How do you remove code E48 No Signal?

My 400 watt Clarion APA2001 amp is powering 2 10 inch subs but when i crank the bass i hear a lot of screeching. Is the amp to small? How do you change the transmission filter on 2004 avalanche? Can you bypass the ac pulley when changing a serpentine belt in a 96 Plymouth grand voyager se 3.3 l if so how long should the belt be? Which is the torque converter plug on a A4LD transmission? How many quarts in transmission for 2008 f150? What is the Mercedes a class yellow warning light that looks like a little engine? What effects will hygroscopic have on brake fluid and what is done on a service to reduce this problem? What would cause battery light to come on lose power steering dim lights lose speed on a GMC Safari SLX Van? What kind of transmission fluid do you put infiniti QX4 1999? How do you replace the ac filter drier on a 2001 Chrysler town and country? Can you drive your car if the catalytic converter is broke? What causes brake light failure in a 2002 astro while turn signals still work? What is the firing order for 351 windsor 1988? How do you test the gmc egr valve? What is the cause for exhaust fumes to enter inside the 1994 VW Golf when you turn on the fan and heater on while driving? Why does your car have white smoke? How do you stop brakes on a bike getting stuck? How do you change battery in key fob of Lexus rx330? Where is and how do you replace the egr valve on a Mazda 2.0 liter engine? How do you change the fuel filter in a 1999 Honda Civic si?