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- info@dfwkeys4cars.com
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Hummer H3 / H3T Key Replacement
Hummer H3 / H3T keys date back to 2006 and span 1 key system across the model’s generations — transponder ignition key + separate keyless-entry fob. DFW Keys 4 Cars cuts and programs every one of them at your location anywhere in Dallas–Fort Worth, 24/7 — spares, all-keys-lost, fobs and lockouts. Call (214) 717-6398.
About H3 / H3T Keys
Verified key reference for the Hummer H3 / H3T — model years, key types, and the transponder/immobilizer each generation uses. Boundary years can overlap; we confirm the exact part by VIN before dispatching.
| Model / Generation | Years | Key Type | Transponder / Immobilizer | Blade / FCC |
|---|---|---|---|---|
| H3 / H3T | 2006–2010 | Transponder ignition key + separate keyless-entry fob | GM PK3+ — Megamos Crypto ID48 | B110 / B108 (TOY43R profile) |
Security System & Immobilizer
Hummers run GM’s security systems — PassLock and PK3/ID46 transponder keys — shared with their GM platform siblings.
On the H3 / H3T specifically we see: GM PK3+ — Megamos Crypto ID48. A correctly cut but unprogrammed key turns the locks and never starts the engine — programming is the half of the job that matters.
Which key does your year have?
- 2006–2010: Transponder ignition key + separate keyless-entry fob — GM PK3+ — Megamos Crypto ID48 (B110 / B108 (TOY43R profile))
Our H3 / H3T Key Services
- Key replacement — lost, stolen or broken keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — cheap insurance done in one short visit
- Fob & transponder programming — remotes and smart keys paired to the immobilizer
- Lockout service — damage-free entry, 24/7
- Ignition repair — worn cylinders and keys that won’t turn
Hummer H3 / H3T Key FAQ
I lost the only key to my H3 / H3T. What now?
We come to the vehicle, verify ownership, cut a new key from the VIN, and program it on-site — no tow, no dealer wait.
Will a hardware-store copy start my H3 / H3T?
On transponder-era cars it opens doors and nothing else — the chip must be programmed to the immobilizer, which is what we do curbside.
How fast can you reach my H3 / H3T in DFW?
We dispatch the nearest mobile unit metroplex-wide, 24/7 — call (214) 717-6398 for an honest ETA.