have checked a few more things.

tried grounding directly to frame, got worse, it was on the side of the gas tank, may try other side

have replaced the amp, no difference

i get static with just power, bypassed the deck's remote, so all that was connected to the amp was power, ground, and speaker. just jumped from power to remote to turn it on. still got static.

i have kinda run out of ideas, unless it's my speaker wire. could it be?

 

if you are getting static with no rca plugged in, it is either the amp itself, or or you have a bad ground loop, ger a new run of wire from lowes, got for the biggest 2 wire they got on the big rotating rack, that is what i use, never a problem, test each speaker with new wire, if still noise, like i say, it is the amp itself, also, on another note, Blazers are very popular for having noise in them, i went through 3 diff EQ's before i got one that would knock the static out.