NHTSA Complaint #11491381 — 2010 GMC TERRAIN

As i went to drive my terrain we bought back in June or July. But for the absolute first time we needed to use the defrost/defogger button last week on OCTOBER 20, 2022 and it wouldn't work. No lights came on to say it was defaulty. It also started to make our radio screen flicker when i tried to turn defrost on and it's continuously flickering and defrost doesn't engage on front windshield at all won't even melt snow or help defog when it's been raining or it's cold out. I almost wrecked my terrain due to this problem. Now on my instrument panel says camshaft/crankshaft sensor says service stabilitrack and something about my AWD System. All these happened within a week from trying to use my defrost. Also my instrument panel where it shows how fast i go flickers and it flickers on the RPM side as well. Noone has touched or looked it over since i have owned my 2010 terrain. Everything was just fine up till i pushed my defrost button and then all the other stuff happened