erratic shifting 3 year problem now a nightmare

[kingboydmax]

To start i am running an eastcoast converter with a suncoast stage5 trans, Billet input shaft, suncoast pump regulator spring (no shim). Max trans line pressure 290psi when power-braking, 200 at idle in park, when put into gear from park pressure drops from 200 to 190 and up to 210. Trans temp 150-190. When putting in R or OD goes in aggressively. shifting from 1-2 smooth, 2-3 revs out of gear then slams into 3rd chirping tires, 3-4 has klunky shift, 4-5 smooth. Down shifting 5-4 smooth, 4-3 will lock up tires for a quick second, 3-2 almost locks up, 2-1 downshifts after truck has stopped 0mph. 0 to 80 WOT trans shifts smooth as glass. Driving like pap's 10% throttle shifts smooth exept for down shifts. Valve body solinoids are all brand new from allison. probed All trans and transfer-case wiring found no issue there replace TCM. I am getting five codes PCM P0089, SRS U1000, PCM P0522, PCM P0530, PCM U1026. The two U codes are believing me to think I may have bad module, shorted wire, bad ground. I do have access to a TECH II only on weekends but not sure what to look for once i have the scanner hooked up. Running out of ideas hope some can help me out Thanks.

--------------------------------------------------------------------------
2001 Gmc 2500HD 6.6 5spd 4x4
-Corrilo rods
-Cut and coated stock pistons
-Arp main and head studs
-Balanced rotating assembly
-socal damper and flex plate
-hardend main and rod bearings
-stock cam
-ported heads
-socal valve springs and retainers
-industrial 50% inj.
-industrial 85% cp3
-ppe manifolds and up pipes
-S400 turbo 1.10ex.
-air dog 200
-Efi live by Punisher
5 inch intake and exhaust

 

[catman3126]

Do you have a transgo in there? Might pull it out and look at the springs. was just talkign to mike L about this the other day.

 

[Mike L.]

Check all the modules for codes with a Tech 2.

 

[kingboydmax]

yes i do have a shift kit in the trans. Also i will be putting the trans back together saterday for the third time. Lastweekend i spread out all the internals on a bench and could see no signs of damage not even on the seals. Took apart the valve body for the fourth time none of the valves are hanging up, springs are good, and all of the solinoids are good. Trans pump and regulators are also in good shape. I have pined the harness in the truck also found no shorts, tried ecm and tcm out of an 04 and still had no luck. I will try pulling some more codes asap.

 

[kingboydmax]

For got to add these codes P0842, P0847. Also what should my Output, Turbine, and TPS be in park idling?

 

[Mike L.]

For got to add these codes P0842, P0847. Also what should my Output, Turbine, and TPS be in park idling?

You may have a short to ground with those 2 codes. It is reading both C and D shift valves as being stroked.
Turbine sensor is reading input shaft speed and should be 0. Output sensor is reading rear shaft and should be 0. TPS should be at 0 with foot off the pedal.

 

[kingboydmax]

Mike would you have any trans harness schematics for an 01?