12633238 GM Genuine Engine Computer ECM PCM E38 - For LS3 LS7 (Requires Programming)

Alright, here's a used but fully functional engine computer.

It's the GM OEM part number 12633238, which is the E38 ECM/PCM used in a bunch of LS3 and LS7 applications.

This thing is direct replacement, meaning it'll bolt in where the old one came out.

It's a used unit, so it might have some minor cosmetic scuffs from being in an engine bay, but the seller says it's fully operational and works as it should.

Might have been a store return or just a take-out from a working vehicle.

Important thing to remember: this computer will require programming.

It needs to be flashed to your specific vehicle's VIN and setup, so factor that in.

It comes with a 1-year warranty, which is solid for a used electronic part.

If you're building an LS swap or need to replace a faulty computer, this is a good start, just make sure you have a way to get it programmed.