Slipping trans after rebuild.

[NickTransmissions]

@NickTransmissions makes sense. Super weird. I bought a kit made for a 03 4l60. So not sure why the thinner steels were in there. Oh well ig for sure.

What kit did you buy?
Reply with a link to the kit.

 

[BradHanks15]

Thanks again btw.

JEGS 62140: 4L60E Transmission Rebuild Kit for 1997-2003 GM - JEGS

Purchase a 4L60E rebuild kit online. This 4L60E transmission rebuild kit for 1997-2003 GM comes with everything you need to give your transmission a performance boost. Our all-in-one 4L60 rebuild kit is made in the USA. Buy your new 4L60E complete rebuild kit from JEGS High Performance today!

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@NickTransmissions

 

[BradHanks15]

@NickTransmissions I am putting air to this hole but the 3-4s don’t seems to be moving. What could cause that?

 

[BradHanks15]

@NickTransmissions I am putting air to this hole but the 3-4s don’t seems to be moving. What could cause that?

Just seems to be moving the forward piston. Testing the hole on the input drum outside of the pump moves the 3-4 just fine.

 

[NickTransmissions]

Just seems to be moving the forward piston. Testing the hole on the input drum outside of the pump moves the 3-4 just fine.

Check your input shaft sealing rings...If you have already checked them and they're fine, you'll need to dig into it a bit further to see what the problem is.

 

[BradHanks15]

@NickTransmissions theyve been replaced and look ok. All the other circuits are working. Where would you recommend looking?