If this isn’t the right location for this post please correct me and I will fix it. Just recently bought a 2006 Grand Prix gxp. Sometimes when I turn the key I’ll have a check engine light come on but zero power to the gauge cluster or anything on the dash nor will the car attempt to start. I’ll have to turn the key off and back on a couple times and it will clear up. the check engine light goes off once I get the car started. The other day I heard an electrical interference noise coming from my front drivers side speaker but has only done it once. when it happened my gauges jumped around a little bit but leveled out and hasn’t done it again. My abs, traction control, and brake lights are all on and have a p0856 “traction control input signal” code. I still have wonky traction control despite the light on the dash but Dont have abs. The abs module was just recently swapped for a reman which fixed a bunch of codes. Any suggestions on where to look? From my understanding there are a blue million ground locations. The the ones I’ve found under the hood soon find and can’t find any bad wires under the dash. This is my first post and very new to the forum. Have been searching for a few days before posting so if I have missed a post that would help me out please guide me in the right direction
