New "klunk" on shifting..what is it?

[Full Monte]

Hi Guys,

Yesterday I noticed a klunk when the 4speed auto shifted from 1st to 2nd gear. This happens at approx. 11mph. Any ideas what is happening and how to fix it?

Thanks,
Monte

 

[The Warden]

If you haven't recently, it'd be worth it to take a look at the flex couplings on the driveshaft...although you didn't say if it's making any noise going from Reverse into Drive, so that isn't all that likely.

Also, how's the tranny fluid?

 

[Full Monte]

Warden,

I'll check those items. The tranny oil, filter were replaced a few thousand miles ago. Thanks for the leads.

Monte