03 Silverado Front End Noise In 4wd

[Saleen4all2c]

Hello, okay here is my problem i have a 03 silverado with 73k when in 2wd its perfect but if i use the Auto 4wd or just 4wd i hear this rumbling in the front end. is this normal or some things going bad? i bought the truck used and this is the really first time i had to use the 4wd system.

 

Matt

Omaha NE

[Davidsingletary]

sounds pretty normal...when turning (on pavement) there is noise from the tires, kinda like skidding...it sounds like its rubbing the wheel well or something but its just the 4wd

[Saleen4all2c]

sounds pretty normal...when turning (on pavement) there is noise from the tires, kinda like skidding...it sounds like its rubbing the wheel well or something but its just the 4wd

 

 

No, i get this rumbling sound when just driving straight down the road while i have Auto 4wd on...

[allen1090]

No, i get this rumbling sound when just driving straight down the road while i have Auto 4wd on...

 

I have the same problem on my 05, Ive been thinking it of bringing it to the shop but havnt had much time.

[Saleen4all2c]

No, i get this rumbling sound when just driving straight down the road while i have Auto 4wd on...

 

I have the same problem on my 05, Ive been thinking it of bringing it to the shop but havnt had much time.

 

 

 

so i take it, its not some thing normal for Chevys..... this is my first Silverado and didn't know to much about it..... does any one have any ideas of what might be wrong with it?

[Heybeerman3n8]

I also have the same issue, I have a 2005 z71. sounds like a grinding noise up front when i put it in auto 4wd (even noisier in4wd). I took it back to the dealer 2 times between 11/21/08 and 12/30/08,the 1st time they tore the t-case apart and said (from the invoice) misaligned case, necessary to replace diff. case and side bearings.

They put it back together and drove it and the noise was still there. They took it apart a 2nd time and found the bearing pattern on the new side bearing races not true. They attempted to shim the case to find that the case is not square causing side bearing wear and gear pattern wear. Replaced case. Replaced ring and pinion and necessary bearings and adjusters (new design).

They reinstalled it in the vehicle and took it for a road test. They said the noise is gone. Not True....I brought it back 2 weeks later (in Dec.) and told them the same thing. They kept it for another 2 weeks and then told me they found that my tires rotate at different lengths. They said the "rotational circumference" was off and that was the noise. Fast foward to today...grinding like crazy.

 

I have a few questions that i was wondering if anyone could answer..

 

1)What color is the gear oil supposed to be?

- before i brought it in the 1st time, i checked the gear oil, it did look like there was grinding going on in there, not clean. The gear oil looked like it should have been a "motor oil color". After they worked on it i checked it this summer and they put a red fluid in there, looked like trans. fluid, it's also leaking out all the seals. when i pulled the top plug, it poured out (they over filled it).

 

2) I was told by the dealer that it was ok to drive in auto 4wd all the time. Is this true???

-I had leased an 04 Tahoe and drove it 4 years in auto 4wd and never had a problem. (I bought the Ava. used )

 

 

-Randy

[Saleen4all2c]

Bump

[zedbear]

Bump

 

Mine is making noises as well but even in 2wd but not as much as 4wd and auto. I think it's something in the front differential. I removed the front driveshaft and the sound went away.