How To Disable Anti Theft System Chevy Cobalt

12-05-2005

Hello Carputing:

My proper name is Daniel. I like to know if yous can disable the anti-theft systme of a Chevrolet Cavlier 2000 ii.2L. The ECU (LS1) number is:

DCAA
Serv No 09356249
HDW 16268310

Thanks very much for your attending

Regards, Daniel

12-22-2005

Quote Originally Posted by elecautocr

Hello Carputing:

My name is Daniel. I like to know if you can disable the anti-theft systme of a Chevrolet Cavlier 2000 2.2L. The ECU (LS1) number is:

DCAA
Serv No 09356249
HDW 16268310

Thanks very much for your attention

Regards, Daniel

Carputing? This site is HPTuners. Carputing does non support V6, or 4 cylinders.

To answer your question is easy. HPT does not support the EcoTec 4 cylinder at all at this fourth dimension. They are working on it.

Even if they practice back up the tuning side of the transmission and engine, the PASSLOCK is non going to be defeated I dont retrieve. You volition have to use the PASSLOCK system in whatever you trying to install this engine in. Yous are going to need the switch, BCM, and PCM, and maybe some other supporting modules to release the theft fuel enable signal.

Loyde

12-23-2005

actually, i think nosotros will be able to disable VATS on these. There are some flags that bypass all the VATs code and also another flag that determines if fuel is cutting if VATS fails.

Needs to exist tested but i call back it will work.

Chris...

12-25-2005

Quote Originally Posted by Chris@HPTuners

actually, i recall nosotros will be able to disable VATS on these. There are some flags that bypass all the VATs code and also another flag that determines if fuel is cut if VATS fails.

Needs to be tested merely i think it volition work.

Chris...

Well, being it is PASSLOCK, and non PassKey, I can encounter you lot might be able to get to some flags in the code and disable information technology. That would be great.

Maybe PassKey will be easier to figure out how to get around in the time to come.

Loyde

12-28-2005

Passlock is serial VATS yep?

12-28-2005

Quote Originally Posted by Chris@HPTuners

Passlock is series VATS yeah?

I had to work on a LB7 (duramx) recently and learned the deviation in this passkey vs passlock...

PassKey is the resistor in the key, or the transponder in the cardinal caput. If you remember the 2004 3800SC engine I put in the Fiero was PassKey 3+. The key caput had the transponder, information technology excited the BCM, the BCM checked the code, and released the theft fuel enable signal to the PCM. This signal is a HEX value on PASSKEY 3 + systems, 50 hertz indicate on PassKey Two systems.

PassLock is the resistor is in the ignition switch itself. Non sure how many values of resistors there are, merely the resistor value triggers the BCM every bit the lock switch rotates. The BCM releases the theft fuel enable signal to the PCM. I am not sure what it takes to become effectually this one, but there are many warning devices that have remote start that work with this.

Loyde

12-28-2005

ok, in the code i am looking at it relates to the bespeak received from the BCM what nosotros call "serial VATS" as the signal is rx'd on the class ii bus.

Chris...

12-28-2005

Quote Originally Posted by Chris@HPTuners

ok, in the lawmaking i am looking at it relates to the point received from the BCM what we telephone call "series VATS" as the betoken is rx'd on the class two bus.

Chris...

Trouble is, I know there are ii types of signals. The HEX information on the class 2 for PassKey three, and the hertz signal on the passkey II.

The class 2 motorbus is simply going to know hex values. The BCM generated the l hertz to the PCM on others, but it was not over the form 2 serial bus.

Surely in that location are flags to turn off either. Well, we know there is in the 99 GTP. This PCM volition outset a engine without any signal to the theft fuel enable.

Loyde

12-28-2005

yes the other type we call "PWM". The lawmaking i am looking at doesn't seem to accept PWM at all.

In the V6 lawmaking there is a single switch if it is "0" information technology runs PWM, if information technology's "i" information technology runs "serial" there is no other option. The V8's have an extra value "2" that means "none".

From memory, the testing you did showed that if you lot fix a PWM car to serial the motorcar ran fine without the signal being received.

12-28-2005

That merely worked on the GT and GTP cars. I tried it on a Bonneville PCM, and it did not piece of work.

I only wink my PCM's to GT or GTP code for the 3800 back up to rid the VATs problem.

Y'all never were able to kill that PassKey 3 + code in the 04 GTP PCM, and then I had to add the BCM and the PMM ( power master style ) stuff.

Loyde

03-16-2006

Daniel-

In that location is a nice clean fix for this if your intent is to run the engine without the BCM (body controller)... very very like shooting fish in a barrel if yous however have the J Car BCM.
Basically:
one.Teach the BCM a new 'cardinal'. This is simply an analog voltage. I can email a valid voltage to you lot. You lot are simulating the presence of a 'Key Module'.
2.Relearn the BCM to PCM. Series messaging, can be washed due west/o special tools - takes most twenty minutes.
3.Get-go engine.
4.Disconnect BCM while running. This will set a theft disable code. Will non ready a 'Check Eng' light. Engine will proceed to run without a glitch. Shut engine down, leaving BCM disconnected.
5.Engine volition now commencement/run without the BCM nowadays. Fifty-fifty after battery resets.

This will work, but depends on what your goal is. Let me know if you need help.

Torg

06-twenty-2006

^interesting tid bit

I'm not certain if this thread has any relevence or life however but

To answer your question is easy. HPT does not support the EcoTec 4 cylinder at all at this time. They are working on it.

the ecotec wasn't available in the Jbody until 2002. the 2001 and previous 2.two liter is the LN2 (more ordinarily referred to as the OHV or 2200). its earliest incarnation is the 2.2 OHV, and in 1998 was updated to the 2200 version (very small changes and different consecration ready upward). They were updated to class2 electrical in 2000.

Simply on topic, I'yard not sure what the original poster is hoping to accomplish by removing or disabling security system. AFAIK, the jbody never had an encoded central.. but passlock2... which is very piece of cake to reprogram for a new pcm, bcm, key lock cylinder, or dammit there'south one more than affair but I can't recollect...

passlock2 relearn:

1) Endeavor to commencement machine. The engine will try to start merely either run rugged and stall or non start at all. This is ok.

ii) After the failed outset attemp, leave key in run position. The SECURITY or equivelent light will be illuminated on dash lath.

iii) Go catch a soda, beer, cigarette, or quickie with your loved one for 15 minutes.

iv) Afterwards, come dorsum and await at your dashboard. The SECURITY light or equivelent should now be off.

five) Plough the primal to the off position and remove it (just to make sure) wait ten seconds, then start the automobile

6) Enjoy.

You may have to practise it a few times to get information technology to work, but I've done several relearns on 00+ J-bodies, and they all piece of work the first time out thus far.

Information technology may be different for before years, or the new GM Delta and Kappa platforms.

06-twenty-2006

hmm upon actually devoting thought process to such, I would approximate that the VATS makes burning the VCM a bit of a hassle?

..makes sense

How To Disable Anti Theft System Chevy Cobalt

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