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1992 firebird VATS problem

Old 02-05-2019, 02:25 PM
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1992 firebird VATS problem

I lost my keys to my car, so I bought new keys with the ignition tum, then I bought the VATS bypass module from eBay, I put a multi meter to the Vats connector going to the car, it's reading 4.67, which is 4600 resistor, so that is what module I bought on eBay, number # 11, but when I turn on the car, dash lights up, security light stays on that tells me the bypass is not working, PLEASE HELP me get her started
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Old 02-05-2019, 02:29 PM
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Re: 1992 firebird VATS problem

What sort of bypass did you buy ? One that just bypasses the key cylinder ?
or like this ?
http://www.bakerelectronix.com/products_vats/
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Old 02-05-2019, 02:38 PM
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Re: 1992 firebird VATS problem

Btw if you lost your keys how did you determine the vats resistor value ?
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Old 02-05-2019, 02:41 PM
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Re: 1992 firebird VATS problem

You need to read the value of the key, not the value of the car.
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Old 02-05-2019, 08:39 PM
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Re: 1992 firebird VATS problem

You will need a locksmith or someone to test every resistor value on your car to determine what chip it needs. Lost my keys before and had to have someone come out to make a key and test for the correct chip.
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Old 02-06-2019, 09:50 AM
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Re: 1992 firebird VATS problem

Originally Posted by Tuned Performance View Post
What sort of bypass did you buy ? One that just bypasses the key cylinder ?
or like this ?
http://www.bakerelectronix.com/products_vats/
this is what I got https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F283284462521
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Old 02-06-2019, 10:22 AM
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Re: 1992 firebird VATS problem

If you don't care about VATS, get a key cut off your serial# at the dealer (must be a VATS blank), use your original tumbler, and bypass the VATS relay by connecting the power in and power out wires. The relay is behind the kick panel by the drivers foot.
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Old 02-06-2019, 10:29 AM
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Re: 1992 firebird VATS problem

Originally Posted by Dustin Hinton View Post
all that is is a resistor in a box. You have a few choices. Get a bag of resistors and find the passkey module resistance of the original key. Get a baker electronics hz modulator. Call a locksmith or have your computer chip reprogrammed to bypass the vats.
https://www.ebay.com/itm/GM-VATS-Byp...sAAOSwJLJZf7OT
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Old 02-06-2019, 10:49 AM
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Re: 1992 firebird VATS problem

If you want to keep it all stock one of the easiest ways to do this is get a bag of resistors. There are 15 possible values the key may have. Look here https://www.thirdgen.org/vats_passkey_system/

Here is the catch each test will disable the module for for a few minutes (I usually say 15 min to be safe). So you will need to test a different resistor value every 15 min or so. You can also do this with a potentiometer just use a multi meter to dial in the resistance for each test.

Testing the resistance of the module doesn't tell you anything.

Once you have identified the right resistor value you will need to go to the dealer (or ebay) and buy a key blank with the right pellet and have it cut to match the key that came with your new cylinder. Or use the resistor you found to by pass it.

Or if your really don't care about VATS working buy this https://www.hawksmotorsports.com/vat...maro-firebird/ and follow the install instructions, this will remove the need for a VATS key or a resistor bypass.
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Old 02-06-2019, 12:02 PM
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Re: 1992 firebird VATS problem

Here is a bypass like the above but cheaper and I believe it’s duel frequency 30 and 50hz.
https://www.ebay.com/itm/GM-VATS-or-...ss!20876!US!-1
If you state your year make model and engine type I can let you know how to wire it up. Or if you choose reprogramming send me a pm I can assist with that . It’s better to keep a working vats system for vehicle theft especially since it worked before the lost keys. With the bypass you need to jumper the starter enable relay under the drivers side kick panel. The two large gauge wires usually green and yellow otherwise the engine will not crank over.
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Old 02-10-2019, 11:45 AM
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Re: 1992 firebird VATS problem

To wire up the vats bypass module from eBay.
you need power. You can get accessory power at the ecm a6
this is a pink and black stripe wire. Then a ground at a12 a black with white stripe wire.
the module signal wire which you will have to try either wire I think ists a 30hz signal hooks to a blue wire at the ecm pin f10.
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Old 02-10-2019, 11:54 AM
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Re: 1992 firebird VATS problem

Here is a wiring pinout for a v8. The wires should be at the same location as your v6.

https://tpiparts.net/1227730_pinout_diagram
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Old 02-11-2019, 06:28 PM
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Re: 1992 firebird VATS problem

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Old 02-11-2019, 06:30 PM
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Re: 1992 firebird VATS problem

You should contact the seller . It looks to me since this is a duel frequency device you get 30hz out of the white wire if the blue wire is grounded. You get 50hz if the green wire is grounded. Ground the blue wire and cut f10 at the ecm a blue wire and hook the devices white wire to it.I believe that’s what the blue and green wires are for. You can try grounding one wire and try cranking it over if it fires up it’s right. Wait 5 min or so and try grounding the other wire.
just a educated guess but maybe your instructions are better than the eBay schematic.
Dont forget to bypass your starter enable relay pictures on post 14.

https://www.thirdgen.org/forums/elec...pass-vats.html

Last edited by Tuned Performance; 02-11-2019 at 06:43 PM.
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Old 02-11-2019, 06:54 PM
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Re: 1992 firebird VATS problem

Originally Posted by Tuned Performance View Post
You should contact the seller . It looks to me since this is a duel frequency device you get 30hz out of the white wire if the blue wire is grounded. You get 50hz if the green wire is grounded. Ground the blue wire and cut f10 at the ecm a blue wire and hook the devices white wire to it.I believe thatís what the blue and green wires are for. You can try grounding one wire and try cranking it over if it fires up itís right. Wait 5 min or so and try grounding the other wire.
just a educated guess but maybe your instructions are better than the eBay schematic.
Dont forget to bypass your starter enable relay pictures on post 14.

https://www.thirdgen.org/forums/elec...pass-vats.html
Yes i seen that post 14 the starter relay but i can not find that connector, i have a 1992 firebird 3.1 V6
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Old 02-11-2019, 07:01 PM
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Re: 1992 firebird VATS problem

It could be under the tar tape or tucked up under the dash.

https://www.thirdgen.org/forums/tpi/...ay-bypass.html
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Old 02-15-2019, 11:51 AM
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Re: 1992 firebird VATS problem

yes, i went to chevy with my vin number and they made me a key, but they are saying that i have to get the car Programmed, i dont know what they mean by getting the car programmed, has anyone got this done before"?
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Old 02-15-2019, 12:03 PM
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Re: 1992 firebird VATS problem

Did you find the starter enable relay?
The passkey module canít be reprogrammed so they told you false information.
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Old 02-15-2019, 03:00 PM
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Re: 1992 firebird VATS problem


I can not find the starter relay. The tar is not there anymore, could this be it?
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Old 02-15-2019, 03:04 PM
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Re: 1992 firebird VATS problem

Does it have a large purple wire, if so probably the relay.
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Old 02-15-2019, 03:08 PM
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Re: 1992 firebird VATS problem

The only colors there are tan, black and orange, this is the only plug that looks like the post of 14 that show it being jumped off
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Old 02-15-2019, 03:15 PM
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Re: 1992 firebird VATS problem

I looked at the fuse box and that VATS fuse is not there
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Old 02-15-2019, 03:17 PM
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Re: 1992 firebird VATS problem

Sorry had 3ed and 4th gen relay confused in my head. Should have a thick yellow and thick green/white wire.

There is a mat/ sound deading that covers it up under the plastic kick panel that wraps into the door jam.
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Old 02-15-2019, 03:46 PM
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Re: 1992 firebird VATS problem

It did have a 10 amp fuse, is this the ecm, cause I have the vats bypass I think I need to wire it to the ecm

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Old 02-15-2019, 03:49 PM
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Re: 1992 firebird VATS problem

That is the ecm, but you will still need to bypass the starter relay in addition to the module. The model just tricks the ecm into thinking vats sees your key otherwise injectors and fuel pump are disabled.
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Old 02-15-2019, 03:53 PM
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Re: 1992 firebird VATS problem

Thatís the ecm, not sure what 10amp fuse your referring to.
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Old 02-15-2019, 03:55 PM
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Re: 1992 firebird VATS problem

I still can't find the relay
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Old 02-15-2019, 04:03 PM
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Re: 1992 firebird VATS problem

.

Last edited by Dustin Hinton; 02-15-2019 at 04:07 PM. Reason: I mistake double press reply
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Old 02-15-2019, 04:17 PM
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Re: 1992 firebird VATS problem

This is the next relay I see with think yellow wires
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Old 02-15-2019, 04:24 PM
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Re: 1992 firebird VATS problem

Large yellow to large green I think I see them in the picture.
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Old 02-15-2019, 04:28 PM
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Re: 1992 firebird VATS problem


Here's where the tar use to be but there is no starter relay there
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Old 02-15-2019, 04:50 PM
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Re: 1992 firebird VATS problem

Yep, that's cause it's a 92. The style of relay changed near the end of production.
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Old 02-15-2019, 04:52 PM
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Re: 1992 firebird VATS problem

So is the relay I shown the right one?
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Old 02-15-2019, 06:28 PM
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Re: 1992 firebird VATS problem



Looks like the right relay. If You backprobe or remove the relay. You should have power on the yellow wire if you turn your key to the cranking position.
or ground the yellow with black stripe wire at the relay.
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Old 02-16-2019, 07:30 AM
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Re: 1992 firebird VATS problem

I jumped the starter relay with a small Guage wire, with the gm key when I turn the key to the on, the fuel pump runs and the security light then second later the security light goes off I'm able to turn the car over
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Old 02-16-2019, 11:14 AM
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Re: 1992 firebird VATS problem

Making progress, now onto installing the eBay module.

Last edited by Tuned Performance; 02-16-2019 at 06:23 PM.
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Old 02-17-2019, 05:52 AM
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Re: 1992 firebird VATS problem

Originally Posted by Tuned Performance View Post
Making progress, now onto installing the eBay module.
should I install it? I mean the car runs now
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Old 02-17-2019, 05:57 AM
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Re: 1992 firebird VATS problem

The reason I say that is cause the vats see the key
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Old 02-17-2019, 07:57 AM
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Re: 1992 firebird VATS problem

It could simply be the relay is bad. Does the small black wire go to ground with key in the run position? If vats isn't grounding the relay then the model is failing and I would replace or fully bypass so it doesn't fail at worst possible time. If vats is grounding that wire bench test the relay, and replace it if it's bad. AutoZone can usually show you how to bench test the relay.

Though if unless you just lucked out with the right key resistance I'm surprised the security light is turning off, unless 92 vats is simply the starter disable and not injectors and pump also.

Last edited by Aviator857; 02-17-2019 at 08:02 AM.
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Old 02-17-2019, 08:08 AM
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Re: 1992 firebird VATS problem

Originally Posted by Dustin Hinton View Post
should I install it? I mean the car runs now
What do you have the ebay module for? If you want it to by pass the vats module, you've already done that. VATS is an old system and it is defeated in less than 30seconds by someone who REALLY wants to steal your car. If you want to keep it bc you are a purist and you want the car all original, than you're gonna have to pay a dealer to fix it. If yo just want to drive the car, properly connect the two power wires that are bypassing the relay and get yourself a proper modern alarm.
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Old 02-17-2019, 11:45 AM
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Re: 1992 firebird VATS problem

Originally Posted by Dustin Hinton View Post
I jumped the starter relay with a small Guage wire, with the gm key when I turn the key to the on, the fuel pump runs and the security light then second later the security light goes off I'm able to turn the car over
Sorry I misunderstood. It sounded like the engine was now cranking not starting.
You should replace the relay and keep the vats system. Like stated above it could be the passkey module not grounding the relay or bad relay or power to the primary side of the relay is missing. This might be a standard spdt relay a google search of any part number on it might help you find one.
https://www.rockauto.com/en/catalog/...ter+relay,3804
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Old 02-17-2019, 11:49 AM
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Re: 1992 firebird VATS problem

Originally Posted by 427seven View Post
What do you have the ebay module for? If you want it to by pass the vats module, you've already done that. VATS is an old system and it is defeated in less than 30seconds by someone who REALLY wants to steal your car. If you want to keep it bc you are a purist and you want the car all original, than you're gonna have to pay a dealer to fix it. If yo just want to drive the car, properly connect the two power wires that are bypassing the relay and get yourself a proper modern alarm.
This isn’t fully bypassing the vats. It’s bypassing the starter enable relay to allow the engine to crank. The passkey module still won’t send a frequency hz signal to the ecm without the right key pellet resistance. Without the frequency no injector pulse.
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Old 02-17-2019, 11:51 AM
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Re: 1992 firebird VATS problem

Originally Posted by 427seven View Post
What do you have the ebay module for? If you want it to by pass the vats module, you've already done that. VATS is an old system and it is defeated in less than 30seconds by someone who REALLY wants to steal your car. If you want to keep it bc you are a purist and you want the car all original, than you're gonna have to pay a dealer to fix it. If yo just want to drive the car, properly connect the two power wires that are bypassing the relay and get yourself a proper modern alarm.
Most thirdgens with VATS do more than simply disabling the starter. The passkey module sends a 30hz signal to the ECU. Without that signal the ECU kills the injectors and fuel pump. He has bypassed the starter disable relay, but still runs the risk of the ECU killing the fuel delivery if the passkey module is malfunctioning or not reading the key correctly or if using the wrong key value.

I would either fully fix it or fully delete it so you don't have issues in the future. The best solution is to have the eprom in the ECU reprogrammed to disable VATS in the ECU.... Which sounds like maybe a previous owner may have done.
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Old 02-17-2019, 12:05 PM
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Re: 1992 firebird VATS problem

Originally Posted by Aviator857
The best solution is to have the eprom in the ECU reprogrammed to disable VATS in the ECU.... Which sounds like maybe a previous owner may have done.
Agreed. I normally disable VATS in the ECM, then jump the two leads after exiting the column underneath with the correct resistor for the starter enable relay. Kinda confused by the original description though, as the OP lost his key (assuming the car started when he had the key), so the replacement key should have worked after they scanned his vin, or is the dealer blind to the resistor values in the pellet? Why did he even buy a bypass module if the original key started the engine?

- Rob
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Old 02-17-2019, 12:11 PM
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Re: 1992 firebird VATS problem

I suggested the eBay frequency module. He first got a key after measuring the leads to the passkey module not the old keys because they were missing.
He finally went to the dealer to have them run a vin on the resistance of the missing keys. This was after the module was ordered.
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Old 02-17-2019, 01:07 PM
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Re: 1992 firebird VATS problem

The key is reading .53, I will go back up in the posts here and do the vats bypass with the bypass module to the ecm I got on ebay
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Old 02-17-2019, 01:10 PM
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Re: 1992 firebird VATS problem

https://youtu.be/jixZQ2WuyA8
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Old 02-17-2019, 01:11 PM
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Re: 1992 firebird VATS problem

Your meter is on the wrong scale. This sounds close to vats #2 key.
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Old 02-17-2019, 01:20 PM
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Re: 1992 firebird VATS problem

In reference to the video, did the engine start and run okay with the old key?

Because it doesn't seem like a vats issue...

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Old 02-17-2019, 02:07 PM
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Re: 1992 firebird VATS problem

Watch the video I posted, according to everyone, bypassing the starter relay shouldn't make the car start but only turn over the starter and the fuel pump shouldn't come on. I did however took off the wire and put on a new relay i just bought, but car only starts with the wire, hmmmmm. But in the video the fuel pump is priming, i did a fuel pump test, I'm getting 39 psi, should be 46, before I lost the key I started the car every three days for 10 mins, cause I don't drive the car, I do it to let the fuel run threw, one day I went out to start it and it does what its doing in the video, thanks Rob, I was posting this when you was writing that!!!!

Last edited by Dustin Hinton; 02-17-2019 at 02:12 PM. Reason: Forgot
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