05' Denali engine noise

[B0$$MAN]

but if the gear box is the problem wouldn't there be any other symptoms?

a local 4x4 shop is going to take a look at mine after they finish my Jeep. he seems to think it could be the carrier bearing.

I did a ton of searching and found a few threads on other GM forums ranging from Diesel trucks to Arcadia SUV's. They all describe the same grinding/humming/whirring sound described in this thread and almost all of them came to the conclusion that it was the steering gearbox.

The only symptom you would notice is the annoying sound. If it were a steering pump issue, you would have trouble turning and would notice the powering steering fluid leaking.

I just ordered a power steering gearbox and will be installing next week. I'll let you guys know if this fixes the problem. The only other thing it could be is the actual steering column, which I highly doubt that is the problem.

 

[ebxgsxr]

please update this thread with the results (subscribed)

 

[Wake]

my 02 escaladr does it also... sounds like the diff or whatever the transfercase is called on an awd...

Larry (Popo8) Co-owner
LTXtech.com

The transfer case is kinda what i'm thinking too. My 05 Escalade does this as well. Seems to be a pretty common problem.

 

[B0$$MAN]

The transfer case is kinda what i'm thinking too. My 05 Escalade does this as well. Seems to be a pretty common problem.

My transfer case has been replaced as well, didn't solve the issue for me.

 

[Wake]

My transfer case has been replaced as well, didn't solve the issue for me.

Wait a minute...

You've had both front and rear differentials rebuilt, new front wheel bearings, new transfer case and you still have the growling?

Well I guess the good news is there isn't much left to replace in the drivetrain before you've replaced everything attached to the engine. WOW!

 

[B0$$MAN]

Wait a minute...

You've had both front and rear differentials rebuilt, new front wheel bearings, new transfer case and you still have the growling?

Well I guess the good news is there isn't much left to replace in the drivetrain before you've replaced everything attached to the engine. WOW!

Yes, I've replaced EVERYTHING, not just to solve the noise problem discussed in this thread, but because the parts needed replacing/restoring. I had the notorious "popping" sound when going over bumps slowly, which caused me to have to restore my front end. I really think when I had the 22's on, with all the weight, they just destroyed my axles; which is why I got rid of them. The HOPE that the sound would go away after those major maintenance repairs was in the back of my head, but nothing happened.

 

[coolchuck]

Im in for your results too. I've got that whine and thought it was bearings but it heard others changed them and still have have noise.

 

[B0$$MAN]

I got my steering gearbox in the other day. It will most likely be going on Tuesday.

If this does not fix the issue, I found a thread that may have answered our prayers. It appears to be the front driveshaft that makes a noise after a ton of miles are put on them. The part is roughly $236 that I found on drivewire.com; OE replacement Remanufactured or $436 for a brand new one.

http://www.realworldautomotive.com/...whine-or-humming-sound-at-certain-speeds.html

 

[ebxgsxr]

you know i started to think something like this could be related. my Jeep had a similar noise, but no where near as loud as my Yukon. i just got my Jeep back from the shop. he was saying there was play in the front driveshaft. i never told him about the noise b/c i didn't think it was that bad. but i do not hear the noise that i heard before.

the same shop is checking out the Yukon. he is doing differential services on the truck. he said the rear fluid looked good, but the front had metal shavings. so he is going to replace the bearings & check the gears to see if there is any damage. i also asked him to check the driveshaft too.

 

[B0$$MAN]

you know i started to think something like this could be related. my Jeep had a similar noise, but no where near as loud as my Yukon. i just got my Jeep back from the shop. he was saying there was play in the front driveshaft. i never told him about the noise b/c i didn't think it was that bad. but i do not hear the noise that i heard before.

the same shop is checking out the Yukon. he is doing differential services on the truck. he said the rear fluid looked good, but the front had metal shavings. so he is going to replace the bearings & check the gears to see if there is any damage. i also asked him to check the driveshaft too.

Definitely post back! I'll have to send back my steering gearbox if its the driveshaft. Something tells me its the driveshaft.

The noise also occurs when letting off the gas and coming to a stop with or without braking.