2005 chevy silverado no spark on any cylinder
I have a 2005 chevy silverado 1500 5.3 v8 and i have lost all spark on every
cylinder. i had the truck idling in the driveway and it died all of sudden. went
out to restart and i dont get a fire or any pop at all and put a spark tester on
multiple cylinders and identified that i indeed have no spark anywhere. i
started by testing to make sure i have good voltage and ground at the plugins
for each coil which i do. then i replace the crankshaft position sensor (which it
wasnt throwing a code for it but replaced it anyway) and it still has no spark.
the only thing i could think of left that could be bad would be my pcm. today i
went to the junkyard and bought a used pcm that has the exact same
numbers on the tag and tried swapping it and going through the re-learn and
still no spark. went back to original pcm, still no spark. im absolutely stumped
here. any help would be appreciated.
