99 Silverado Z71/5.3l./4X4/198,000km/

I was driving back home last night when I punched the accelerator. The truck hesitated a bit, clunked under my feet (tranny) but then drove fine on the way back home. I haven't driven it yet today, but am concerned that some evil has occurred in my transmission. Any ideas (aside from the obvious: take it to a tranny shop). Just looking to the community for some insight. Thanks.

 

My transmission used to clunk when it shifted from 1st to 2nd. I took it to my dealership and got it looked at. They replaced my pressure control solenoid and my powertrain control module and it fixed my problem, also flushed my transmission.

 

thanks for the tip, Michael087. I'll check those two things out.