Just sent an e-mail to cadillac, the one that is for GM europe no longer works and the following auto response message comes back,
"Thank you for your email enquiry to Cadillac, Corvette, Hummer. Please note this email address is now out of service. For further assistance please contact Klintberg & Way via email@example.com or on
+800-8680 8800 or +46-8680 8864. Thank You"
I have forwarded my enquiry to it and will let you know how responsive/helpful they are.