I need a lot of help with VATS

The Big Lesaber

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Buick Ownership
2002 Lesaber
Ok I have 2002 Buick lesaber it is throwing codes

B3055

B1327

B1009

It cranks and tries to start but won’t I bypassed the fuel pump relay it is something to do with it’s killing spark or fuel injectors idk know which I think fuel but I’m not sure I had the PCM reflashed to Delete the VATS but it still hasn’t worked I’m going to take it back and see if he can do something to fix it I think is a VATS problem but the more I dig the less confident I am any insight would be great
 
Ok I have 2002 Buick lesaber it is throwing codes

B3055

B1327

B1009

It cranks and tries to start but won’t I bypassed the fuel pump relay it is something to do with it’s killing spark or fuel injectors idk know which I think fuel but I’m not sure I had the PCM reflashed to Delete the VATS but it still hasn’t worked I’m going to take it back and see if he can do something to fix it I think is a VATS problem but the more I dig the less confident I am any insight would be great
I think it’s your key, or your body control module that’s what it really sounds like. I had five Buick LeSabre in a row.
 
I think it’s your key, or your body control module that’s what it really sounds like. I had five Buick LeSabre in a row.
I have 2 keys I have tried both and neither work also both of my key fobs have quit working has well is this a sign of a bad BCM and if so which of them is it?
 
I have 2 keys I have tried both and neither work also both of my key fobs have quit working has well is this a sign of a bad BCM and if so which of them is it?
Also this happened all at once I let the car sit for a week went out to start it and no dice also were is the “BCM” because I can’t get a straight answer on if the car has 3 mini BCMs along side the fact nobody seems to know where they are I have gone through the whole Haynes manual and can’t find it
 
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Ok I have 2002 Buick lesaber it is throwing codes

B3055

B1327

B1009

It cranks and tries to start but won’t I bypassed the fuel pump relay it is something to do with it’s killing spark or fuel injectors idk know which I think fuel but I’m not sure I had the PCM reflashed to Delete the VATS but it still hasn’t worked I’m going to take it back and see if he can do something to fix it I think is a VATS problem but the more I dig the less confident I am any insight would be great
look, you need to provide more info. next time, give the code definition with your codes and whether a HISTORY or CURRENT code. This is VERY relevant to your repair because youre not posting Any PCM codes only Body codes.


DO NOT REPLACE THE BCM. Have you ONLY flashed your PCM? Do you have your original one and someone changed it or was a core sent in and one sent to you?

B1009
1767557855131.webp1767557885183.webp1767558059752.webp
 
Ok I only had the PCM flashed I have the original PCM but it is flashed I can have that reversed the codes I have we labeled history
 
Ok I only had the PCM flashed I have the original PCM but it is flashed I can have that reversed the codes I have we labeled history
... you had it flashed. You realize the PCM has to be setup with multiple things , is the part number the same?
the part number should be on the outside of it somewhere on both

Also here is this i just found:


1. Ensure the scan tool has been updated with the latest software version.
2. Ensure the battery is fully charged.
3. Ensure all modules on the serial data line are connected.
4. Connect a scan tool to the data link connector (DLC).
5. Turn ON the ignition, with the engine OFF.
6. Under the DIM Main Menu, select Special Functions. Under the Special Functions menu, one of the choices is New VIN.
7. The user selects one of the following:
7.1. New VIN, to continue with the procedure.
7.2. Exit, to go back to Special Functions menu.
8. After the user chooses New VIN, follow the scan tool on screen instructions to edit VIN:
^ Press Save to save VIN information.
^ Press Done to go back to Special Functions menu.
9. Under the Special Functions menu, one of the choices is Setup SDM Serial Number in DIM.
10. The user selects one of the following:
^ Setup SDM Serial Number in DIM, to continue with the procedure.
^ Exit, to go back to Special Functions menu.
11. After the user chooses Setup SDM Serial Number in DIM, the scan tool displays a screen as follows:
^ Do you want to set up a Dash Integration Module?
^ Press Yes to set up module.
^ Press No to Exit.
12. Choose Yes or No.
^ If the user selects No, the scan tool display returns to the DIM Special Function Menu.
^ If the user selects Yes, the scan tool displays Initializing New Module.
13. Once complete, the scan tool displays Module Initialized.
14. To complete the procedure, select:EXIT:Go to Special Functions Menu.
15. The user selects one of the following:
^ Set Options, to continue with the procedure.
^ Exit, to go back to Special Functions menu.
16. Under the Set Options menu, the user selects from the following as available:
^ Automatic/Manual HVAC Options, to continue with the procedure follow the scan tool on screen instructions to Select the RPO option configuration.
^ Type Option, to continue with the procedure follow the scan tool on screen instructions to Select the Headlamp Type option configuration.
^ LH Drvr. Personalization, to continue with the procedure follow the scan tool on screen instructions to Select the LH Drvr Personalization option configuration.
^ Magna Steer Option, to continue with the procedure follow the scan tool on screen instructions to Select the RPO option configuration.
^ Miscellaneous Options #1, to continue with the procedure follow the scan tool on screen instructions to Select the RPO option configuration.
^ Miscellaneous Options #2, should be turned ON.
^ Personalization Option, to continue with the procedure follow the scan tool on screen instructions to Select the RPO option configuration.
^ Point of Sale, to continue with the procedure follow the scan tool on screen instructions to Select the Point of Sale.
^ RH Drvr. Personalization, to continue with the procedure follow the scan tool on screen instructions to Select the RH Drvr Personalization option configuration.
^ Right Hand Drive, to continue with the procedure follow the scan tool on screen instructions to Select Right Hand Drive option configuration.
^ Universal Theft Deterrent, to continue with the procedure follow the scan tool on screen instructions to Select the RPO option configuration.
^ Exit, to go back to Special Functions menu.
17. Cycle the ignition key OFF and ON.

---------------
There is a chance the IPM, which is behind your glovebox iirc, is looking for your PCM to relay codes/okay to it because its expecting a fuel enable and disable password to cross hands, and the IPM is in charge of the proper power moding (ignitioin switch rotation with the key talks to that module, which then directs the power to places)

Also the highlighted above about the IPM, its possible it just wants to know Export or not, but i dont know. if it is, it just has modified rules for programming keys but still has anti theft


Also when you replace the PCM normally you must do a 10 minute relearn on the anti theft to make it work with the car, if your PCM still had the anti theft enabled then its possible you need to just try and do that.
 
The PCM is the stock PCM it was just flashed I took it out of the car to a guy he flashed it it didn’t not work so I don’t think the problem is it not communicating I think the problem was it was flashed wrong I’m taking it back to be reflashed
 
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The PCM is the stock PCM it was just flashed I took it out of the car to a guy he flashed it it didn’t not work so I don’t think the problem is it not communicating I think the problem was it was flashed wrong I’m taking it back to be reflashed
... you didnt read what i wrote.
why are you trying to disable the anti theft system?
If it WORKS THEN ITS HELPING YOU NOT GET YOUR CAR STOLEN.


If it were passlock instead of passkey, i would understand since its easy to hijack anyway and fails more often (see: chevy trucks in gmt400-800 with anti theft), but passkey iii is fairly stable
 
... you didnt read what i wrote.
why are you trying to disable the anti theft system?
If it WORKS THEN ITS HELPING YOU NOT GET YOUR CAR STOLEN.


If it were passlock instead of passkey, i would understand since its easy to hijack anyway and fails more often (see: chevy trucks in gmt400-800 with anti theft), but passkey iii is fairly
Hey so the security system had FAILED that is why I’m having all of these problems it thinks I’M trying to steal the car it is shutting down the fuel or ignition system everything time I crank it I had it removed to fix the problem that I’m having I just wanted so more incite on what cause these problems I know what the problem and I know how to fix it I just want to know what causes it because if you read my first post you see I am taking it back to him to have it fixed right I also wanted to know where the BCM is in the car and how many BCMs there were because I had read there was 3 of them I was also wondering what each of the BCMs control I still have not had the answer and I’m in need of it because I’m 99% sure I just fried one maybe 2 of them so stop trying to be a know it all and answer my questions please
 
Also about the whole it getting stolen thing it’s got full coverage insurance on so I’m not worried about it getting stolen also I live in Ohio which has really good “stand your ground laws” along side constitutional carry so if someone try’s to car jack me they are going to find out what get shot by a 500 magnum feels like😂
 
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... you didnt read what i wrote.
why are you trying to disable the anti theft system?
If it WORKS THEN ITS HELPING YOU NOT GET YOUR CAR STOLEN.


If it were passlock instead of passkey, i would understand since its easy to hijack anyway and fails more often (see: chevy trucks in gmt400-800 with anti theft), but passkey iii is fairly stable
I have dealt with PassLock before I have a GMT-400 that the VATS went out on and it behaved identical to how my LeSaber is acting that along side the code that had popped up and speaking to body who just had his LeSaber so a similar thing and it was the VATS key read that failed is what made me decide to eliminate the VATS in the PCM I am now realizing that I’m also dealing with failing BCMs be has of tonight I have lost my dash,crank,and many other BCM related functions so incite on the BCMs such as their name, placement in the car and, functions would be greatly appreciated
 
I have dealt with PassLock before I have a GMT-400 that the VATS went out on and it behaved identical to how my LeSaber is acting that along side the code that had popped up and speaking to body who just had his LeSaber so a similar thing and it was the VATS key read that failed is what made me decide to eliminate the VATS in the PCM I am now realizing that I’m also dealing with failing BCMs be has of tonight I have lost my dash,crank,and many other BCM related functions so incite on the BCMs such as their name, placement in the car and, functions would be greatly appreciated
I think you are are in "a world of She-it"! Nobody here can diagnose the problems you haveing over the web!
 
I have dealt with PassLock before I have a GMT-400 that the VATS went out on and it behaved identical to how my LeSaber is acting that along side the code that had popped up and speaking to body who just had his LeSaber so a similar thing and it was the VATS key read that failed is what made me decide to eliminate the VATS in the PCM I am now realizing that I’m also dealing with failing BCMs be has of tonight I have lost my dash,crank,and many other BCM related functions so incite on the BCMs such as their name, placement in the car and, functions would be greatly appreciated
Notice how I have NOT been talking about the BCM i have been talking about the IPM

Youre codes do NOT point to a BCM being bad.
 
I have dealt with PassLock before I have a GMT-400 that the VATS went out on and it behaved identical to how my LeSaber is acting that along side the code that had popped up and speaking to body who just had his LeSaber so a similar thing and it was the VATS key read that failed is what made me decide to eliminate the VATS in the PCM I am now realizing that I’m also dealing with failing BCMs be has of tonight I have lost my dash,crank,and many other BCM related functions so incite on the BCMs such as their name, placement in the car and, functions would be greatly appreciated
PassLock DOES NOT WORK THE SAME WAY AS PASSKEY III
It works the same way as PASSKEY II however.

I cant help you since you have already decided what the problem is and are aimlessly throwing money at things hoping it works

Cart before the horse kinda thing
 
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Personally I would begin with the starter relay in the under hood electrical center, try swapping it with a similar (maybe A/C) relay, but better still take your multi meter and check to see if there is 12V there for the high current (to the starter) and if there is 12V to the switch side (through the PCM and security module) when the key is turned to start. The relays usually have a little schematic right on their side showing the switch, and which contacts go where.

If there is no current to the key side of the relay I would look hard at the security "chip" on the key, that is actually a little resistor, when my 1997 had issue I measured the resistance, went to "Radio Shack" (gone now) and bought in line resistors that matched the value, cut the orange wires at the bottom of the steering column and soldered the resistors in there.
As long as the security module sees that resistance showing it believes the proper key is in place.
The contacts that make the connection at the key wear out with time and fail. This is a work around.




remotesandkeys.com




Discover how to find your Vehicle Anti Theft System (VATS) resistance value without a key. Learn two methods for determining the correct resistor value for your car, ensuring the security and functionality of your GM vehicle.

remotesandkeys.com
remotesandkeys.com
 
Personally I would begin with the starter relay in the under hood electrical center, try swapping it with a similar (maybe A/C) relay, but better still take your multi meter and check to see if there is 12V there for the high current (to the starter) and if there is 12V to the switch side (through the PCM and security module) when the key is turned to start. The relays usually have a little schematic right on their side showing the switch, and which contacts go where.

If there is no current to the key side of the relay I would look hard at the security "chip" on the key, that is actually a little resistor, when my 1997 had issue I measured the resistance, went to "Radio Shack" (gone now) and bought in line resistors that matched the value, cut the orange wires at the bottom of the steering column and soldered the resistors in there.
As long as the security module sees that resistance showing it believes the proper key is in place.
The contacts that make the connection at the key wear out with time and fail. This is a work around.




remotesandkeys.com




Discover how to find your Vehicle Anti Theft System (VATS) resistance value without a key. Learn two methods for determining the correct resistor value for your car, ensuring the security and functionality of your GM vehicle.

remotesandkeys.com
remotesandkeys.com
Passkey 2 in your 97 (lesabre?) , which is resistor based
The Passkey 3 is RFID
 
Ok I understand what you’re saying and I definitely missed judged this has a VATS failure now I’m 100% I’m dealing with BCM failures I think my RIM and DIM have failed I have lost ALL intior power my head lights are stuck on and my horn won’t quit blowing so I need information on the BCMs what their names are where they are at in the car and what they control
 
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