Diagnostic Trouble Code (DTC) List

DTC	Diagnostic Procedure	Module(s)
U1000	DTC U1000 and U1255	BCM, DIC, IPC, Radio, OnStar Module, SDM
U1016	DTC U1001-U1254	BCM, DIC, EBCM, IPC, OnStar Module, SDM
U1040	DTC U1001-U1254	BCM, DIC, IPC, PCM, SDM
U1064	DTC U1001-U1254	DIC, IPC, Radio, PCM, SDM, OnStar Module
U1088	DTC U1001-U1254	IPC, OnStar Module
U1096	DTC U1001-U1254	DIC, OnStar Module, SDM
U1128	DTC U1001-U1254	OnStar Module
U1255	DTC U1000 and U1255	EBCM, PCM
U1300	DTC U1300, U1301, or U1305	BCM, DIC, EBCM, OnStar Module, PCM, Radio, SDM,
U1301	DTC U1300, U1301, or U1305	BCM, DIC, EBCM, OnStar Module, PCM, Radio, SDM,
U1305	DTC U1300, U1301, or U1305	BCM, DIC, EBCM, OnStar Module, PCM, Radio, SDM,