Today we have got a 2021 GMC Sierra 1500 with theft recovery and all keys lost.
Let’s see if OBDSTAR X300 Classic G3 could add keys for this car.
Turn on OBDSTAR G3,
Select
IMMO>>GM>>GM V43.71
Select
Read PIN code>>OBDII READ>>BCM>>AUTO
Turn on ignition.
Back to GM menu.
Select “Manual select Model”.
Enter vehicle info.
Key info.
Select “All key lost”.
Decide whether to delete lost keys.
Press Start button once.
Put only one smart key into key slot.
Enter pin code.
Erase keys.
Press Start button once.
Program second key in the same way.
Test key.
Complete! No GM server access or adapters required.
Done! That’s how to program 2021 GMC Sierra 1500 when all key lost using OBDSTAR Classic G3 Tablet.
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