Hey guys,

Need some assistance. My 2001 Silverado 1500HD LQ4/4L80E keeps throwing the code for "Knock sensor bank 2, voltage low". Forgot to write down the DTC #, but that's the explaination.

If trucks are like F-bodies, there is a totally different DTC when the knock sensor itself is going bad. So... I think it may be a wiring issue. I'm thinking perhaps a wire rubbed on something and now is grounding out.

I have done no recent wrenching on the truck. Just happened a couple weeks ago for the first time during a long highway trip and now when I clear the code it throws it again within a couple days.

Anyway, can someone explain to me where I can find the exposed portion of the wiring harness to the knock sensors? Want to check it for visible damage and hook a multimeter up. Would like to start first on whatever portion I can access BEFORE I resort to pulling the intake manifold, etc.

TIA