Question about 1991 Chevrolet Camaro

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V6-191 3.1L Key security code

Hi, son lost keys for good. We have replace ignition, have been instructed how to by pass the code. Using resistors, told GM has 12 or 15 variations. Have used everysingle one with resistor kit. I read somewhere that the VATS wire was on the passenger side of the 91 and was a green wire. Parts store is saying is a orange wire and that is not working when splicing in the resistors. Any one know any other way to by pass this code? Thanks.

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Had the same problem, hired an auto locksmith who simply read the VAT code with a code find meter and he simply made a key , problem solved for 125.00

Posted on Aug 26, 2008

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Buick regal 2000 car wont do nothing. . when i turn key i just shows the sec life


sec life ?????? SECURITY LIGHT ? anti-theft system problem . The Pass-Key II® Theft Deterrent system prevents vehicle theft by disabling the starter motor and fuel system. If the Body Control Module (BCM) dose not identify the use of the correct ignition key to start the vehicle, the (BCM) will communicate a message to the Powertrain Control Module (PCM) which will disable the crank relay and fuel delivery to the engine.
When the (BCM) identifies the use of the correct ignition key (resistor pellet) to start the vehicle, the (BCM) will send a fuel enable and starter enable message to the (PCM) which will allow the vehicle to start.

How to bypass GM VATS system GM no crank no star

Apr 08, 2017 | 2000 Buick Regal

1 Answer

Security fuse 1999 pontiac bonneville


Need a little more info . Security fuse ????? Do you mean anti-theft ? The SECURITY light is lit on the instrument cluster ? Content theft or vehicle theft ?
Vehicle Theft Deterrent (VTD) Description
Ignition Key
The ignition key for vehicles which are equipped with the PASS-Key® II system consists of the following components:
• A typical square ignition key blank
• A resistor pellet
The PASS-Key® II ignition key has the same mechanical key cuts as a non-PASS-Key® II ignition key. You can not service the key blank and resistor pellet separately. There are 15 different ignition key assemblies, each with a different key pellet resistance value.
When you service the PASS-Key® II system, obtain all ignition keys. Verify the proper key code values withJ 35628-A Interrogator.
Steering Column (Ignition) Lock Cylinder
The steering column (ignition) lock cylinder that is used with the PASS-Key® II system contains a set of electrical terminals. The terminals are used to contact the resistor in the ignition key.
The wire routing for the contacts inside the steering column is very critical. When you service the lock cylinder, maintain proper wire routing.
When you replace a steering column lock cylinder, make new keys. The new keys must match the following items:
• The PASS-Key® II code of the PASS-Key® II system
• The mechanical cut of the new steering column (ignition) lock cylinder.


Measure the resistance of the pellet on the key , go to radio shack an buy a resistor of same value an solder into wiring harness .

pulling fuse won't work , power's the PCM as well . Plus software in the PCM won't let it start if it doesn't see input signal from the Theft deterrent module .Take an get it fix right .

Feb 23, 2017 | Pontiac Cars & Trucks

2 Answers

The security light is flashing and the car wont start how do i fix it


May have a fault in the VATS. Most likely the wires that come from the ignition lock are broke. That is the weak link of the VATS.
Need to measure the resistance of the pelet n your key and basically add that value of resistors to the wire for the lock cylinder at the bottom of the column where they come out.
If you do a search for "VATS bypass" you should find diagrams of how to do this. (This is mistakenly refered to a VATS bypass while it really is not a bypass. The Pass Key module always stays in play. It just bypasses the weak link in the system.)

Sep 02, 2011 | 1995 Pontiac Firebird

1 Answer

Ignition switch key won't turn can't get switch out by using pin punch in slot under ignition how can i get it out since key won't turn everybody says key has to turn for it to come out please tell me how...


Should have pass lock,if anything is wrong with the tumbler,GM recomends replacing the entire assembly.Have to run the relearn proceedure after,instructions will come with the parts from the parts house.

Dec 19, 2010 | 2001 Chevrolet Impala

1 Answer

My son has lost the keys to the ingnition on our 1999 Olds Alero. Is there any way to get keys without replacing the ignition?


MAYBE communicate at gm costumer service and tell the vin number(serial number right on the dash you can see it throught the windshield at the left corner maybe they have a service for that and they will tell you the code to have the new key from the key specialist.

Mar 08, 2010 | 1999 Oldsmobile Alero

2 Answers

My son has a 1999 grand am, just like the oneshown above. the car wont start because the security sys. shuts off the fuel sys. down. the manifold still has good pressure cause we just had thefuel pump...


Need a bit more information, Is the security light on, have you checked for spark and fuel pressure2.gif, just in case you did and know it is the passlock system then check this out, hopefully it will ansewer your problem, please rate your mechanics help.
have a great day. Sorry the pictures won't come up, but check out the site
GM Passlock I & II Information

Please study the following information carefully WHEN INSTALLING REMOTE START systems on a 1996 or later GM car or truck.
Introduced in 1996, GM has changed the VATS anti theft system to Pass-Lock system. This is a similar device to the VATS system, in that there is a resistor present2.gif during the start cycle. However, in the PASSLOCK system, the resistor has been placed inside the ignition switch, instead of the key. See the GM V.A.T.S page for more information.
To remotely start a car with this feature, you must bypass the PASSLOCK system. There are two methods of doing so.. The first, is to permanently bypass this system. This is the easiest method for accomplishing your task. The second way, is to temporarily bypass the PASSLOCK, by introducing relays into the system, which retain all of the features of the system, while allowing your remotes start module to bypass it automatically during a remote start cycle.
Vehicles effected
(1996 and newer): N & J body cars, such as
Pontiac Sunfire and GrandAm Passlock-1
Chevrolet2.gif Cavalier Passlock-1
Buick Skylark Passlock-1
Oldsmobile Achieva Passlock-1
1997 or newer
Chevrolet Malibu2.gif Passlock-II
Oldsmobile Cutlass Passlock-II
1998 or newer
All trucks , SUVs and Vans Passlock-II
It is important to pay special attention to the fact that there are many different ways of achieving the same goal. There are actually 2 different Passlock-II systems. On the next page, there are tests to establish which type of passlock-II your car has.
Relays shown are standard automotive 5 pin spdt relays, available from IEI.
A multi meter is required to measure the resistance values. Accuracy is important within 5%.
Once the value of the resistor is measured, a resistor of the samevalue +/-5% must be purchased (Radio Shack2.gif, for example). You can also use a Potentiometer (POT), which can be adjusted to the same value of the resistor in the ignition switch.

pslc1.gif Passlock-I bypass procedure....

1: Remove the top and bottom shrouds from the steering column.
2: Find the 3 wire ribbon cable2.gif, coming from the ignition switch, containing White, Black, Yellow (Sometimes White, Black, Black). These are THIN wires.
3: Locate the Black 6 position connector on the LEFT side of the steering column, right above the ignition switch position. There is a BLACK (Thin) wire in this connector, called "Bulb Test", which shows Ground with ignition in the Off position, OPEN in the "Run" position, and GROUND in the "Crank" position.
4: Turn the ignition switch to the "Run" position. Do not crank the car.
5: Cut the Thin Yellow wire and strip both ends.
6: Without cutting the Black wire, expose some of the copper.
7: Using the ohmmeter, measure from the Yellow wire (the end coming from the ignition switch), to the exposed Black wire and record the value. Measure more than once to assure you have the right value.
8: Acquire the same size resistor and 3 relays, and perform the connections shown in the diagram below.

pslk2.gif PASSLOCK-II bypass procedure

There are 2 types of Passlock-II systems. To determine which system you have, follow these instructions;

1: Locate two wires, which are THIN and are in the main ignition harness.. Orange/Black (or Black) and Yellow.
2: Cut the Yellow wire, and strip back some of the insulation from the Orange/Black (Or Black) wires.
3: Turn the ignition to the "Run" position ( don't crank the starter). Measure and record the value measured from the KEY SIDE of the Yellow wire, to the Black/Orange wire.
4: Turn the key to the "Crank" position and release. Now read the value again.
pslk3.gif5: If the value changed, follow "Method#1". If the value stayed the same, follow "Method#2".



These diagrams are from our friends at ALARMTEK AUTO ALARM

Oct 05, 2009 | 1999 Pontiac Grand Am GT

2 Answers

I REPLACED THE STEERING COLUMN LOCK AND IGNITION SWITCH CYLINDER ON MY 1992 CAMARO RS EVERYTHING TURNS ON BUT IT WON'T START IT JUST CLICKS. THE FACTORY SWITCH HAD THE KEY STAMP WITH THAT CHIP ON IT. THE...


If you do not have a pass key any more, then you will need to dissable the antitheft (pass key module) in order for the engine to turn over. From what I gather you have replaced the column with an older version, which will not allow any comm. with the module. The pass key module enables the starter circuit. See diagram.


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Sep 27, 2009 | Chevrolet Camaro Cars & Trucks

2 Answers

Lost key


Get out your wallet and go to the dealer! Not much else you can do. Those keys have imbeded security chips that must be programed by thr dealer.

Jun 16, 2009 | 2006 Chevrolet Equinox

1 Answer

Lost my last igniton key


15 different coded keys. these are resistor pellets . ranging in different ohm values if you got a key cut that will turn the cylinder, try google ( passkey ii bypass ) there is a listing of all the ohms radio shack and purchase all of them $30 give or take, get to the two small orange wires around the lock cylinder and cut them close to the lock intall the resistors one at a time in place of where the lock would be ,until you hit the one that lets it stay cranked. no more resistor key needed

Mar 21, 2009 | 1992 Oldsmobile 88

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