Worn clutch disc on top left, worn bushing on the right.

Worn bushing causes wear in E piston

Piston seal deterioration.

When the 6hp26 is removed we always have to look for greenish leaks from crank seal and upper coolant passage. This one was leaking from the upper passage.

Mechatronics seal in the 6hp26 and 6hp19 will crack with age and miles and cause the trans to leak pressure. The common characteristic of this is when you shift into drive or reverse it immediately shifts itself back into park

Mechatronics seal in the 6hp26 and 6hp19 will crack with age and miles and cause the trans to leak pressure. The common characteristic of this is when you shift into drive or reverse it immediately shifts itself back into park

These two pics show wear from mileage and improper service regimens.

This E Clutch was in a lower mileage 6hp26 that had been run low on fluid from a leak that was left unattended. If you service with us regularly, we catch these leaks early so you won't need expensive services like these, as early as shown in this case.

This is the same 6hp26 transmission with low mileage wear from unattended leaks.

The pan on the left is for non-stop/start transmissions. The stop/start transmissions, on the right have a reservoir that holds fluid and pressure and keeps fluid moving through the transmission when the vehicle stops.

Another view of a cracked mechatronics seal on the right. The pic above is the mechatronics/valve body and the seal is sandwiched between it and the transmission body, inside the pan.