Short story: Today while replacing TCC lockup Solenoid on my 2000 Blazer ZR2 I found a check ball on the ground! I don't know where it came from. Is this something i can just stick back where it goes without removing valve body?? Thanks! I've never disassembled any further than just the pan and don't want to get myself in a jam.

Long story: This is actually the second time I've replaced the TCC Solenoid this week. Last week, I replaced the TCC Solenoid and A & B solenoids. When I started it up, I had an immediate code P0740 pop up, and the trans was behaving extremely erratic, leaving the truck un-driveable for a week, until today when I finally had a chance to disassemble again​​​​​​.
I assumed i had spliced the wiring to the new TCC Solenoid incorrectly. So, once again, I removed pan, filter, PWM Solenoid (to access the TCC Lockup) and finally the TCC Lockup solenoid to inspect my rushed splice job.
I then noticed a check ball on the ground next to me.. and shiit my pants. I didn't SEE it fall.. i just happened to notice it (Fortunately, before re-assembly)
This was on the ground, mind you, not in the pan. Where could it have come from?? Do I really need to remove the entire valve body to put it back?
This blows.. lol.

 

There is nothing you removed that would allow a check ball to make a run for it.�� Could you give a close guess on diameter?

 

No idea how to measure it. Its smaller than a BB for a BB gun, as comparison. It definitely came from the vehicle, because I had layed out a tarp underneath the vehicle prior to pulling the pan off. So the ball was sorta 'standalone' which is what made it noticeable in the first place.

 

That is out of the snout of the shift solenoids or the converter clutch/PWM solenoid. Look at the end of the solenoids that go in the VB and make sure the screens are in place. The ball will come loose and push the screens out. Or a broken shift solenoid will allow the ball to fall out. Replace the broken solenoid. Real common to break the shift solenoids when dropping the pan if not careful.

 

Yes! Thank you Transman. I had a feeling the ball came from a solenoid but was not aware they had ***** (Ha.Ha.) to come to that conclusion. I'll replace the PWM and put it all back together. Glad I didn't pull the VB off
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