CAR SPEC SHEET

Chevrolet Silverado LD and 2500HD/3500HD Fuse Box: What Each Fuse Does

From the 2019 Chevrolet Silverado LD and 2500HD/3500HD owner's manual. 2 fuse boxes listed.

Engine Compartment Fuse Block

FuseCircuit
1Trailer brake
2Trailer battery
3Antilock brake system pump
4Instrument panel BEC 1
5Passenger motorized seat belt
64WD transfer case electronic control
7Electric parking brake
8Instrument panel BEC 2
9Driver motorized seat belt
10Rear window defogger
11Starter
12Cooling fan 1
13Cooling fan 2
14Left trailer stop/ Turn signal lamps
15Trailer parking lamps
16Trailer reverse lamps
17Right trailer stop/ Turn signal lamps
18Fuel pump
19Integrated chassis control module
20Electronic suspension control module
21Fuel pump power module
22Upfitter 1
23Upfitter 2
24Front wiper
25Antilock brake system valve
26Upfitter 2
27Upfitter 3
28Right parking lamps
29Left parking lamps
30Upfitter 3
31Upfitter 4
32Upfitter 4
33Reverse lamps
34Engine control module/Ignition
35Air conditioning clutch
36Heated mirrors
37Upfitter 1
38Center high-mounted stoplamp
39Miscellaneous/ Ignition
40Transmission/ Ignition
41Fuel pump 2
42Cooling fan clutch
43Engine
44Fuel injectors A – odd
45Fuel injectors B – even
46O2 Sensor B
47Throttle control
48Horn
49Fog lamps
50O2 Sensor A
51Engine control module
52Interior heater
53Accessory power module/TPM pump
54Front washer
55Air conditioning/ Battery regulated voltage control
56Air conditioning module/ Battery pack
57Transmission control module/ Engine control module
58Headlamps
74Electric running boards
76Fuel pump prime / MGU motor
77Cabin pump motor
79Vacuum pump
59Fuel pump
60Upfitter 2
61Upfitter 3
62Upfitter 4
63Trailer parking lamps
64Run/Crank
65Upfitter 1
66Fuel pump 2
67Air conditioning control
68Starter
69Rear window defogger
70Engine control module
71Vacuum pump/ Cooling fan clutch
72CKT 95
73CKT 92
75Fuel pump prime/ MGU motor
78Vacuum pump switch

Source: owner's manual, PDF pages 365, 366, 367.

Instrument Panel Fuse Block (Left)

Location: The left instrument panel fuse block access door is on the driver side edge of the instrument panel.

FuseCircuit
1Accessory power outlet 2
2Special equipment option/Retained accessory power
3Universal remote system/Interior rearview mirror
6Body control module 3
7Body control module 5
8Driver window switch/ Mirror switch
9–
10Accessory power outlet/Retained accessory power
11Accessory power outlet battery
12Accessory power outlet 1/Cigarette lighter
13Discrete logic ignition switch
14Switch backlighting
17Body control module 1
19–
20–
22Heating, ventilation, and air conditioning/ Auxiliary heating, ventilation, and air conditioning/Ignition
23Instrument cluster/ Ignition sensing diagnostic module/ Ignition
24–
25Data link connector/ Driver seat module
26Passive entry/Passive start/Heating, ventilation, and air conditioning
27–
28–
29Park enable/ Electrically adjustable pedals
30Special equipment option
31Accessory/Run/Crank
32Heated steering wheel
33–
34Instrument cluster
36–
37–
384WD transfer case electronic control
40Left doors
41Driver power seat
43Left heated, cooled or ventilated seats (if equipped)
44Right heated, cooled or ventilated seats (if equipped)
45–
49Retained accessory power
50Run/Crank

Source: owner's manual, PDF pages 370, 371.

Listings are copied as text from the manual's fuse tables (AI-assisted; every circuit name was matched against the cited pages 2026-10-18). Fuse layouts can differ by trim and year; check the label on the fuse box cover before replacing a fuse, and always use the same amp rating.

Confirm with your own manual, dipstick or door-jamb label.
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