hard shift into reverse when cold

[Keith Harrer]

In the morning, when the truck has not run all night it clunks hard into reverse. After a bit of driving the problem goes away until the next morning. Could someone offer me an explanation as to what is going bad?

 

[Vic Sorlie]

Is trans fluid level correct? Total miles on truck and miles since last fluid/filter change? There are many transmission issue threads on this forum; IMO most of them are related to infrequent fluid servicing. Owners here with high-mileage Tracs (and other cars too) and no transmission problems will probably say it's due to their spending a little extra on fluid changes.[Broken External Image]:

 

[Keith Harrer]

I recently put new fluid and filter when I replaced the valve body. I was having the 2-3 flair which is now gone. 2 weeks later this has started. My research has pulled up possibilities of bad u joints or worn splines in the yoke. I was hoping someone else has faced this issue and found the fix. The trac shifts fine other wise. And after I have driven a little the it no longer clunks into reverse. It's only upon the first start up of the day. I have 173000 miles

 

[Vic Sorlie]

Hadn't thought about driveshaft pieces, but that could be it. Notice any noise from that area or differential while driving?

 

[Keith Harrer]

Not that I notice

 

[EddieS'04]

IMO, the clunk is from u-joints or ring and pinion wear.