Using a scan tool on a ls-swap

[LH Lead-Foot]

Yes. Keeping the VIN from the donor is my main point as it is used to program a new PCM with the operating system for the vehicle it is going into. Today, a subscription to ACDelco TIS2WEB will get the files needed for a "Flash" or complete program using the TECH2, GM MDI and any J2534 device and several other used in the aftermarket. They have several programs that range from cheap to expensive and last up to 3 years. I have been in some shops who used wireless for programming a vehicle in the parking lot. That scares me a little. If battery voltage drops, a cord comes loose, connection is lost or any error occurs during programing, do not shut off the key. Just re-start the programming and repeat. Turing the key off is a re-boot that takes those file from short term memory into long term memory. That's bad. I got my TECH2 in 1992 so I did not have to wait if it was in use else where in the dealer. Updating a module or node on the serial bus will fix a known problem that engineering have identified, but a new one, needs the original files so it knows what vehicle it is installed, as some modules like a Drivers Door Module or Passengers Door module, or like a BCM that works with 2003 - 2008 in Utilities like the GMT800 2dr., 4dr., lift gate. Amazing times.