Universal patcher master CAN script to read memory regions

[04colyZQ8]

Any one do up a script to read Gm high speed CAN BCM, PCM or TCM memory regions? I want to try to read the eeprom memory from the BCM on a 2015 chevy trax.

[gmtech825]

her's an example of a mode 23 script for reading the tcm. keep in mind I think there's areas of eeprom that are going to get a negative response when reading with mode 23, such as immobilizer stuff.

Code: Select all

globaldelay:50
delay:500


variable:varread:4:008000000080
#loop:800
00 00 07 E2 23 varread:6:0

#variable:varread:6:+800000

#endloop

[ironduke]

It may also error out if it's 3 byte addressing and your sending 4 or the other way around.

You might find out there's an offset, some bcm's were offset by 0x800000 I think, been a while.
I did find out that poking with mode 23 will soft brick an E90 ecm so be slightly wary.. Before you tell me I'm wrong I did it with 2 ecm's, lmao.. No other commands used other than mode 23.. I did get the flash read but the eeprom segment got erased somehow..

[gmtech825]

It may also error out if it's 3 byte addressing and your sending 4 or the other way around.

You might find out there's an offset, some bcm's were offset by 0x800000 I think, been a while.
I did find out that poking with mode 23 will soft brick an E90 ecm so be slightly wary.. Before you tell me I'm wrong I did it with 2 ecm's, lmao.. No other commands used other than mode 23.. I did get the flash read but the eeprom segment got erased somehow..

i've done the same to an e90, Not sure which address i used that pissed it off though.

[04colyZQ8]

Ok great what about adding to the script to unlock the bcm
First? Wouldn’t it need to be unlocked?

I know the aligro table number.