technology, from the early PassKey resistor systems to modern transponder and proximity keys with theft-deterrent relearn procedures. This guide explains how GM immobilizer keys work, what replacement costs, and how we handle the relearn on-site. Call or text (817) 813-9396 for Chevy and GMC key service in Annetta, Weatherford, Aledo, and Fort Worth.
Quick Answer: Chevrolet & GMC Key Replacement
Most modern Chevrolet and GMC keys contain a transponder chip (or a proximity fob on push-to-start models) that the vehicle's immobilizer must recognize. Replacing a GM key involves cutting the mechanical blade and performing the theft-deterrent relearn — a procedure that enrolls the new key into the anti-theft system. Some older GM vehicles used the VATS/PassKey resistor-pellet system, which is mechanical-electrical rather than a chip. We identify which system your vehicle uses and handle the correct process.
Chevrolet & GMC Key Replacement Pricing in Annetta TX
| GM Key Type | Typical Price Range | Notes |
|---|---|---|
| Older PassKey / VATS key | $90–$180 | Resistor-based, older cars |
| Transponder key / flip key | $120–$240 | Common on 2010s Chevy and GMC |
| Remote-head key with relearn | $150–$280 | Combined key and remote |
| Proximity smart key (push-to-start) | $200–$400 | Later trucks and SUVs |
| All keys lost (any GM) | $180–$450+ | Higher labor and access |
Disclaimer: Ranges only, not quotes. Final price depends on exact model, key type, parts, and travel. Call or text (817) 813-9396 for a quote.
GM Anti-Theft Systems Explained
VATS / PassKey (Older Vehicles)
Early GM anti-theft keys carried a small resistor pellet in the blade. The ignition read the pellet's resistance value and would only start if it matched. These systems don't use a transponder chip, but they still require the correct key blank and resistance value.
PassLock and Transponder Systems
Later GM vehicles moved to PassLock (a sensor in the lock cylinder) and then to true transponder keys, where a chip communicates with the Body Control Module. Replacing these keys requires the theft-deterrent relearn so the BCM accepts the new key.
Keyless / Proximity Systems
Push-to-start Chevrolet and GMC models use proximity fobs. The fob is programmed to the vehicle and the emergency blade inside it is cut to the door lock. All-keys-lost on these platforms takes additional time.
The Theft-Deterrent Relearn
The relearn is the step that teaches your Chevy or GMC to trust a new key or fob. On many GM vehicles this is an on-board timed procedure combined with programming equipment; on others it requires a scan tool to communicate with the BCM and immobilizer. The Body Control Module is central to GM security, which is why BCM issues can cause no-start and security-light problems — more on the electronics in our module programming overview.
Common Chevrolet & GMC Models We Service
- Silverado and Sierra — the trucks we service most; transponder and proximity variants
- Tahoe, Suburban, Yukon — remote-head keys and later proximity fobs
- Equinox, Traverse, Acadia — mix of flip keys and proximity
- Malibu, Impala, Cruze — transponder and remote-head keys
- Colorado and Canyon — flip keys and proximity depending on year
Add-a-Key vs. All Keys Lost on a GM
With one working key, adding a spare and running the relearn is usually quick. With all keys lost, the mechanical cut must be generated from the vehicle and the anti-theft system accessed and re-initialized, which is more involved. See the all keys lost guide for the full process.
Why Call a Mobile Locksmith for a GM Key
Because a GM key programs to the vehicle, a dealer job usually means towing the car in (it won't start) and paying dealer rates. Our mobile unit comes to your driveway in Weatherford or your workplace in Fort Worth, cuts the key, and completes the theft-deterrent relearn on-site — typically for less and with no tow.
What to Have Ready
- Proof of ownership or authorization
- Year and model (and the VIN if handy)
- Any working key you still have
- The vehicle's location
Frequently Asked Questions
What is a theft-deterrent relearn?
It's the procedure that enrolls a new key or fob into your Chevrolet or GMC anti-theft system so the vehicle will start. Without it, a freshly cut key turns the lock but won't run the engine.
My Chevy security light is on and it won't start — can you help?
Often, yes. A lit security light with a no-start frequently points to a key or immobilizer/BCM issue. We diagnose and, when it's a key problem, cut and relearn a working key on-site.
Do older GM keys have a chip?
Not always. Older VATS/PassKey vehicles use a resistor pellet instead of a transponder chip. We identify your exact system and use the correct key and procedure.
How much is a Silverado or Sierra key?
Depending on whether it's a remote-head key or a proximity fob, and whether you have a working key, expect roughly $120 to $400, with all-keys-lost higher. Call for an exact quote.
Can you do the relearn without a scan tool at the dealer?
Yes — we carry the equipment to perform GM relearns on-site for most models. Some proximity and all-keys-lost jobs take longer, but we handle them at your location.
GM Key Made and Relearned at Your Location
From an older Silverado to a new Yukon, we cut and program Chevrolet and GMC keys and run the theft-deterrent relearn on the spot. Call or text (817) 813-9396 for mobile GM key service in Annetta, Weatherford, Aledo, Willow Park, and Parker County.
Article written by the Annetalocksmith Automotive Locksmith Team. Reviewed by a working automotive locksmith technician.