A practical diagnostic guide to GM BCM problems — how to tell a bad BCM from a wiring, relay, or Passlock issue, and when cloning is the right repair.
Category Archives: ECU
The ECU category covers everything engine control unit — cloning (so you can fit a donor ECU without programming), VIN change (swap the ECU between vehicles), immobilizer delete (immo off for engine swap or test rig), and replacement. We work with Bosch, Continental, Delphi, Hitachi, Denso, and Siemens platforms across 37 vehicle makes. Most ECU jobs we handle on the bench — ship the ECU, we clone or program it, and send it back plug-and-play.
How to clone a GM body control module, which vehicles the service covers, what the BCM actually controls, and why cloning beats dealer replacement.
How Subaru immobilizer systems tie the BIU, cluster, and ECU together — and how to recover when keys are lost, modules fail, or a used donor does not match.
Everything Subaru owners and techs need to know about ECU cloning, IMMO programming, and key matching across Denso, Hitachi, and Bosch Subaru ECUs.