Thanks in advance for any and all assistance received.
I have an '08 H3 Alpha. I rebuilt the 4l60e and installed last weekend. On test drive, I had no 4th gear. I also noticed the gear shifter would not come out of park, had to manually depress the solenoid release button under console. Additionally, the automatic door locks no longer functioned. I used my tech2 scanner monitor the transmission, but 4th was never commanded. I commanded 4th with the tech2 and got an error regarding transmission range with engine running. Many hours of troubleshooting later, I found that I have voltage present on pins 3,4,5,6,8,& 11 of the range switch connector.

N. Safe switch
Only pins 11 & 12 should have voltage. Pin 7 should be a ground, but it is not. From the wiring diagrams, the gear ranges are common to ground as the switch rotates. I'm looking for confirmation or a word or two saying I'm waaaay out of bounds. If my testing is correct, my TCM is toast.

 

make sure the harness is not pinched between the engine and bell housing.

 

Great idea, but I checked that early on. Seems if that were the culprit, fuses would blown.

 

Update****
I removed the TCM and rung out both the connector and the module itself. All connector pins that should be powered and those for ground were also correct. I checked the module itself and all pins that should be low or ground were. No other pins had commonality. When I plugged the module back in, the wires that went to the range selector switch were hot. Unless the TCM is looking for a short as an input, the module is toast. I cannot find any information if this is true or not.