P0683 and P1670
 

Ok my truck has been running fine for a while and just recently it began to take a while to start. Then out of nowhere yesterday it wouldn't crank. I had AAA come jump me and got me home it won't start again so I checked the codes I got P1670 electronic feedback not detected and P0683 Gpcm to pcm issue. I have no ideas how to fix this but maybe GPCM might be gone any thoughts?:argh: