1998 and 1999 Chevrolet Astro and GMC Safari use a security system called “Passlock”
This module, which communicates the key information with the PCM is a common failure point in this system.
We here at pro-rebuild have built a one of a kind, passlock module tester which is foolproof. These passlocks are obsolete and unavailable from GM. We offer fully rebuilt passlock modules using the highest quality components. These modules come with a LIFETIME warranty for $149.99 including shipping, no core charge. There are two different part numbers for these parts.
16265005, and 09352885. These are not interchangeable so please make sure you know which part your van has.
For Part Number 16265005 Click Below
For Part Number 09352885 Click Below
The video below demonstrates how our tester works, and explains the system and key relearn procedure.