Your nut has come loose - but your wiper transmission is going to look stripped. Simple fix --- remove the nut and the wiper arm. Take a sharp pick (I prefer one with a 90 deg. angle on it) and pull the pick vertically on the wiper transmission stud (just below where the nut came off). You will notice a whole bunch of fine grooves in the transmission stud. Clean all of the grooves out. Reinstall the wiper arm in its original position. Next apply some high-strength threadlocker (usually red in color) to the nut. Tighten nut securely. This situation is normally caused from either loose nuts on the wiper transmission or from excessive force being applied to the wiper arms, such as forcing them across a windshield that is covered in snow/ice. I suggest repeating this procedure to the other side as well just as a precaution.
There is a nut under the plastic cover at the base of the arm.
In the top left corner of your car facing the hood close to the windshield
The 2000-2010 Chevrolet Impala takes 22" replacement windshield wiper blades on both sides front.
Chevrolet Impala was created in 1958.
Where is the windshield fluid pump located on a 2007 impala
1985 Chevrolet impala
The 2000 Chevrolet Impala parking brake will have an adjustment bolt on the parking brake assembly. Turn the adjustment bolt to loosen or tighten the parking brake.
The 2006 Chevrolet Impala has 12 valves.
The 2004 Chevrolet Impala has 12 valves.
The 2014 Chevrolet Impala has 16 valves.
The 2010 Chevrolet Impala has 12 valves.
The 2003 Chevrolet Impala has 12 valves.