Chevrolet 2004 Classic Owner's Manual page 296

Relays Usage
17 Not Used
18 Fuel Pump
19 Automatic Headlamp System
20 Automatic Headlamp System
21 Horn
22 Daytime Running Lamps (DRL)
Fuses Usage
23–32 Spare Fuse Holder
33 Rear Defogger
Accessory Power Outlets, Cigar
34
Lighter
35 Not Used
36 Not Used
Air Conditioning Compressor, Body
37
Function Control Module
38 Automatic Transaxle
Powertrain Control Module (PCM),
39
Ignition
40 Anti-Lock Brakes (ABS)
5-94
Fuses Usage
41 Ignition System
Back-Up Lamps, Shift Lock Control
42
System
43 Horn
44 PCM
45 Parking Lamps
46 Climate Control System
Canister Purge Valve, PCM,
47 Exhaust Gas Recirculation, Heated
Oxygen Sensor
48 Fuel Pump Injectors
49 Not Used
50 Right Headlamp
51 Left Headlamp
52 Cooling Fan
53 HVAC Blower (Climate Control)
54 Not Used
55 Not Used
56 Fuse Puller
57 Not Used