For a source of information it would pay you to purchase a Haynes Manual. They make them for specific cars so that way you are not buying information you do not need.
Using new bolts, torque the front hub/bearing assembly to 96 ft-lbs.....
A wheel bearing is pressed in to the hub so that it is able to safely operate. To replace a bearing on a Chevy Impala remove the hub from the car and take the unit to a machinist. Have the press out the old bearing and press in the new one.
Behind the heater core in the HVAC assembly. The assembly is behind the radio.
could be a bad bearing on the air conditioner clutch assembly.
Chevrolet Impala was created in 1958.
1985 Chevrolet impala
The car used is a 1961 Chevrolet Impala 4-door (in very "used" condition).
As per the instructions on page 5-55 of your "Owner's Manual"...
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.