metallic chatter from left rear

By tnord
October 2, 2006 in Ask A GM Technician

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tnord

Posted October 2, 2006

after driving around for a little while, and when i come back down to low speed (it seems to be worse when turning) i can hear a metallic chattering coming from what sounds like the left rear wheel. i'm worried this is going to be an axle/diff problem, since i can only hear it after i've been driving a while (say 10min) i'm guessing this gives the boot grease/diff fluid a chance to get hot. the rear diff fluid i just changed this spring with amsoil 75/90 if that makes a d**n bit of difference.

truck is a 2001 5.3 Z71 4x4 with 109k miles.

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