99 sonoma 4x4 front hubs

[winnie 1]

hello...........I have a hum in my front end........can the front axel actuator get stuck and keep the hubs locked........is there a lubrication schedule for the actuator....any help would be appreciated .thanks.ken

[MT-2500]

Originally Posted by winnie 1

hello...........I have a hum in my front end........can the front axel actuator get stuck and keep the hubs locked........is there a lubrication schedule for the actuator....any help would be appreciated .thanks.ken

Does the noise change when you turn the wheels a little right or left when going down the road?

[kmer2110]

I am not the original poster -- but yes, when going straight or turning left the noise is there, when i turn (or corner ) right, it goes away. It also is not present when in 4 wheel drive (low or high) does give trouble sometimes on getting out of four wheel drive.

History -- never ever had the noise until I fixed a vacuum leak t(under the hood -- found it unplugged??) all of a sudden the vents would change as needed (Defroster , heat ...) shortly (30 miles ) the "growl" appeared -- disconnected and the noise got MUCH better , but still there EXCEPT when I turn right?

[MT-2500]

Originally Posted by kmer2110

I am not the original poster -- but yes, when going straight or turning left the noise is there, when i turn (or corner ) right, it goes away. It also is not present when in 4 wheel drive (low or high) does give trouble sometimes on getting out of four wheel drive.

History -- never ever had the noise until I fixed a vacuum leak t(under the hood -- found it unplugged??) all of a sudden the vents would change as needed (Defroster , heat ...) shortly (30 miles ) the "growl" appeared -- disconnected and the noise got MUCH better , but still there EXCEPT when I turn right?

Is this on your car?
Does noise increase with car MPH?
The wheel bearing test is when going staright down road see if noise changes when you turn the steering wheel a little to right or left.