Sorry this video is filmed with my phone and not edited properly. This might not work for everyone but can't believe it worked for me. Seemed like bad oil pump, GM Master Tech told me it was. I started with oil pressure sensor located on back of intake manifold, replaced the sensor as well as the screen/filter below it. Was able to replace the filter and screen without removing the intake manifold. That seemed to fix it but after 10 minutes or so with new parts in there oil pressure dropped again. Didn't make sense for it to be a oil pump with no noise in the engine when it was saying 0 pressure. So last ditch effort was to use a quart of atf and a bottle of seafoam in the oil to try and clear up any gunk or sludge blocking sensor. I use 10w30 and the heavier weight maybe was part of the reason for this sludge but at any rate it fixed it, oil pressure solid around 40 psi and up. Drove it a couple hours at different speeds and oil pressure is now good and stabiltrack and traction control and all other dummy lights are off. I think i unplugged battery overnight for lights to turn off. Gotta try this before anything else its easy and good for your engine anyways. After the oil pressure is back to normal its good idea to change oil and get all that gunk out of there. LIKE AND SUBSCRIBE Thanks guys almost 1k!