2G Replacing ecu

[Hunter Neuhaus]

So I’m replacing my ecu in my 97 gst would there be any problem with any immobilizer/would I have to get it programmed or anything if I got one from a junk yard and slapped it in it

 

[pauleyman]

Direct swap. No immobilizer. They are different year to year. 2ga does not equal 2gb. They can be used but some changes need to be made. If you're looking for a direct swap 97 to 99 is what you need. However those do differ by design but not function. 98 and 99 use a "black box" ecu