Replacement ECU and VATs Question
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 77
From: Grand Valley
Replacement ECU and VATs Question Hey guys - Question
If I were to grab a used PCM (12200411) for my 2002 Trans-Am, that would be from whatever, I found a few from S10's and Silverado's locally with same PN.
I have a buddy at GM that could load on the stock cal. file for my car and my VIN programmed in. Considering I have a VATS bypass resistor box installed, should this just be a plug and play deal after programming.
If I were to grab a used PCM (12200411) for my 2002 Trans-Am, that would be from whatever, I found a few from S10's and Silverado's locally with same PN.
I have a buddy at GM that could load on the stock cal. file for my car and my VIN programmed in. Considering I have a VATS bypass resistor box installed, should this just be a plug and play deal after programming.
Last edited by Ape Man; Oct 14, 2025 at 12:33 PM.
Reflash PCM Reinstall, VATS will function as it was previously with the vat bypass module handling all required functions.
You will have to have a scanner to rerun the CKP relearn procedure. It will have a dtc set for crank position relearn otherwise but it will still start and run.
You will have to have a scanner to rerun the CKP relearn procedure. It will have a dtc set for crank position relearn otherwise but it will still start and run.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 77
From: Grand Valley
Reflash PCM Reinstall, VATS will function as it was previously with the vat bypass module handling all required functions.
You will have to have a scanner to rerun the CKP relearn procedure. It will have a dtc set for crank position relearn otherwise but it will still start and run.
You will have to have a scanner to rerun the CKP relearn procedure. It will have a dtc set for crank position relearn otherwise but it will still start and run.
