Keyecu Smart Remote Key Fob for GMC Terrain 2021–2024 — 5-Button 315MHz HYQ1AS, Full-Function

This is a full-function KEYECU smart remote replacement for GMC Terrain model years 2021–2024, featuring five buttons, a 315MHz transmitter, and FCC ID HYQ1AS ready for cutting and programming.

If your Terrain key fob is lost, damaged or simply failing, this KEYECU unit provides a factory-style alternative that contains the battery, uncut metal blade, integrated 4A transponder chip and the matching circuit board. It is sold as a complete remote shell and electronics assembly that must be cut and programmed by a locksmith or dealership to operate with your vehicle. The case and button layout mirror the original GMC key so it fits standard key storage and immobilizer workflows.

Will this remote actually fit my GMC Terrain?

This remote is engineered to match the appearance and electrical specifications used on GMC Terrain vehicles from 2021 through 2024, but you should confirm compatibility before purchase. Verify that your current remote shows the same FCC ID, frequency, or part numbers inside the shell, and compare the button arrangement and housing shape to be sure the external fit is identical.

• Compatible years: GMC Terrain 2021, 2022, 2023, 2024.
• Frequency: 315 MHz; FCC ID: HYQ1AS.
• OEM part numbers to check: 22984995, 13522899, 13547801.
• If you lost your original, a dealer can confirm the correct remote for your VIN.

What arrives in the box and what must I do for it to work?

The KEYECU remote ships ready-to-program with all necessary internal components installed and a pre-crimped battery. The metal key blade is uncut so a locksmith or dealership must cut it to match your vehicle’s locks, and the remote’s transponder needs to be programmed to your car’s immobilizer system before it can start the engine or perform remote functions.

• Included: battery, circuit board with 4A transponder, uncut blade, complete fob shell.
• Required: professional key cutting and programming (locksmith or dealer).
• No special tools included for programming — dealer or locksmith service required.
• Functions: keyless entry, lock/unlock, remote start compatibility depends on vehicle setup and programming.

How do I confirm the part number and frequency on my current key?

To ensure you buy the correct replacement, open your original key fob and inspect the shell or the circuit board for part markings. The board or inner casing usually lists the FCC ID and part numbers; if your original key is unavailable, your dealership can look up the correct remote by VIN.

• Open the original shell to view printed markings on the circuit board or plastic case.
• Look specifically for FCC ID (HYQ1AS), frequency (315MHz), and OEM P/N references.
• If the original is lost or broken, provide your VIN to a GMC dealer to confirm the right key model.

Is programming difficult and what should I expect from the locksmith/dealer?

Programming requires vehicle-specific procedures and access to the car’s immobilizer system; most locksmiths and all GMC dealerships can perform the service. Expect the technician to cut the uncut blade to match your locks, program the transponder to the vehicle, and test all remote functions before handing the key back to you.

• Locksmiths/dealers handle blade cutting and electronic pairing to the vehicle.
• Bring proof of ownership and your vehicle VIN to speed up the process.
• Programming time and charges vary by provider; ask for an estimate in advance.

Who this is for: Drivers of GMC Terrain model years 2021–2024 who need a reliable aftermarket replacement for a lost or malfunctioning smart key fob. This option suits owners who want a complete, ready-to-program remote that replicates factory functions and fits original storage locations, and who are prepared to have a professional cut and program the key to their vehicle.