09 cobalt ss alarm and stereo

im pretty stuck here, could use some help. 09 cobalt ss, installed pioneer avic z1, 4 new memphis speakers, 2 memphis subs, memphis hybrid amp, also a compustar alarm/start pro system. 3 problems, i have anoying engine noise, tried some filters but they didnt work, i heard pioneer decks suck for engine noise, just wondering if there are any other ideas. Also my remote start works but sometimes takes 2 or 3 or 4 times cranking to start, also quite anoying. and my favorite, after 15 minutes of driving normally, now my blower fan and wipers stop working, ever since the install. Ive triple checked wirring and its all good, i soldered all connections to avoid any problems, ive got a feeling my bcm is somehow now fried. im stuck and open to any and all ideas 

On your music separate the power cable and the ground cables run them on each side of the car if possible,. and on the rca cables use shielded cables like (monster) also if possible use more than one ground, you really dont need those filters.Follow those simple steps and all that hum should go away.triniforever

if i unplug cables, the noise is gone, im using memphis cables. I added another ground but its still there, battery's in the trunk and i routed the cables on opposite sides but its still there.  for remote start im using idata link, ADS-AL(DL) GM2 and the program for my car was installed when i bought it, even double checked with a new one. Now ive completly removed that box and wirring and blower fan and wipers still cut out, pretty sure BCM's toast.