4L80E woes

[Riddle_3d]

i figure i would post a nerw topic for my new problem on the 95 from this morning. it wont shift out of first, even using the manual selector, and gives codes:
DTC 81 - Transmission 2-3 Shift Solenoid Circuit
DTC 82 - Transmission 1-2 Shift Solenoid Circuit
DTC 83 - Torque Converter Clutch
whats kicking these? bad connection?

 

[bison]

Ground problem me thinks.
Check grounds at the firewall dipstick bracket.
Check tranny pass trough connector/harnass for loose,corroded pins.broke wire.

 

[Riddle_3d]

Check grounds at the firewall dipstick bracket.

i had to reroute all my grounds from the engine instll, so should i add another one from the stud on the back of the motor (bellhousing stud) to the frame or cab?

 

[THEFERMANATOR]

If this is for teh 93 in your sig, check the trans plug to see if it is the old style that has a bolt in the middle of it to hold it together. If so I would start ply replacing the internal harness and the pigtail on the truck side with the new style as the early style plug was VERY failure prone and caused all kinds of issues.

 

[Riddle_3d]

thats good info for my 93, but this one is the 95. lol

 

[buddy]

Does your speedo still work?

 

[Riddle_3d]

yup, everything is working fine except the shifting.

 

[bk95td]

Check all fuses with a ohm meter. Check for power to the yellow? wire at the transmission connector. Check for oil contamination in the connector. The large black ground on the rear of the intake manifold is the ground for the transmission. It or other wires may have gotten pinched or cut with the engine transplant. A tech 1 or tech 2 scan tool or GMTDscantech software and a laptop computer can tell you what is going on with the sensors in the transmission. A bad ECM can also do this type of thing. Guess how I know that.