2012 equinox reduced power light engine light and traction light came on. Lost a lot of power got home and all light except engine

2012 equinox
Reduced power light
Engine light
And traction light
All came on
Lost power to about 40 mpg
Got home had car sit now
All lights off except engine light.
Turned car over and trying to start but won't.
Pls help.

My car has 13700 miles.
My car has an automatic transmission.

– 2012 equinox reduced power light engine light and traction light came on. Lost a lot of power got home and all light except engine