2017 - 2020 Chevrolet Impala Fuse Box Diagram

2018 chevy impala

Fuses and Circuit Breakers

The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.

Danger
Fuses and circuit breakers are marked with their ampere rating.
Do not exceed the specified amperage rating when replacing fuses and circuit breakers. Use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
To check a fuse, look at the silver-colored band inside the fuse.
If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location, if a  fuse goes out. Replace the fuse as soon as possible.
To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse  Block, and Instrument Panel Fuse Block .

Engine Compartment Fuse Block

The engine compartment fuse block is on the driver side of the engine compartment, near the battery.

Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the
covers on any electrical component.

Engine Compartment Fuse Block Diagram

The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuses Usage
1 Transmission control module battery
2 Engine control module battery / A/C Clutch
3 A/C clutch
4 Engine control module battery
5 Engine control module/Ignition
6 Front wiper
7 Engine control module ignition
8 Ignition coils – even
9 Ignition coils – odd
10 Engine control module
11 Miscellaneous 1
12 Starter
13 Transmission control module/Chassis control module/ Ignition
14 Cabin Coolant pump
17 Body/Ignition 2
18 Battery disconnect unit/Ignition
19 Aeroshutter
20 Transmission auxiliary pump
21 Rear power window
22 Sunroof
23 Adaptive cruise control
24 Front power window
25 Retained accessory power
26 ABS pump
27 Electric parking brake
28 Rear defogger
29 Passive entry/Passive start
30 Canister vent solenoid
31 Heated seat, driver
32 Body control module 6
33 Heated seat, passenger
34 ABS valve
35 Amplifier
37 Right high-beam headlamp
38 Left high-beam headlamp
41 Vacuum pump
42 Cooling fan high speed
44 Starter 2
45 Cooling fan low speed
46 Cooling fan control
47 Miscellaneous 2
49 Right HID headlamp
50 Left HID headlamp
51 Horn/Dual horn
52 Display/Ignition
53 Body/Ignition
54 Instrument panel/ Ignition
55 Exterior rearview mirror
56 Front washer
60 Heated mirror
62 Obstacle detection
64 Rain sensor/Rear seat audio
66 Trunk release
67 Chassis control module
69 Battery voltage sensor
71 Memory seat

Relays Usage
1 A/C clutch
2 Starter pinion
4 Front wiper speed
5 Front wiper control
6 Cabin Coolant pump
7 Powertrain
8 Transmission auxiliary pump
9 Cooling fan high speed
10 Cooling fan low speed
11 Starter
13 Cooling fan control
14 Low-beam HID headlamp
15 Run/Crank
17 Rear defogger

Instrument Panel Fuse Block

The instrument panel fuse block is in the instrument panel, on the driver side of the vehicle.

Instrument Fuse Block location

To access the fuses on vehicles equipped with a storage bin:
1. Push forward on the top edge of the bin to unlatch it.
2. Press in on the sides of the bin to release it from the instrument panel.
3. Pivot the door downward, allowing it to hang from the instrument panel.
4. To close the bin, swing it upward and push in until closed

To access the fuses on vehicles not equipped with a storage bin:
1. Pull the lower edge of the cover rearward. The clips on the lower edge will release,
and the upper edge will fall away from the instrument panel.
2. To replace the cover, hook the upper edge of the cover on the instrument panel, and swing the lower edge of the cover into place.
3. Press the lower edge of the cover until the clips engage.

 

Instrument Fuse Block Diagram

 The vehicle may not be equipped with all of the fuses, relays, and features shown.

Mini Fuses ... Usage
1 Wireless charging
2 Rear stoplamps/ Courtesy lamps/ Reverse lamps/Shift lock solenoid/Puddle lamps
3 LED indicator light
4 Radio 

5 Cluster/Auxiliary jack/HMI/USB/Radio display/CD player 

6 Console power outlet (Cigarette Lighter)
7 Rear console power outlet
8 Trunk release/Brake pedal apply/Keyless start indicators/ Hazard switch  illumination/CHMSL/ Brake relay/ Sidemarker lamps/ Washer relay/Run/ Crank relay
9 Trunk lamp/Right low-beam headlamp/ DRL/Right front turn lamp/Right rear parking lamp/
Stoplamp
10 Door unlock
11 Front HVAC (Heating, ventilation, and air conditioning) blower
12 Passenger power seat
13 Driver power seat
14 Diagnostic link connector
15 Airbag/SDM
16 Right rear heated seat
17 HVAC (Heating, ventilation, and air conditioning) Controller
18 Logistics
19 Left rear heated seat
20 Ignition switch
21 Telematics
22 Steering wheel controls
23 Left low-beam headlamp/DRL/Left front turnlamp/Left rear parking lamp/ Stoplamp/Child lock relay
24 Theft deterrent LED/ Key capture solenoid/Run relay
25 Tilt/Telescoping steering column

26 110V AC
 

Relays ... Usage

K1 –
K2 Logistic
K3 Power outlet relay