Here at Pro-Rebuild, we have cracked the code on these now OBSOLETE GM Passlock anti-theft modules, equipped on 98-02 C/K Chevy Trucks, GMC Yukon, Chevy Tahoe, Suburban, 99-01 GMC Denali and Cadillac Escalade, and 98-02 Express and Savanna full size vans. In this video, we run down common symptoms on these problematic modules. Bad passlock modules result in a crank no-start situation. There is NO bypass available for a bad module, you have to replace it with a good one. We built this one of a kind testing tool with proprietary software to fully test these passlock modules. We rebuild these with the highest quality components. Each module comes with a LIFETIME warranty. Express shipping available. We have many of all four available part number. 16269455, 16269465, 16269475, 16269485.