GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition in ON, Engine OFF

Lockout Timer

Security Data

Seconds

0-2550

Auto. Learn Timer

Security Data

Seconds

0-2550

Seed and Key Timer

Security Data

Seconds

0-2550

Passlock Data Voltage

Security Data

Volts

0-5V

Security Lamp State

Security Data

On/Off

Off

His. DTC Cyc. Counts

Security Data

Counts

0-255