I have a 2008 cobalt with similar problem. The service traction control light is on and engine light. My ob11 reader says its the crankshaft position sensor. So, I got a new one and replace it. Did not help. Cars starts hard also shifts slow. Works ok and the speedometer works but the tachometer doesn't. I need help! Now im wondering about the output speed sensor, could that be my problem?
Wednesday, January 23rd, 2019 AT 5:02 PM