Transmission has whining all speeds. on 2004 Chevrolet Silverado 2500 HD

No noise when in park, as soon as I put it in any gear it starts.

by in Palm Desert, CA on March 18, 2013
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1 answer
ANSWER by , March 18, 2013
you need a tranny service. tech. will inspect during flush and tell you if you need any further work.