2003 Chevorlet Silverado 1500 LS 2WD QUESTION Rear Axle

[chevydiesel]

I have a 95 2500 silverado and the 4 wheel drive stopped working. I replaced the actuator and checked wires and all was fine. The transfer case engaged and the drive shaft was spinning, but no front wheel movement.
Now today I heard some grinding coming from the front axle when I was driving to work (not in 4 wheel drive)
but it didn't last long. What could the problem be? Thanks.

[Mechman]

If the drive shaft is turning but the wheels are not, then you have a front differntial internal problem. This would also explain the grinding.

[pinky_109]

I currently have a rear gear ratio 342 in my silverado. I am looking at upgrading to a 410 as i want more response out of the truck. I was wondering if I need to change out the front end gear out as well.

2010 silverado
4.8 l 4x4

[wildman]

Only if you want to use the 4WD.

[protech]

You can check the fluid in the front differential, and if there is none, or if it metal colored you know you have a problem internally. If you replaced the actuator, you could have mis-aligned it while reinstalling and that would cause grinding while it is trying to engage and no 4WD.

[GDO]

Here is what happens when im driving down the road i hear this squeak squeak squeak squeak sound and im not pushing down on the brake neither the truck is not raddling like the bearing is bad or making that moning noise it just has a squeak that is not just one long squeak its one squeak and then 1 second later another squeak

HELP IF YOU WOULD LIKE TO TALK TO ME OVER THE PHONE SO I CAN BETTER DESICRIBE THE NOISE SEND ME A EMAIL WITH YOUR NUMBER AND I WILL CONTACT YOU MY NAME IS GARRETT

[ProTech]

A couple things to check that normally make a squeaking noise back there...

First, check your U-joints! This is an extremely common part to fail that makes that type of noise as the driveshaft rotates. Be sure to check both on the rear driveshaft.

Second, it could possibly be the backing plate hitting one or both of the rear rotors. This is also a common thing, as they usually rust up and start to come apart and contact the rotor in places.

If neither of those are it, you'd really have to get someone to help listen in the area the noise is coming from while you drive it slowly to make the noise happen.