Belt area noise.. possibly Power-steering pump going bad? HELP! I have a 01' Sonoma ZR2. 4.6 liter..147k miles, I replaced the serpentine belt, idler pulley, harmonic balancer, tensioner, and AC compressor that was already going out as well, with all gm parts and my belt still squeaks.. I heard from someone that GM trucks, specifically s-10s, and sonomas have a steering pump problem that causes squealing, and a high pitched moaning noise. Is this true? Because I wanna get it fixed.. lol. Please help! Thank you.