Gas efficiency plummet

[Plumberscrack]

2004 1500 5.7 hemi 4wd. Recently noticed my gas efficiency has plummeted. Also noticed a red symbol with a lightning bolt come on on my dash but them went away. Havedone some research and found that it could possibly be the throttle body not working properly. Any thoughts would be much appreciated.

 

[Ramember when]

2005 1500 here, same issue. Need to possibly relearn TB Sensor but it's not working for me, aggravating

 

[Daw14]

Check for sticking brake calipers, check for codes , clean the throttle body.