GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Units Displayed

Typical Data Value

Ignition Switch RUN, Engine Off

Lock-out Timer

Seconds

0 -2550

Auto Learn Timer

Seconds

0 -2550

Seed and Key Timer

Seconds

0 -2550

Passkey Data Voltage

Volts

0.0 - 5.0v

Security lamp state

ON/OFF

ON/OFF

His. DTC Cyc. Counts

Counts

0-255