Hey guys, the other day I was driving around in my 93 LS and I just noticed a really small ticking or pinging sound...now, I only hear this sound when I push down on the gas, and only in drive. I don't hear it in reverse, only in drive. As soon as I let off the gas, the noise goes away. It's not irratating, cuz I can't hear it when the radio's on...I can only hear it when it's absolutley quiet and when I'm really listening for it. I was just curious if any of you guys know what that could be, and if I should be concerned? thanks again, see ya!