2 GM categories of the radio security theft lock feature

There are 2 GM categories of the radio security theft lock feature.The first category which was used on GM vehicles up until about 2001 or 2002 required the owner to choose a PIN and enter it into the radio to activate the radio security theft lock feature; The second category which is used in newer GM Tech 2 Scan Tool has smart coding which is a scrambled portion of the vehicle VIN number.

Unlock radio code and VIN Relearn instruction.The only way to unlock the radio is by using the VIN Relearn procedure with a GM Tech2 scanner to set to module replacement setup. Tech2 Diagnostic Tool supported car models : GM/SAAB/OPEL/SUZUKI/ISUZU/Holden,while programming for GM cars till 2014

The GM Tech2 is the same tester GM Technicians use to diagnose GM vehicles. The Vetronix Tech 2 comes with Authentic GM software and provides support for on-board diagnostics on all GM systems 1992 thru 2011.Car model supported: GM/SAAB/OPEL/SUZUKI/ISUZU/HOLDEN