GMC Sonoma 2001 Owner's Manual page 278

When you open the hood on the "VORTEC" 4300 V6 engine, you'll see:
A. Battery
B. Coolant Recovery Tank
C. Engine Oil Dipstick
D. Engine Oil Fill
6-12
E. Automatic Transmission Dipstick
F. Power Steering Reservoir
G. Brake Master Cylinder
H. Engine Air Cleaner/Filter
I. Engine Compartment
Fuse Block
J. Windshield Washer
Fluid Reservoir