Crazy Ex removed ECM

[Laura G]

Hi Everyone. I have a 2010 Chevy Silverado with a 5.3L engine it. Up until recently, it ran fine. Around mothers day my ex pulled one of the wiring harnesses Out and cut approx 12 wires. I was unaware at the time and the truck was running so it had not been fixed. Recently he reached in through the driver's side wheelwell and pulled off the ECM, slightly damaging the plastic retainer clips. After discovering all of this, I found the ECM and plugged it back in and put some zip ties on it hoping for a miracle. But in addition,, After disabling my vehicle, and while I was fleeing from him, I lost the chipped key that I had been using to operate vehicle. I had a second key but the chip was not programmed to computer. When I made it to the vehicle, and before I knew the ECM was missing, I programmed this second key using the 3/10 method. The key now stops the alarm, and turns on dash lights etc, but wouldn't start truck. Then we discovered the ECM absence, plugged it in but with the same results. I'm unsure what to do next.

[Snowcamo]

Have another key made and charge it to his A$$! 

 

Then move! Or move first.

[Laura G]

54 minutes ago, Snowcamo said:

Have another key made and charge it to his A$$! 

 

Then move! Or move first.

I have a key for it. But since the ECM was removed.....and I wish I had the money to move, or even had family close to help but I'm out here alone, and my 4 br house burnt to the ground in Nov.

[Laura G]

1 minute ago, Laura G said:

I have a key for it. But since the ECM was removed.....and I wish I had the money to move, or even had family close to help but I'm out here alone, and my 4 br house burnt to the ground in Nov.

I guess my question is really does anyone know how to reset the ECM? Without paying to Tow it, paying for an ECM flash, then replacing the windshield he busted and the 4 tires he slashed....

[Snowcamo]

What I would do is FB marketplace maybe someone local can help. Far as I know there's not a way to reset the ecm. It's all computerized. 

[Jsdirt]

If that computer was swapped with another one from another vehicle, you're in for some big bills I hate to say. Thank GM for that one. I believe '10 was the beginning of Global A architecture - replacing a computer with one that it didn't originally come with, then turning the key on bricks every single module in the vehicle from what my more experienced colleagues tell me. GM claims it's an anti theft strategy. I think it's yet another "empty your wallet" strategy based on their track record.

 

 

Swapping control modules, including the ECM, BCM, EBCM, SDM, TCM, ECC (HVAC), EPS, HPCM, IPC, and Radio, between vehicles will damage both controllers and will result in a no start condition on both vehicles due to the new vehicle security code protocol.

These modules all have IDs that must match in order for the BCM to allow starting the engine. The control modules are coded to the vehicle when they are first programmed, which results in a unique ID being permanently stored in that module. Swapping these security-related modules will cause difficult and time-consuming remediation processes that may include the purchase of new components for both vehicles.

 

EDIT:  According to what I have in front of me, it looks like you are all set. Says '14 and up Silverados, so you're good!

 

If your keys work, then there's probably a blown fuse or 2, or a cut wire you missed.

 

DO NOT replace the computer until you are 5,000% sure there isn't another problem elsewhere. Doubtful the computer would stop working from being unplugged, then plugged back in, so long as all the pins are straight. One folded pin can cause this, too.

Edited July 1, 2022 by Jsdirt
New information

[Snowcamo]

1 hour ago, Jsdirt said:

If that computer was swapped with another one from another vehicle, you're in for some big bills I hate to say. Thank GM for that one. I believe '10 was the beginning of Global A architecture - replacing a computer with one that it didn't originally come with, then turning the key on bricks every single module in the vehicle from what my more experienced colleagues tell me. GM claims it's an anti theft strategy. I think it's yet another "empty your wallet" strategy based on their track record.

 

 

Swapping control modules, including the ECM, BCM, EBCM, SDM, TCM, ECC (HVAC), EPS, HPCM, IPC, and Radio, between vehicles will damage both controllers and will result in a no start condition on both vehicles due to the new vehicle security code protocol.

These modules all have IDs that must match in order for the BCM to allow starting the engine. The control modules are coded to the vehicle when they are first programmed, which results in a unique ID being permanently stored in that module. Swapping these security-related modules will cause difficult and time-consuming remediation processes that may include the purchase of new components for both vehicles.

 

EDIT:  According to what I have in front of me, it looks like you are all set. Says '14 and up Silverados, so you're good!

 

If your keys work, then there's probably a blown fuse or 2, or a cut wire you missed.

 

DO NOT replace the computer until you are 5,000% sure there isn't another problem elsewhere. Doubtful the computer would stop working from being unplugged, then plugged back in, so long as all the pins are straight. One folded pin can cause this, too.

Way I read. The computer was unplugged when the lock tech made the new key. 

So idk how the key was programmed.