See also:

Engine Air Cleaner/Filter
See Engine Compartment Overview for the location of the engine air cleaner/filter. ...

Engine Compartment Overview
When you open the hood on the 4.2L L6 engine, here is what you will see: A. Engine Air Cleaner/Filter. B. Engine Coolant Recovery Tank. C. Windshield Washer Fluid Reservoir. D. Power Steering Fl ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfer ...