I am having a humming sound that I think might be the t case. My 98 5.2l has 214k miles and I've never had and issues. We replaces the from ring/pinion because that corrected the problem in the past. This time no go. The sound only occurs when the front drive shaft is installed and goes away when it's removed. Does the VC in the t case make a humming/whirling sound when it's bad?
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