Front Diff Making Loud Pop

[slammedSI]

we hers the deal. I went to go have some fun yeasterday in the dirt, not hard off roading just some mud, and some trail driving, well I had to go through a creek that had about 5-7 inches of water in the bottom of it, i got out and locked the hubs, got back in and put it in N turned the knob to 4 low, the put it in D. It went through the creek with no problem, like it wasent there. after the creek i put it back in 4 high and drove about a helf mile at very low speed, 5 mph tops. turned around and went through the creek again in 4 low. Every time i put it in N to make the change between 4 high and 4 low. After i got back across the creek i put the hubs back in auto. Well now i have noticed a loud pop that can be felt every where in the truck. I thought that it might not have came out of 4 wheel drive, but i made a 400 mile trip that afternoon, and still got 19mpg. so i know the 4x4 is not ingaged. It sounds like its comming from the front diff, like if the clutches are not comming undone after ingaging 4x4. this only happends when im turning hard left or right. What could this be?

[slammedSI]

Come on any one have any clue to what it could be before i take it in to the dealer..

[jeshoyt]

Marc will be on shortly, he should have an answer for you. I haven't heard of this problem.

[slammedSI]

Yeah i usually relay on Marc for help. I am completey dumbfounded on what it could be, other then the ujoints in the front hubs. but theres no power going to them unless its in 4 wheel drive.

[jeshoyt]

Originally Posted by slammedSI

Yeah i usually relay on Marc for help. I am completey dumbfounded on what it could be, other then the ujoints in the front hubs. but theres no power going to them unless its in 4 wheel drive.

Wish I knew which way to steer ya.
On Chevys, they had a retarded design on their 4WD vacuum system. The Thermal Linear Actuator they used goes bad all the time, just a bad design. The 4wd would just not engage at all. Pretty easy fix, but a kind of tough part to find.

[slammedSI]

Originally Posted by *******

Wish I knew which way to steer ya.
On Chevys, they had a retarded design on their 4WD vacuum system. The Thermal Linear Actuator they used goes bad all the time, just a bad design. The 4wd would just not engage at all. Pretty easy fix, but a kind of tough part to find.

Yeah i had a 04 Chevy 1500 gas truck. the 4wd never would engage beacuse of the computer softwhere. After about 6 trips the the chevy house and 6 different downloads they finally got it fixed.

[mschn99]

take both hublocks out of the hubs. You dont even need to take the tire off. Popp the center cap off and take the metal snap ring that holds the hub off. I have found blugening my fingers is easier than using pliars. Once the ring is off, rock the hub up and down and side to side while pulling till it finally pops out. Once the hub is off, go drive it.....see if it still makes the noise

[slammedSI]

Originally Posted by Marc

take both hublocks out of the hubs. You dont even need to take the tire off. Popp the center cap off and take the metal snap ring that holds the hub off. I have found blugening my fingers is easier than using pliars. Once the ring is off, rock the hub up and down and side to side while pulling till it finally pops out. Once the hub is off, go drive it.....see if it still makes the noise

Ok what do i do after that?

[mschn99]

tell me if it made it go away or not....what you do depends on the results of the test

[slammedSI]

Originally Posted by Marc

tell me if it made it go away or not....what you do depends on the results of the test

Well its stoped making the noise. but i didnt take the hubs out.. i had to make a trip to the store for the wife, but noticed that it didnt make the noise. So what now?