Best Passlock II bypass 99 Silverado

you have to use a module that cuts the yellow wire to bypass the PSII during remote start. It is not hard to do and the wires will be along with the ignition harness anyway where you need to be for other connections. The manual that comes with the 555 will tell you the colors to look for in your particular year vehicle and the 2 you need (one gets cut, another gets tapped into) will be next to each other. The 457 connects to the obd2 connector for the doorlocks and other wires are for door triggers and makes installation alot easier then using all kinds of relays, resistors and diodes. Basically you will need both modules unless someone sells one that does everything in one. There may be something like that around but I only deal with DEI and for now you need both, one to bypass the passlock, one to operate doorlocks. Hope I helped

Interesting modules. seems these do more functions then the dei modules and perhaps will cut down on install time and cutting of some wires. since I only deal with DEI products i can not verify with any accuracy the quality of those modules or the reputation of the manufacturers.

But regardless you will still need to tap into many wires to do a remote start in your truck with all the features you want and assure at least the starter wire will need to be cut if you wish to utilize the kill. Of course the company that makes those modules might understate what needs to be done but once again I am not sure, I am only familier with DEI and have no problems with it.

I admire that you wish to attempt this yourself as most people would be afraid. I have done installs on semis and boats where all the wires were unmarked and the same colors. However since I am an experience installer I can do almost anything without a diagram. But I always try to get one to cut down on install time and learn any "tricks" that may apply to a certain vehicle. I suggest you ask someone to post the wiring diagram for a remote start install for your vehicle here, it will make things go alot quicker and possibly prevent you form seriously damaging any electronic components or systems.

The main thing is to only use a digital multimeter when probing wires and do not connect to anything until you verify and are 100% positive what it is for. Even with a diagram there is still chance for error. But as I said before your truck is not too difficult, at least for someone with experience and the modules really are a time saver.