DTC  | Diagnostic Procedure  | Module(s)  | 
|---|---|---|
U1000  | BCM, DIC, IPC, Radio, OnStar Module, SDM  | |
U1016  | BCM, DIC, EBCM, IPC, OnStar Module, SDM  | |
U1040  | BCM, DIC, IPC, PCM, SDM  | |
U1064  | DIC, IPC, Radio, PCM, SDM, OnStar Module  | |
U1088  | IPC, OnStar Module  | |
U1096  | DIC, OnStar Module, SDM  | |
U1128  | OnStar Module  | |
U1255  | EBCM, PCM  | |
U1300  | BCM, DIC, EBCM, OnStar Module, PCM, Radio, SDM,  | |
U1301  | BCM, DIC, EBCM, OnStar Module, PCM, Radio, SDM,  | |
U1305  | BCM, DIC, EBCM, OnStar Module, PCM, Radio, SDM,  |