Chevrolet Suburban 12th (T1XX) (2021–2025) — Key Programming Reference

Key fobs & transponder keys (1 variant)

Photo	Key	Years	Market	FCC ID	P/N	Chip	Freq	Battery	Blade
	434 MHz · YGOG21TB2	2021-2025 NA + Middle East/Philippines export, all trims	Americas · Asia-Pacific · Other	YGOG21TB2	13537962	NXP HITAG-PRO ID49 (NCF29A1M, AES 128-bit)	433.92 MHz	CR2450	HU100 (emergency insert IN-051)

Programming procedures

What the job needs

• Add a key: 1 existing working key required.
• All keys lost: no existing working key needed.
• PIN / security code: required — NASTF VSP SAC + dealer.
• Online / server access: required — GM cloud token + NASTF VSP.
• On-board (no tool) sequence: not available — Chevrolet Suburban GM Global B requires professional OBD tool — no self-programming procedure.
• On site: engine off · Maintain 12V+ · Clear SECURITY/IMMO DTCs.
• Bring: Photo ID + vehicle registration. VIN cross-check before start.

Tool coverage

Documented for this case on: Autel IM608 Pro II · Autel IM508S · Autel KM100 (add key) · Xhorse Key Tool Plus (add key) · Xhorse Key Tool Max Pro · Lonsdor K518 Pro / K519 · OBDSTAR X300 DP Plus · AutoProPad G2/G3 · Launch X431 IMMO Elite / IMMO Plus. Step-by-step menu paths for each tool are in the app.

Notes & cautions

• This chassis Chevrolet Suburban (2021-2025) uses GM Global B AES — newest GM security tier. AKL requires NASTF VSP SAC (24-digit Security Access Code, $150/yr membership + per-VIN fee via SDRM portal). Add-key may proceed without SAC on some 2020-2022 VINs. Autel IM608 + NASTF VSP credential, Lonsdor K518 USA + GM Global B module (limited).
• GM smart proximity or remote head key: ensure existing key fob battery is functional before starting.
• Verify chip before booking (this chassis facelift): GM spans Passlock (pre-2008 econoline) → PK3/PK3+ (2000-2010 Cadillac/Chevy) → HITAG-2 (2010-2016) → HITAG-AES Global A (2017-2019) → Global B (2020+ NASTF VSP SAC required). Mid-cycle K2XX/T1XX facelifts swap chip — confirm transponder ID from a working key with Lonsdor K518 reader before quoting.
• AD Smart Pro ADS178 also strong GM. Lonsdor LKE Smart Key Emulator for K518 simulated-key flow. Xhorse KH100 + GM module. APB112 simulator, G-Box bench EEPROM NOT typically needed. XP400 PRO only for BCM EEPROM bench fallback.
• All existing keys erased. Bring ALL replacement keys before starting — minimum 2.
• No manual AKL for Chevrolet Suburban GM Global B — professional tool mandatory.
• AKL for GM Global B needs PIN (NASTF / BCM read / Tech 2 dealer) + Global B needs NASTF VSP SAC.
• Keep all existing/lost key fobs at least 10 metres from vehicle during AKL.
• AKL accessory needs: NASTF VSP SAC for Global B chassis (mandatory); APB112 simulator NOT mandatory. G-Box bench EEPROM NOT used. XP400 PRO only if BCM EEPROM corrupted (rare).

Lockout

Door pick / decode: Lishi HU100 (CW).

25 verified sources · Last verified: 2026-08-06

Step-by-step tool menu paths, the full source list and video guides for this case are in the KeyAssist app — free to start, works offline.

Security-gateway / bypass-cable requirements for this vehicle are covered in the Gateway & Access reference — open it in the app.

Quick answers

What FCC ID does the Chevrolet Suburban 2021–2025 key use?

YGOG21TB2 — smart key.

What transponder chip does the Chevrolet Suburban 2021–2025 key use?

NXP HITAG-PRO ID49 (NCF29A1M, AES 128-bit) — smart key.

What key blade and Lishi tool fit the Chevrolet Suburban 2021–2025?

Key blade: HU100 (emergency insert IN-051). Lishi: HU100.

What OEM part number does the Chevrolet Suburban 2021–2025 key use?

13537962 — smart key.

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