GM Service Manual Online
For 1990-2009 cars only

DTC

Definition

11

Transponder Key Problem

12

Wrong Tansponder Key

13

Immobilizer Not Programmed

14

No Transponder Key Programmed

15

VSS Voltage Low

16

VSS Voltage High

17

No Engine Request Received

18

MIL Circuit

55

Theft Deterrent Module Malfunction