Resistor trick

I've got an '01 Silverado. Where, what colors and how do I position a resistor to do this? I read the threads on resistor key bypass but have found no specific description on how to do this. My Haynes manual doesn't show these wires. Is there a detailed procedure in here somewhere that I haven't seen? I've never tried this. I've installed alrms with remote start on pre-resistor key cars. I like the idea of using the proper reistor to completely bypass the system full-time. Thanks

I don't remember the colorson these, but the position of the resistor doesn't matter.. look in the vehicle wireing page on this sit, that will get you the colors.. the resistor part will get you the color code of the resistor.. basically you cut the "resistor wire" on the truck and put the key in and measurefrom the key to the referance wire I belive.. somewhere on this site is the actual procedure to do this.. youll need a digital meter, and a handfull of resistors....    I can get the procedure tommorow for ya if you cant find it....

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Tire Proz Stillwater Mn
High End Restyling and Comlete Repair

dei makes a box for that truck learns the resistor value best way to go part 555L

Ok, for your truck, I am about 90% sure that the colors for the passlock II wires are: Yellow, Black, and ORANGE / Black. These wire are located at the ingintion harness where you got your ignition wires. You are only going to use the Yellow and the ORANGE / Black wires. DONT CUT THE BLACK WIRE. Doing this will trip passlock and will lockup the vehicle, which can sometimes be unlocked manually, other times you will need to TOW the vehicle to the dealer. Start the vehicle with the key. Cut the yellow wire. Shortly after cutting this wire, the security light/emblem will come on. This is how you know you cut the right yellow wire. If the light does not come on, you cut the wrong yellow wire, try again. Strip both sides of the yellow wire away and strip the ORANGE / black wire, but dont cut the ORANGE / black wire. Measure the resistance with a reliabe multimeter from the key side of the yellow wire and the ORANGE / black wire. This will be your resistor value. You can now shut the vehicle off. WARNING. If for some reason you need to start the truck before this bypass is comleted, reconnect the yellow wire first. Get the resistor value within 5% to 10% of the measured value. Put the resistor inline with the ORANGE / black wire and the car side of the yellow wire. The key side of the yellow wire will not be used again, so you can tape that off. Once the resistor is in, start the truck with the key to confirm the bypass was done properly. If the truck stays running with no security light, you've done it correctly. If not......post up! Good luck.

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

Sounds to me like the 555L is a good eway to go. It really doesn't matter to me if it's defeated all the time or not. As long as my remote start has the right of way. From the looks of it, you don't have to splice into, or cut any wires to use the 555L. If true, that's cool. Thanks for the detailed replies.

Get a GMBP

4 wires:
Constant, ground, activation trigger, and to the purple wire in the OBDII plug. Easiest way

yes true, all those modules are the "easiest" way to go. But, if you want to spend money that you dont have to, more power to ya. In my personal opinion, and having dealt with all those modules, I see them as just another failure point down the road. I have been using this method for over 6 years on the GM's and have had zero problems with it. Just gotta know what you're doing! good luck on your starter with whatever method you choose.

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

Yes but wiring up the way you described with the resistors, PERMANANTLY disables the passlock. That will in turn make your truck more vulnerable to theft. The bypass modules will only temporarily bypass the passlock during remote starting. I think its worth it to just spend the 30-40 bucks on a bypass module and not only make the install much easier, but also keep the factory anti theft system functioning as normal.

The opinions of whether to use the resistor bypass or not is like beating a dead horse. People will use what they want, I prefer not to spend money I dont have to and not use the module. Some people like to keep their factory passlock feature and spend money on a module. Up here in ND, we have very little car theft, so dont buy a module if I dont need to.    

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

It is possible to use the resistor method and have it the Passlock function properly. Use a relay to introduce the resistor when the RS is activated....

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Mike M2
Tech Manager
CS Dealer Services

well then there ya go, no more module....PROVEN! haha

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

Proven , yes it can be done. I've done it with resistors and a relay many times on VATS cars before they started making the modules. I've even done transponder cars with a relay and thin wire wrapping it around the key and ign cylinder. I'm just sayin that personally, I'd rather just use a module. I just pass the the cost of the module along to the customer anyway. Tell them they need this part for the remote start to function properly and they will gladly shell out an extra 30 bucks. But on the other hand, for your own personal car and yer on a budget, then maybe the resistors are the way to go. Say yer installing a 50$ remote start on your 1988 work truck just so you can get it warmed up, maybe 30 bucks will make you or break you. But if you have a customer spending 350-400$ on a remote start for his Denali, he wont have any problem whatsoever shelling out an extra 30 bucks.

very true, good points. to each his own!

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

If it's an older vehicle and customer doesn't give a rats ass for passlock then I just cut the yellow, read the r-value and hardwire the resistor.

I was going to say "just my two cents" but a resistor is closer to 5 cents.

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Prepare your future. It wasn't the lack of stones that killed the stone age.

AND....nowhere near $30 for a module!!! haha...ok, back on topic!

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

Ya man!

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Prepare your future. It wasn't the lack of stones that killed the stone age.

One factor not discussed here is insurance. Basically the passlock system when left intact makes the vehicle very difficult, if not impossible for a typical thief to start. Most alarm/RS systems use a simple relay for a theft deterrant, very easy even for for my sister to get around.

Now I don't post this to debate about "personal preferance" etc. Just want to tell a little story.

A few years ago I got a call from somone that had their Ford truck was stolen and recovered by the police ,stripped in a ditch with the Ignition switch tore up. The insurance company was not only refusing to pay, but this person was being charged with insurance FRAUD. The reason is because the insurance company had a savvy investigator that knew simply breaking the ignition switch would not allow the vehicle to start (this Ford uses a PATS chip in the key).

What this person wanted from me was to appear in court on his behalf and explain how the thief could have bypassed the factory anti-theft system. Unfortunatly for this person I could not do this, for I myself belive it is highly doubtful that a thief was able to do this, so I could not testify on his behalf.

My conclusion is that either some installer completly bypassed it (hid the "capsule" or key near the antenna), or there is something fishey (fraud) going on.

So without this becoming an argument, which it shouldn't be, I think it is something to consider if you or for anyone else that you bypass for has theft coverage on thier insurance. Again, just a consideration..I think we all know there are easy shorcuts to permenantly bypass a Passlock, VATS or PATs that work fine. However if you integrate with the remote start properly to bypass (or a module if prefered) as long as the factory system remains intact, you remove all liability from yourself if this circumstance with insurance happens.

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Take into consideration as well the fact that most insurance companies require a third party starter kill and/or tracking system because they don't trust the OEM immobilizers.

But, like I said, I do it if #1 the customer asks for it and #2 if it's a beater.

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Prepare your future. It wasn't the lack of stones that killed the stone age.

That can be true..depends, it varies state to state. I have lived in NY, NJ, TN, and now florida. The only question ask to me by insurance was does it have anti theft. Now this is the broker,,the companies themselves are quite aware of what the vehicle should have from the factory..and if not they find out fast when there is a claim. In NY was the exception. In that state they ask specifically if the antitheft system is "passive". If it is not then it doesn't matter how "fancy" or expensive of a system you install..they don't consider it and you don't even get the discount.

Now all the factory systems are passive, although any aftermarket system can be set up as pasive as well. But regardless of thier "faith" in the OEM system. try to explain your way out in event of a theft where the ignnition switch was busted or the vehicle was hot wired. good luck with that.

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this is why i love living in ND. hahahaha, this is getting retarded now. you are leading too much into this. ITS A PERSONAL PREFERENCE!!!!!! the theft system will still be active if it has a factory alarm if you're all worried about insurance. I'm sure the number one thought on a customers mind is "how bad will my insurance go up if they do the resistor trick or the module bypass"...haha. I just had to laugh when master5 got all into this. this thread is way off topic now, the guy wanted to know how to do it, not why his insurance would go up if he did! this thread should maybe be closed with an ending note of.....everyone's got their opinion!

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Shaun, we are the same height, that is neat!

12V Installation Technician for Honda, Dodge, Chrysler, Toyota and Jeep.

I agree, it's  personal preference which is why I state in my initial post that it's not a debate about that. I totally agree that it's anyones right to bypass anything they want on thier vehicle.

As a matter of fact, on almost every "VATS" GM I do an RS or alarm in I ask the customer if they would like me to bypass it if it is giving them trouble. The keys as well as the contacts in the switch tend to wear out and those are easy to bypass with nothing but one resistor. However, it is a good idea to ask if they have theft coverage on the vehicle and make sure you install another system to prevent starting.

I can't see how it is "retarded" or in any way off topic when the issue I replied about has to do with bypassing factory antitheft systems. I was felt it right to let people know about a situation dealing with this. Basically that if this is done, and the vehicle ends up getting stolen (this does happen you know, check statistics), that bypassing the factory system could result in not only the insurance company refusing to pay, but there is a chance of being charged with insurance fraud. This is something that actually happened, so is it really retarded to let anyone who wants to disable the factory system know about it?

As far as insurance rates my post reply has nothing to do with that. I was simply stating about in NY that if the system isn't passive you don't get a discount. But since ALL the systems on this particular topic are passive anyway it's a non issue. Just trying help make others aware of what can happen, not that it happens often or anything like that but, just a consideration. Isn't that better then all the hassles that can happen if the customer didn't know about this and it happened to them? I bet they would be pretty angry at the installer as well.

So this is NOT off topic...it is exactly the opposite.

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