[mcsew2k]

This was the fix. Shifts great and runs fantastic. No more transmission codes and no more limp mode. All transmission issues are gone. Battery is charging. No more low voltage codes from other sensors.

Remaining issue is the gas gauge; reads full when full, but drops to empty after a few miles and stays there until I fill it up again. I believe this is preventing my PCM from running all the built in testing. Catalyst, Evap, and O2 Sensor tests will not complete, I think because gas gauge is ALWAYS either FULL or EMPTY.

 

[mcsew2k]

When I turn the key on and off several times, the gas gauges reads correct for a while, then drops to empty again. At least it passed the smog test today.

 

[immattj]

Thanks for the updates.
Do you think that the sender might be the fuel quantity issue?

 

[mcsew2k]

I am researching how to test the sender without dropping the tank or removing the bed. I inspected the wiring and it seems OK. I already replaced the computer for other reasons and it is still intermittent; mostly not working.

 

[immattj]

I am researching how to test the sender without dropping the tank or removing the bed. I inspected the wiring and it seems OK. I already replaced the computer for other reasons and it is still intermittent; mostly not working.

My bet is on the sending unit.