Not correct....
For proof, here is a vehicle build sheet for my Hummer.
Component Code : 10 - ENGINE ASSEMBLY
Source Plant : T - CPC TONAWANDA, NEW YORK
Part/Num Broadcast : NJT Traceability : 043350379
Date Scanned : 04/26/2005 Time Scanned : 09.38.00 Scan Station : 01
Please note: Engine Assembly Source Plant....Tonawanda, NY.
More proof:
3.5L I-5 Information
This is the GM powertrain website, that shows were all the engines are manufactured.
Now, I need to ask, which son told you this? The lawyer or the GM executive?
Mark (or is it Marc) from GM works either at this plant or nearby. I believe he can verify.