GMC SIERRA 2020 Owner's Manual page 373

372 Vehicle Care
Fuses Usage
1 High-beam left
Fuses Usage
2 High-beam right
3 Headlamp left
Fuses Usage
4 Headlamp right
6 TIM
7
8 Fog lamp
9 VKM
10
11 Police upfitter
12
13 Washer front
14 Washer rear
15 MSB driver
16
17 IECL 1
19 DC/AC inverter
20 IECR 2 (LD) /
EBCM2 (HD)
21 MSB pass
22 IECL 2
24 EBCM 1
25 REC