TextHummer EV Key System on BT1XX
Pickup EV2/EV2X Launch
Edition 1 launch. BT1XX dedicated EV platform shared with Cadillac Lyriq. Smart fob YG0G21TB2 FCC with proximity entry and push-button start. Global B immobilizer from day one.
Pickup EV3X Higher Trims
2023 mass production. Same YG0G21TB2 fob, same Global B auth. SUV variant launched late 2023 sharing the same key architecture as the pickup.
SUV EV2X Arrives
2024 model year continuity. Phone Key digital pairing rolled out. Server auth tightened further.
SUV EV3X and Edition 1
2025 builds. Same BT1XX platform, refined fob firmware, continued Global B trust chain.
Identify Your Hummer EV Fob
Smart fob YG0G21TB2 FCC. Proximity entry, push-button start, CR2032 cell. Edition 1 spec.
2023 mass-production fob. Same YG0G21TB2. SUV variant uses the same fob.
2024 fob with Phone Key support. Server auth tightened.
2025 fob. Refined firmware, same FCC family.
Hummer EV Key Pricing in San Diego
Pricing covers the fob, OBD programming, Global B auth, full pair-test. EVs need verified high-voltage isolation before we work, included in the price. No trip fee in San Diego County. Standalone lockout $105-$145.
EZ Car Keyz vs. the San Diego GMC Dealer
Same warranty as the dealer. Difference is your Hummer EV never leaves your Rancho Santa Fe garage. The dealer wants a tow.
Skip the Dealer - Call (619) 876-1271Hummer EV Problems We Solve
All-Keys-Lost on Global B
Global B immobilizer auth is tight. We test the auth window on-site before quoting the full job. Most cars get done on the truck. Hard edge cases route to dealer with honest disclosure up front.
Phone Key Pairing Drop (2024+)
Digital Phone Key drops after 12V disconnects. We rebuild the trust chain and reenroll the phone on-site, no dealer needed.
Fob Battery Replacement Auth Re-Pair
CR2032 swap sometimes triggers an auth re-pair requirement on BT1XX cars. We pair-test before leaving.
Aftermarket Fob Programming Failures
Cheaper aftermarket YG0G21TB2 fobs often fail Global B authentication. We use verified OEM-grade blanks only.
Can You Program a Hummer EV Key Yourself?
No. BT1XX runs Global B immobilizer. Server auth required. Zero DIY path.
No. Phone Key enrollment requires authenticated link via the myGMC app, but full all-keys-lost recovery needs licensed tools.
No. EVs require high-voltage isolation verification before any service. Pro stack only.
No. 2024+ tightened server auth further. Dealer or licensed locksmith only.
How It Works
Call or Text Us
Text or call (619) 876-1271 with the year, pickup vs SUV, and where you are.
We Come to You
Truck rolls anywhere county-wide with a Hummer EV waiting.
Program Your New Key
High-voltage isolation verified before any work.
Related Services
Hummer EV Trivia
The Hummer EV launched as the first production vehicle on GM's BT1XX dedicated electric platform, which it shares with the Cadillac Lyriq. The 9,000-pound pickup runs Global B immobilizer architecture, the same security backbone as the 2020+ refresh Acadia and Sierra T1XX. The YG0G21TB2 FCC ID stayed constant across the pickup and SUV variants from launch through 2025. Phone Key pairing through the myGMC app rolled out on 2024 builds.
KEY REPLACEMENT ACROSS ALL OF SAN DIEGO COUNTY
We come to you, anywhere in San Diego County. No shop visit, no towing. Our mobile locksmith arrives at your home, office, or roadside.
GMC Key Service Demo
Watch a GMC proximity fob get programmed at the owner's location.
GMC Key Help Call Now
Sierra, Yukon, Terrain. Every GMC covered across San Diego County.
