Noticed A Slight Knock Today When Truck Was Warmed Up

[99silverado1500]

First time i noticed it today, I changed the oil about 1000 miles ago, level is still good. Seems like a slight knock at fast idle (900-1400) or a less then 7mph run across the yard. Not a valve tap, and its not the CSK. Id like to turn it into my warranty, but they might throw it in on the CSK, or they might throw a junk yard special in, as its a used car warranty. Its not a huge banging, but its a tad lighter then the CSK. I was driving the truck for about 30 mins before so it definately wasnt cold.

 

On the side note, I also noticed a squeak in the left front wheel. Bearings? or maybe rotor? It only does it at one point in the wheel, so I was thinking more towards a rotor, or maybe the breaks are hanging up on a bad spot in the rotor. Advice needed of what to tear apart.

[99silverado1500]

guess nobody has any ideas. hopefully it isnt too major, that it can be fixed under my warranty.

[asilverblazer]

I would first check the pads for the squeak.

 

These motors are pretty solid, I would be surprised if there is something terribly wrong with it.

[99silverado1500]

Could it be possible that I have one of the ones that is a little sloppy (aka loose fitting) and have a cold start knock that doesnt go away? Like only re appears when motor is on the hotter side 210-215 maybe or when its warmer outside and fans keep coming on (was 100 degrees when I noticed the knock) maybe oil thinned out badly and started a slight knock. This morning was pretty cool in temperature, I got in it, and was in a hurry and stomped on it right away, didnt let it warm up, at all, and I had no knock like I usually did in the morning. Truck has a mind of its own lol.

[Draenor]

If it is a rod knock, you will know it. It wont go away and will get worse as time goes by. You could go by a stethoscope and try to isolate where its coming from.