When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Is this the brand new ECU or it's a used one?. I believe the 2001 GS300 is not programmable ECU/ECM. The key immobilizer is programmed to the ECU to start the car. The key and the ECU are married to each other, so without the master key, this ECU is useless. I'm sure the 2001 GS430 ECU can be reprogrammed and download, but not sure about the 2001 GS300.