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GMC Terrain 2018–2020 Smart Key 3-button 315MHz - HYQ1AA / 13591388

GMC Terrain 2018–2020 Smart Key 3-button 315MHz - HYQ1AA / 13591388

Used original

SKU: B08749

$28.09
 100.00

Fits GMC Terrain 2018–2020

  • 315 MHzFrequency
  • ID46Transponder
  • 3-buttonButtons

Ships the next working day if you order within 35 hours 39 minutes

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Specifications

Genuine OEM 3-button 315 MHz smart key for 2018–2020 GMC Terrain. Used condition, blade not included. FCC HYQ1AA, PN 13591388.

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Genuine OEM · Used

GMC Terrain 2018-2020 - 3-Button Smart Key, 315 MHz

3-Button · 315 MHz · FCC HYQ1AA · PN 13591388

3
Buttons
315 MHz
Frequency
HYQ1AA
FCC ID
No
Blade Included

⭐ Genuine OEM 3-button, 315 MHz proximity smart key for the 2018-2020 GMC Terrain, FCC ID HYQ1AA, part number 13591388 (Strattec cross-reference 5944137). This is a used unit, sold as electronics only - the emergency key blade is not included. It carries the ID46 (Philips/NXP PCF7936-family) transponder chip used on GM's Global A push-to-start proximity system.

⚙️ Key features

Genuine OEM electronics

Factory Strattec board (cross-ref 5944137), not an aftermarket clone - same electronics as the original GMC-issued key.

315 MHz proximity system

Matches the North American 315 MHz variant of this key - the visually identical HYQ1EA is a separate 433 MHz variant; do not mix them up.

ID46 transponder

Philips/NXP PCF7936-family chip, standard for GM Global A proximity keys of this generation.

👥 Who it's for

Automotive locksmiths

Sourcing genuine GM electronics at a lower cost than new OEM for add-key or AKL jobs.

Key shops

Stocking genuine GM electronics separately from blade sourcing.

Terrain owners with a locksmith lined up

Replacing a lost or damaged key where professional programming is already arranged.

🚗 Compatible vehicles

GMC Terrain - proximity/push-to-start trims 2018-2020
Several sources list this exact FCC/PN combination through the 2021 model year. Confirm the VIN or original key's FCC ID/PN if the vehicle is a 2021.

📦 What's included

✅ IN THE BOX

✔ Used OEM smart key (electronics and case)

✔ CR2032 battery, installed

❌ NOT INCLUDED

✘ Emergency key blade - not included, source and cut separately

✘ Programming service - must be programmed by a professional locksmith or dealer

📋 Specifications

🔑 KEY
FCC ID
HYQ1AA
IC
1551A-AA
Frequency
315 MHz
Chip
ID46 (PCF7936)
Buttons
3-Button (Lock, Unlock, Panic)
Part Number
13591388
Strattec Cross-Ref
5944137
📦 PHYSICAL & POWER
Battery
CR2032
Condition
Genuine OEM · Used
Weight
60 g
🔒 PRODUCT TYPE
Type
Smart key (proximity)
Key blade
Not included
Ignition
Push-to-start (proximity)

🛠️ Programming

No on-board programming path exists for this key on GM's Global A proximity platform. Programming requires a locksmith-grade tool with GM proximity coverage (e.g., AutoProPAD, Autel IM-series, MVP Pro) or GM Techline/dealer access, via the vehicle's data link connector. Add-key and all-keys-lost procedures differ in time, security-seed requirements, and minimum key count - some GM Global A modules require at least two valid keys present to complete an all-keys-lost relearn. If the unit is a used key, unlock/reset it from its prior vehicle association before attempting to program it to a new one.

Frequently Asked Questions

Common questions about this product

No. This listing is electronics and case only - the emergency insert key blade is not included. You will need to source and cut a blank separately, or supply your own, before the key is fully usable as a physical backup for the door lock.
Genuine OEM. This is a used factory Strattec unit (cross-reference 5944137), not an aftermarket clone. It carries the original GM electronics and ID46 transponder chip, unlike aftermarket replacements that use a third-party board and chip emulation to mimic the factory unit.
Check the FCC ID printed on the back of your original key. HYQ1AA is the 315 MHz North American variant; HYQ1EA is a visually identical but electrically different 433 MHz variant. Programming the wrong frequency variant will not work, so confirm before ordering.
No. There is no on-board relearn procedure for this generation of GM proximity key. Programming requires a locksmith-grade tool with GM proximity coverage, or a GM dealer with Techline access, connected through the vehicle's data link connector port under the dash.
Possibly. Used OEM proximity keys can still be associated with their original vehicle in GM's system. A locksmith's programming tool typically needs to unlock or reset the key before it can be learned to a different vehicle - mention this to whoever is programming it.
ID46, from the Philips/NXP PCF7936 family. This is the standard transponder used across GM's Global A proximity key platform for this generation, and is what a programming tool reads and writes during the relearn procedure for add-key or all-keys-lost jobs.
Possibly, but confirm first. This exact FCC ID and part number combination is documented for 2018-2020 Terrain by most sources, though some sources extend the listed range through 2021. Check the FCC ID and part number on the original 2021 key before ordering.
Yes. This is a proximity smart key for GM's push-to-start system, not a turn-key ignition remote. It communicates with the vehicle at close range to authorize starting and unlock the doors, in addition to the standard Lock, Unlock, and Panic buttons.
Related lookups:FCC HYQ1AAGMC Terrain