[jallmann]

I'm experiencing a vibration (noise) from the tranny when going over 60 mph in 4 high and on the throttle. Nothing when coasting. Under 60 it isn't there.

Maybe this is normal? Anyone got any ideas?

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04 Chev 2500HD LB7 Allison CCSB LS 4X4 Silver - 40,000 miles - Stock for now.

 

[skoryaro2]

Do a search for 4x4 vibration droan. Alot of threads on the subject. Many people complain about having the noise.

My .02 - If you are going that fast it shouldn't be in 4x4. I never do over 50MPH in 4x4.