Brief SDD summery U0300-55 - System programming failure - is not configured
Reading a bit more the ICM VIN appears to be different to the cars vin, maybe this is our smoking gun?
Took me a while to get SDD to work, but seems to be working just fine.
The CD400 radio is exactly the same though.
(i can't confirm this was an exact replacement for the original)
Will SDD tell me what came fitted as stock?
I've tried...