My 2004 Tahoe is making a squeaking noise in the front dash on the driver's side. It squeaks when we are driving and it gets louder when we hit bumps. It sounds like something rubbing together. when its raining, the rubbing doesnt occur and there is no squeaking noise. we have tried greasing under the hood and taking the dash apart and can not find where this noise is coming from.

SOURCE: struts were replaced but there is still squeaking in front

possible sway bar links, strut bearing plates (they sit on top of the strut), ball joints, tie rod ends. If the you can make it squeek by pushing up and down on the front, have someone do this while trying to narrow where the noise is coming from.

SOURCE: 2008 Silverado 10,000 miles. 2wd has squeak

it may be the fan belt. The belt may need tightend or need a new one.

SOURCE: 2000 BLAZER SQUEAKS OVER BUMPS AND WHEN TURNING REAL BAD

I had the same problem with my 01 suburban. It was the struts. Replaced them and no more squeaks!!

SOURCE: 05 XL-7 I changed my old belts (with no squeaking)

Take a bar of soap at touch it on the side of belt when it is running. Becareful!!! or spray some WD40 on it. Should stop it. If not it must be something wrong with whatever it is running. If that is a serpentine belt spray it. Soap is good on v-belts.

SOURCE: squeaking sound from shock absorbers

ball joints won't squeak like that; they make a popping noise when they're bad. it is very common for shocks to get water in them and start squeaking, and it's usually a horrible screeching squeak. The only way to get rid of the squeak is to change out the shocks. Hope this helped.