2002 1500 4x4 just started over-revving(2500rpm's)before shifting into 2nd, 3rd and drive. o/d is not depressed and fluids are fine. sounds like fan is much louder until it shifts, as well. any guesses?

thanks in advance. cheers.

 

If your not throwing any codes, drop the pan and change both the filters. Complete fluid flush is due every60kmi and I would n't run the filters longer than 100kmi

 

No codes. I've never done tranny work but i'm handy. something i can do myself and clogged filters would cause this? thanks much for your response. cheers.

 

Fluids and filters were clean and had been changed recently. Any chance this may be an electrical problem? Thanks.