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Message: <blockquote data-quote="Chevy Ecotec" data-source="post: 30820" data-attributes="member: 12158">OK, so lets get into it. It's usually a good idea to try and find a donor vehicle for a swap like this, but since I have already done that, I will try and document what I used from the Regal for the Equinox. At the bare minimum, aside from the LHU engine, you will also need the engine wiring harness all the way to the ECM. There are multiple sensors and solenoids that need to be added to the computer for the Equinox.[ATTACH=full]3472[/ATTACH]I removed the factory harness from the LHU and began dissecting each sensor, all the way to the X1 or X2 connectors. It was easier for me to put the Equinox engine harness on top of the LHU and then begin connecting everything. At this point, I could add each of the missing sensors or solenoids to the Equinox harness one by one.[ATTACH=full]3473[/ATTACH]There is only one knock sensor on the Equinox. The gutless turd doesn't need two of them, but the LHU does. Knock can kill this engine, so don't skimp out here. I removed the connector and wire leading all the way back to the X2 connector from the LHU and added it to the X2 connector for the Equinox. You will have to do the same with multiple sensors. I'll post a diagram showing which sensors and pins shortly.[ATTACH=full]3474[/ATTACH]</blockquote>