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 sec

Auto Learn Timer

Seconds

0-2550 sec

Seed and Key Timer

Seconds

0-2550 sec

Passlock Data Voltage

Volts

0.0-5.0 v

Security lamp state

ON/OFF

ON/OFF

His. DTC Cyc. Counts

Counts

0-255 counts