My 9-3t was the year SAAB sold entirely to GM but SAAB was still doing all the builds. So, no, no GM anything in it. Not a single American part (which made getting OEM replacements a pain in 2020.)
Sure there weren't "American parts", but there are a fuck ton of GM parts. Opel had been a wholly owned GM subsidiary since 1931.
Also why are you calling it 9-3t? There was never 9-3t and all 9-3s sold in the US had turbo.