In this article you will find a description of fuses and relays Chevrolet,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Engine Compartment Fuse Block
The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle.
Fuses | Usage |
1 | Trailer brake |
2 | Trailer battery |
3 | ABS pump |
4 | Instrument panel BEC 1 |
5 | MSB passenger |
6 | 4WD transfer case electronic control |
7 | Electronic park brake |
8 | Instrument panel BEC 2 |
9 | MSB driver |
10 | Rear window defogger |
11 | Starter |
12 | Cooling fan 1 |
13 | Cooling fan 2 |
14 | Left trailer stop/ Turn lamps |
15 | Trailer reverse lamps |
16 | Trailer reverse lamps |
17 | Right trailer stop/ Turn lamps |
18 | Fuel Pump |
19 | Integrated Chassis Control Module |
20 | Electronic Suspension Control Module |
21 | Fuel Pump Power Module |
22 | Upfitter 1 |
23 | Upfitter 2 |
24 | Front Wiper |
25 | ABS Valves |
26 | Upfitter 2 |
27 | Upfitter 3 |
28 | Right parking lamps |
29 | Left parking lamps |
30 | Upfitter 3 |
31 | Upfitter 4 |
32 | Upfitter 4 |
33 | Reverse lamps |
34 | Engine control module/Ignition |
35 | A/C clutch |
36 | Heated Mirrors |
37 | Upfitter 1 |
38 | Center high-mount stoplamp |
39 | Miscellaneous/ Ignition |
40 | Transmission/ Ignition |
41 | Fuel Pump 2 |
42 | Cooling Fan Clutch |
43 | Engine |
44 | Fuel injectors A-odd |
45 | Fuel injectors B-even |
46 | O2 Sensor B |
47 | Throttle Control |
48 | Horn |
49 | Fog Lamps |
50 | O2 Sensor A |
51 | Engine control module |
52 | Interior heater |
53 | Accessory power module/TPM pump |
54 | Front washer |
55 | A/C/Battery regulated voltage contro |
56 | A/C module/ Battery pack |
57 | Transmission control module/ Engine control module |
58 | Headlamps |
59 | Fuel pump |
Relays | Usage |
60 | Upfitter 2 |
61 | Upfitter 3 |
62 | Upfitter 4 |
63 | Trailer Parking Lamps |
64 | Run/Crank |
65 | Upfitter 1 |
66 | Fuel Pump 2 |
67 | A/C Control |
68 | Starter |
69 | Rear window defogger |
70 | Engine control module |
71 | Cooling fan clutch |
72 | CKT 95 |
73 | CKT 92 |
Instrument Panel Fuse Block (Left)
The left instrument panel fuse block access door is on the driver side edge of the instrument panel.
Number | Usage |
1 | Accessory Power Outlet 2 |
2 | SEO /Retained Accessory Power |
3 | Universal garage door opener/Interior rearview mirror |
6 | Body Control Module 3 |
7 | Body Control Module 5 |
8 | Driver Window Switch/Mirror Switch |
9 | — |
10 | Accessory power outlet/Retained accessory power |
11 | Accessory Power Outlet Battery |
12 | Accessory Power Outlet 1/Cigarette Lighter |
13 | Discrete Logic Ignition Switch |
14 | Switch Backlighting |
17 | Body Control Module 1 |
19 | — |
20 | — |
22 | HVAC/Auxiliary HVAC/Ignition |
23 | Instrument cluster/ Ignition sensing diagnostic module/ Ignition |
24 | — |
25 | Data Link Connector/ Driver Seat Module |
26 | Passive entry/Passive start/HVAC |
27 | — |
28 | — |
29 | Park enable/ Electrically adjustable pedals |
30 | SEO |
31 | Accessory/Run/Crank |
32 | Heated Steering Wheel |
33 | — |
34 | Instrument Cluster |
36 | — |
37 | — |
38 | 4WD TREC |
40 | Left Doors |
41 | Driver Power Seat |
43 | Left heated, cooled or ventilated seats (if equipped) |
44 | Right heated, cooled or ventilated seats (if equipped |
45 | — |
49 | Retained Accessory Power/Accessory |
50 | Run/Crank |
Instrument Panel Fuse Block (Right)
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel.
Number | Usage |
1 | Accessory Power Outlet 3 |
2 | Accessory Power Outlet 4 |
7 | Body Control Module 4 |
8 | Body Control Module 8 |
9 | Rear Seat Entertainment |
10 | Cargo Lamp |
15 | Steering Wheel Controls |
18 | Radio |
19 | — |
20 | Sunroof |
23 | Airbag/Info |
26 | Export/Power Take Off/SEO Battery 1 |
27 | Obstacle Detection/ USB Ports |
28 | Body Control Module 2 |
32 | SEO Battery 2 |
35 | AC Inverter |
36 | Amplifier |
37 | — |
39 | Rear Sliding Window |
42 | Right Door Window Motor |
43 | Front Blower |
44 | SEO |
45 | Body Control Module 6 |
46 | Body Control Module 7 |
47 | Passenger Seat |
50 | Retained Accessory Power/Accessory |
51 | Rear Sliding Window Open |
52 | Rear Sliding Window Close |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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