Urgent Help

[tylerwitt34]

So i when i put it in 4 wheel drive it works sometimes but not all the time with this stupid electronic system, but when i lock the hubs then it for sure works. The main problem i got is when i turn the 4X4 off and hit the gas 2 see if there unlock they are but its making this weird noise like a whisss noise from the right side. But i can tell that that tire isn't still in four wheel drive. So i'm wondering if its the hub or maybe a u joint or even the whole hub assy. And advise would be really help full. And if its the hub assembly is it the one with fine threads or 8 stud? I don't think its the trasfer case.

[Patrick]

Sounds like your vacuumn lines are El Crapo. It happens to most of them over time. You can pull the line of and replace it pretty easy.

Next time your in 4x4...when you go back to 2x4 drive in reverse 20 feet and see if that helps with the noise. Sometimes the hubs will stick. I would start there.