Can someone please help me to find where the main ground is supposed to be in the 2006 CTS 2.8...Trying to complete a motor swap and not getting power to any of the electrical system and when the smoke cleared I am left with both ends of the main ground wire and don't know if they are supposed...

Ok this is my daughter's car started out with key stuck in ignition and battery going dead. She drove it to my house I changed the battery and car wouldn't crank no more so it sat in my driveway for about 6 months finally I ordered a new computer put it in did the key learn process and sure...

Cadillac CTS base model, 3.6L engine, 2006. I’ve gone through the fuses under the hood. No issues. I even went to the fuse box under the left backseat. No issues there either. I replaced the whole cigarette lighter socket/ receptacle by removing the old one after taking the panel off. Still...