COSTAR-Tech Forum

After experiencing installation/compatibility problems, COSTAR discovered that there is an idiosyncrasy of the Onstar electrical interface with the Class2 onboard network in the 2007 Saturn Ion which requires a bit of hardware/interface customization for compatibility similar to that which is required for the 2007 Saturn Vue. If you order a Bluestar for one of these vehicles you should probably send an email to costar to remind them of this right after you submit the order.