2011 Buick Regal Questions

All 2011 Buick Regal Questions

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-ment or just throttle position sensor? Eng. derates ,but all is ok after shutting off and restarting.
Dealer tried to reprogram but said it didn't work. Need to know if I have to replace the module (very expensive) or if there's something else that will work.
Catalyst System Bank 1 Low Efficiency and HO2S-11 (Bank 1 Sensor 1) Circuit Low Input Thanks in advance for any help given.
Gauge goes ip and down , when filling up it stops but nevr r readd full on gauge
The cord is dangling and I want to reconnect it ASAP!