Best Passlock II bypass 99 Silverado

Nah, I think you are overANALizing a bit. First off the reason you can't do all those options through the obd2 in your truck is only becasue of its year. If you had a newer GM truck then you could use the 457 or something else and do it with less wiring "invasivly" into the vehicle.

If you feel up to the challenge you should do all the features you wish yourself, even though to your misfortune no obd2 integration is used in your truck. If you are confident that you can make safe connections, and know how to use a DMM, it is really not that hard. Time consuming yes, but not hard.

Now since you already have a 555 on its way to you I feel you should just use it. I promise you it is not difficult and at least in my experience have not had any issues whatsoever.

You do not need in any way to be so concerned how the PKII works. All you need to know is that you will cut one thin yellow wire at the ignition harness. There is a thin yellow wire on the module. You connect that to the key side. Then take the thin yellow/black wire from the module and connect it to the vehicle side of the cut yellow. There is a thin black wire on the module, the taps into the only other PKII wire you need to access, I believe on your truck it is also black but the directions with the 555 will tell you exactly.

There is a thin blue wire on the 555 that you will need to connect to the RS. DEI gives you 3 possible optional wires where you can connect that to but its function is to activate the module to send the code during remote start. (also a blue wire that sends - during remote start)

Now you just hook up your ground, then power. Start the vehicle with the key and in a few seconds the code is learned. Turn the key off and try it with the remote start. If everything else is correct and your tach is programmed or voltage threshold if you so choose, you are done with the PKII part.

The code needs to be sent every time the vehicle is started so I don't think what you were trying to explain will work, if I understood correctly.

It really is simple and does everything for you, all you need to do is wire it in properly and make soild reliable connections for troublefree performance.

Hope I am still being of help.

ok the 791 should come with everything you need to do doorlocks, remote start and full security. If you wish to add window control then that should be the only other module you need besides the 555 for PKII. Now you don't have to use DEI window modules but I prefer them personally, especially when already using a DEI RS.

there should be a direction manual with the RS unit in the box, If you lost it or don't have it for whatever reason you need to go to an authorized DEI dealer and ask if they will get you a printout for directechs. click on resourcses and select the model and print any manual you need. I don't know if all shops will do this for you or if they might want to charge a small fee but it's worth a shot. Perhaps someone else here will post it for you or email it if so inclined.

As far as finding out about all the modules you can try directed.com but usually I have no luck finding anything useful there. You might once again need to find a dealer and look at thier catalog but I don't think you should need any more then the 555 and a window mod.

One more thing. About having all those modules and where to put them. The PKII module is small, you can zip tie that up and away behind stuff under the dash, just keep away from moving parts.

window mods I put in the door between the watershield and panel, if no room I will try the kick or as a last resort somewhere under the dash, there is room in your truck for stuff.

The DEI RS as 3 main components. The "brain, the relay module (small) and the relay "cluster".

The brain is fairly small and the relay will locate not too far from the ignition harness since thats where all your high current connections are made.

the last thing to mount under the dash is the shock sensor, the 791 uses an external one and it is tiny, zip tie it to a large wire harness will usually give decent performance. On some trucks if the customer is ultra picky about even sensitivity around the whole vehicle I add an additional one to the rear of the truck.

wow thats alot of info but seems you are close.

The reason they emphasize about that 3rd ignition (white) will not have an effect on how the remote system starts the car per say. (on some other GM trucks the white or pink white is 2nd ignition, no 3rd is needed).

It is more about the engineering of the vehicle. If all the igntion wires on many GM trucks do not recieve power at the same moment in time it will cause the transmission have problems with shifting (strange..but true..been there)

But it shifts fine when started with the key. I have not seen this cause any damage (but you never know) Simply hooking up the white ignition wire cures the issue.

And yes..if you mess with the passlock system (or older VATS) as well, it will lock out start for a while. Thats what you did when you cut the yellow passlock wire and attempted to start, no biggie.

Before we go any further please make sure everything you connected to was safely and accuratly verified with a DMM.

A quick test for the 555.

Unplug the 555 and jump the thin yellow wire. Put the key in and attempt to remote start. If it does the issue is the install of the 555 or a possible defective unit but thats doubtful, I have good luck with those. follow the directions to "learn" it after you verify all of the connections.

Next you stated you connected the pink wire of the 555 to a "thin yellow" at the ignition harness. Verify that thin yellow is true ignition. If not the unit won't work. Connect it to one of the main ignition wires that you used for the RS. It is simply an ignition check for the 555 to turn it on..the neg during RS wire you connected at the bulldog brain will send the "r" code and allow starting. You might want to check that connection as well. It should put out (-) during cranking of the RS unit.

The other possibility is that you are using the unit tachless, which can give the same symptons you have. On the DEI you must look in the manual at the programming guide. Its a bit confusing without the bitwriter but I do it all the time. Make sure the "check engine" feature is enabled if using it tachless. If stilll shuts down go to the next feature "check engine tach" I think but it's the very next option, I do not have a manual handy right now. Regardless, the bulldog may have something like that to set the voltage threshold, it may not start the vehicle properly if not programmed.

I would reccomend doing it with the tach if the wire is easy to access, I believe it is on those trucks..something like a white wire in a plug marked WHITE on the ECM under the hood, can't miss it. Then you must most likely program the unit for "tach learn" See directions of your system for procedure.

Ok I did my best with what you gave me. Let me know what the dealio is after you check everything I left so far.

Good luck..any other problems be just as specific, that helps alot. Thanks.