GM Chevrolet Avalanche - Manual (Page 372)

Power Steering Fluid
See Engine Compartment Overview on page 5-14 for
reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering fluid
unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.
5300 V8 engine
8100 V8 engine
5-38