GM Service Manual Online
For 1990-2009 cars only

DTC

Description

Type

Illuminate SECURITY Indicator

B1007

EEPROM Write Error

VTD

Yes

B1009

EEPROM Checksum Error

VTD

Yes

B1327

Source/Battery Voltage Low

VTD

Yes

B1328

Source/Battery Voltage High

VTD

Yes

B2734

Coded Key Controller Memory Failure

VTD

Yes

B2947

Antenna Power Short to Ground

VTD

Yes

B2948

Antenna Power Short to Battery

VTD

Yes

B2955

Key Code Input Shorted to Battery

VTD

Yes

B2960

Invalid Coded Key is Present

VTD

Yes

B3028

Starter Relay Interface Short to Ground

VTD

Yes

B3029

Starter Relay Interface Open/Short to B+

VTD

Yes

B3031

Key Decoder in Assembly Learn Mode

VTD

Yes

B3055

Key Not Present

VTD

Yes

U1016

Loss of Communications with PCM

VTD

Yes

U1164

Loss of Communication with DIM

VTD

Yes

U1255

Class 2 Initialization Error

VTD

Yes