Chevrolet T-Series Owner's Manual page 255

Fuses Usage
1 Ignition Switch
2 Cigarette Lighter
3 Engine Control Module, Ignition 1
Transmission Control Module,
4
Ignition, Chime
Fuses Usage
5 Assembly Line Data Link Connector
Warning Lamp, Ignition Relay,
Blower Motor, Motor Relay,
6
Auxiliary Relay, Power Window
Relay, Interior Relay
255