noise in engine
i have a 07 impala ss with a 5.3 fuel management engine and it started having lifter sounding noise about 700 miles on it it started making that noise in south caralina in december and it made that noise up until june 07 the noise has faded away sinse the wheather got up into the 70 and 80 i dont know if it is piston slap or lifter or silanoid