Chevrolet 2002 Astro Owner's Manual page 330

Underhood Fuse Block
The underhood fuse block is located toward the rear
of the engine compartment on the driver's side of
the vehicle.
Lift the hood and open the cover to gain access to this
fuse block.
A fuse puller is included in the underhood fuse block.
You will also find spare fuses.
6-70
Feed Usage
AUX B Upfitter Battery Feed
AUX A Upfitter Accessory Feed