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IMPORTANT: Disconnecting a connector on the Body Control Module (BCM), whether the key is in the ON or OFF position, will lead to errors in the instrument cluster or trigger hidden Diagnostic Trouble Code (DTC) messages. To prevent these issues, ensure the battery is disconnected before disconnecting any connector. Only reconnect the battery after all connections are made and the BCM connectors have been reconnected.

NOTE - Our solution will work on vehicles WITH or WITHOUT Door Handle Buttons.

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There are 5 solutions found for 2021 Chevrolet Suburban (Smart Key):

All-In-One Digital Solutions

DS3  

 
Published Released: 10/9/2025
OEM Remote Active
Yes
Keys to Program
1
Keys to Operate
1
3X Lock Start/Stop
Yes / Yes
Takeover
Yes

DS4  

 
Published Released: 10/9/2025
OEM Remote Active
Yes
Keys to Program
1
Keys to Operate
1
3X Lock Start/Stop
Yes / Yes
Takeover
Yes

DS3+  

 
Published Released: 10/9/2025
OEM Remote Active
Yes
Keys to Program
1
Keys to Operate
1
3X Lock Start/Stop
Yes / Yes
Takeover
Yes

DS4+  

 
Published Released: 10/9/2025
OEM Remote Active
Yes
Keys to Program
1
Keys to Operate
1
3X Lock Start/Stop
Yes / Yes
Takeover
Yes
Interface Solutions

DB3  

 
Published Released: 7/29/2025
OEM Remote Active
Yes
Keys to Program
1
Keys to Operate
1
3X Lock Start/Stop *
Yes / Yes
Takeover
Yes
* Only Applies to RSR