Question about 2000 Chevrolet Camaro

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Vats replcement i did the resistor work around and now would like to replace lock and key with standard one (not vats) do you know if someone sells one?

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The resistor will just bypass key and lock, while the core of the VATS system will remain in the loop. Unfortunately the problem will come back.
There is an easy DIY way of bypassing the VATS system entirely, including the TDM (that goes faulty very often with the age of the car). You can find the write-up here:

Posted on Jun 18, 2010


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2 Answers

How do I disconnect security system to start my 1994 buick lesabre?

I found a way to bypass it. ive used this module before

Sep 25, 2014 | 1994 Buick LeSabre

1 Answer

Serurity on my 92 forebird

Well, there are 2 choices You can either change the ignition lock cylinder and have the pins changed to where your current key works with the new lock cylinder or you can bypass the VATS chip reader and install resistors in-line on the signal wire to fool the VATS computer. If you do not know anything about option number 2 I would suggest paying someone to do option number 1 for you.

May 09, 2013 | Cars & Trucks

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1999 Buick Century Custom Security light blinks and car will not start

someone told me to by getting out of the car and locking the driver door with the key, going to the front passenger door and unlocking, then relocking the door using the key. I have to repeat this step 2-4 times and eventually it will start. ?????????
This has nothing to do with it starting !

This is what's happening , Inside the lock cylinder are contacts that read the resistance of the pellet on the key , the contacts are getting worn out . You have two options , replace the lock cylinder or by-pass it all together .
The PASS-Key II® ignition key (1) contains a unique resistor pellet which is idenified by the Body Control Module (BCM) (2). There are 15 different key (resistor) codes. Only one ignition key resistor pellet code will work with each PASS-Key II® theft deterrent system.
Ignition Key Lock Cylinder
The ignition lock cylinder contains spring loaded contacts which make physical contact with the ignition key when it is inserted into the ignition lock cylinder. This allows the ignition lock cylinder to provide the Body Control Module (BCM) (2) with the resistor code embedded in the ignition key.

GM VATS Key Resistor Key Security Bypass

Jun 29, 2017 | 1999 Buick Century

2 Answers

My egnition will not allow me to put key in all the way

The lock cylinder must be bad.
Unfortunatly being an 89 it should be a cylinder with the VATS key. They are a bit costly. Around $75 if I remember correctly. Then if a VATS bypass has not been done (not really a bypass of the VATS, just a bypass of the key's resistor) then you need to get a key made with the proper resistance for the new lock. The bright side is the new lock cylinders come with a key already cut so it just needs a copy or thkey with the proper resistor.

I don't know if non VATS key cylinders fit into the column properly because I have only done the repairs with the right parts.

I think has the proper lock cylinders at a desent price. If you do a web search for rock auto discount codes you can save a few bucks as well.

Sep 15, 2011 | 1989 Pontiac Firebird

1 Answer

Remove security off a 1990 camaro because changed the ignition

One way is to change out the chip from the cars computer. Another way is use a General Motors GM VATS Override Bypass Kit, I'v learned that there is a pre-packaged set of resistors for the 15 GM resistor values I found a place called Sonic Electronix. Sonic here it is:
There is also a bit of misinformation on the internet Some tips I've learned when searching out this.
Example: Myth: The standard ignition cylinder lock will not fit or work in place of the vats ignition cylinder lock. Wrong! The standard 1990 camaro cylinder lock fits slightly deeper inside the column, so this takes away your ability to push in the key and turn it backwards for the accessory position. Other than that, it works fine for turning on the ignition.
I hope this helps some.

May 13, 2010 | 1990 Chevrolet Camaro

3 Answers

Where is my ecm located? I want to bypass the VATS.

vats can be bypassed by locating wires from key lock cylinder under dash. this is common problem with this type of system. you must determine resistence valu of key resister and cut wires ind solder replacement to ends of wires that go to vats module which is seperate from ecm module.

Apr 18, 2010 | 1994 Cadillac Fleetwood

3 Answers

Key and starting problems. Do I have a bad VAT?

If you want to keep the VATS system in factory working condition (normally recommended) then a VATS replacement is the answer IF the shops diagnosis is correct, BUT generally speaking ALL GM products built in that decade with the VATS system fail for the same reason sooner or later and it's not usually the VATS itself, but in the key resistor reading portion of the ignition switch.
My 97 Riviera had the same difficulty. Sometimes starts perfect. Other times is totally dead, not like a weak battery, but no fuel pump, no ignition, no starter at all. I noticed the 'security light was on on the dash and if I wait for 3 minutes the security resets itself and the car starts fine.
If these symptoms fit then it is the key reader and not the VATS itself.
There are 4 options if this is so.
1. Aggravation unlimited by putting up with it and waiting for 3 minutes whenever it won't start. (not recommended!!! drives you crazy!)
2. Replace the ignition switch and reader and keys (expensive, but the best all around solution if money is not a problem as it keeps your security system intact, around $250-300)
3. You can buy and install (or have installed) a VATS key reader bypass module. (also a bit expensive, like $150-200 installed)
4.My choice- I took my key to Radio Shack and read the resistance or the resistor. There are 12-15 different combinations. Then I bought 2 resistors that added up to that value + 5%. I soldered those together in line with bull nose connector ends. Then I pulled the lower steering column cover and found the 2 wires leading from the ignition switch reader. Be sure to disconnect your battery and leave the big yellow wire alone, that's the airbag!!! The 2 wires are usually run together inside a long outer sleeve similar to shrink rap and they exit the switch from a different position than the normal on/off/accessory etc. wires. Once located I clipped the wires leaving the switch leads dead and installed the matching bull nose connector ends and then plugged my resistors in line. The car now believes it has the proper resistance key inserted. The rest of the VATS system is not affected. Car starts every time!
This solution requires a little bit of time (took me 1 1/2 hours all in all) and just a little know how, but total cost came to $2.79 :)

Nov 13, 2009 | 1990 Oldsmobile Toronado

3 Answers

How to bypass the chip in the key 1995 chevy camaro

cant bypass if u want to get rid of it need to replace ignition system with a non security chip system--including computer reprogram

Oct 29, 2009 | 1995 Chevrolet Camaro

2 Answers

Security light comes on, car won't start until it goes out(3 min). This happens at random but is always 3 minutes. Can this be reset or what? 1995 lesabre.

You have waht they call a vats system where you have a chip like diod on your key there is way to by pass or at least service your vats ignition but only by a locksmith who is versed in this area. dealer charge way to much.

Sep 24, 2009 | 1995 Buick LeSabre

1 Answer

Lost Keys

These cars have an antitheft system called VAT. The key have 15 different values. This means fifteen different resistant values. For those who still have your keys use an ohm meter and take a reading on that little black thing on the key near the finger grip; write that value down. Then match that value to the correct key numer 1-15; get that key and have it cut; it should work. Also the wires can go bad in the ignition lock and the system won't read the key and will cutout the starter and fuel pump for around 10-15 minutes then reset. To fix this is to either replace the lock and the two wires that go with it. You can  bypass the vats using the correct value resister and finding the two small wires under the dash coming from the steering column unplug it and stick each end of the resistor in the female side of the plug going into the dash area. For those who have lost their keys you will need allot of patance and get all fifteen value keys in resistors; try them one at a time until you get the right one. The wrong one will trigger the security system and you will have to wait 10-15 minutes for each reset before trying again. Then get a new ignition lock and same key number 1-15 according to the resistor value; cut it for the new lock and install. The only other way is to buy a new vats module they program one time only and tear the dash out of the car to get to it.

Oct 12, 2008 | 1993 Chevrolet Camaro

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