Hey guys, it's been a while since I've been here, quick question.
My CEL light is still on for the knock sensor and now an 02 sensor.
My question is does anyone know a place to get a good knocn sensor harness I got a cheaper one so I'm sure that's my issue.
Also how big of a difference does new plugs and wires make on performance? My truck is pretty sluggish off the line and it's really frustrating especially since it's a denali with the 6.0l. It only has many 120-130k on it. Or do you guys think I'm over looking something else.
I've cleaned the throttle body, injectors, replaced the o rings, new tb gasket, valley pan gasket, intake manifold has been cleaned and new gaskets. I'm also thinking maybe the fact that the muffler rattles maybe theres a lot of back pressure that's slowing me down since it sounds like the internals of the muffler have rusted off and it may be clogged? Idk if that's a thing
Also I'm getting a new exhaust put on in the next couple months. Just gotta get a few more detail checks lol