I just had my manual trans rebuilt in my 94 and sometimes usually after its been on the road awhile when I acclerate I hear a squeaking noise that sounds like its coming from under the truck. It only last 3 or 4 seconds and I have heard it in 2nd and 3rd gears. Its not a belt squill and I dont have to gas it hard to hear it. Please help, any ideas???

 

First thing I'd check is the driveshaft u-joints. Any of them feel stiff or show rust dust around the bearing caps? The forward joint may be starting to bind...esp. if it was disturbed to pull the trans.

 

Other than the sound does it seems as if anything odd is happening?

 

No it doesnt