CAR SPEC SHEET

Cadillac ATS Fuse Box: What Each Fuse Does

From the 2019 Cadillac ATS owner's manual. 3 fuse boxes listed.

Engine Compartment Fuse Block

FuseCircuit
1–
2–
3Passenger motorized seat belt
4–
5–
6Driver power seat
7–
9–
10–
11–
12–
13Passenger power seat
14–
15–
16–
17Headlamp washer
18–
19Antilock brake system pump
20Antilock brake system valve
21–
22Driver motorized seat belt
27-/Heated seat 2
28-/Reverse lock out
29Adaptive forward lighting, Automatic headlamp leveling/ Pedestrian protection
30–
31Passenger window switch
32–
33Sunroof
34Front wiper
35Steering column lock
36Rear bussed electrical center/Ignition
37-/Malfunction indicator lamp/ Ignition
38Aeroshutter
39O2 sensor/Emissions
40Ignition coil even/O2 sensor
41Ignition coil odd
42Engine control module
43–
45Washer
48Instrument panel/ Body/Ignition
49Fuel system control module/Ignition
50Heated steering wheel
51Engine control module/Ignition
52Transmission control module/Ignition
53Coolant pump
55–
56Transmission control module
64Adaptive headlamp leveling
65Left HID headlamp
66Right HID headlamp
67Left/Right high-beam headlamp
68Headlamp leveling motor
69Horn
71Cooling fan
72Starter 2
73Brake vacuum pump
74Starter 1
75Air conditioning clutch
76–
8Headlamp washer
23Wiper control
24Wiper speed
25Engine control module
26–
44–
46Rear washer
47Front washer
54Coolant pump
57Low-beam headlamp relay
58High-beam headlamp
59Run/Crank
60Starter 2
61Vacuum pump
62Starter 1
63Air conditioning control
70Horn

Source: owner's manual, PDF pages 277, 278.

Instrument Panel Fuse Block

Location: In the end of the driver side of the instrument panel.

FuseCircuit
2Cupholder motor
3Electric steering column lock
4–
5–
6Tilt and telescopic steering column
8Data link connector
9Glove box release
10Shunt
11Body control module 1
12Body control module 5
13Body control module 6
14–
15Body control module 7
16Transmission control module
17–
18–
19Auxiliary power outlet
20Lighter
21Wireless charger
22Sensing diagnostic module/Automatic occupant sensing
23Radio/DVD/Heating, ventilation/Air conditioning control
24Display
25Heated steering wheel
26Wireless charger
27Steering wheel controls
28–
29Visor vanity lamp
30–
31Retained accessory power/Accessory
32–
33Front heating, ventilation/Air conditioning control blower
CB1Auxiliary power outlet
CB7–
K10Retained accessory power/Accessory
K605Logistics
K644Retained accessory power/Accessory / Glove box release

Source: owner's manual, PDF page 280.

Rear Compartment Fuse Block

FuseCircuit
1Rear driver control module/DC DC transformer
2Left window
3Body control module 8
4Alternate current inverter
5Passive entry/Passive start/Battery 1
6Body control module 4
7Heated mirrors
8Amplifier
9Rear window defogger
10Glass break
11Trailer connector
12OnStar
13Right window
14Electric parking brake
15–
16Trunk release
19Logistics
21Mirror window module
22–
23Canister vent
24Body control module 2
25Rear vision camera
26Front ventilated seats
27Side blind zone alert/ Lane departure warning/External object calculating module
28Trailer/Sunshade
29Rear heated seats
30Semi-active damping system
31Transfer case control module/Rear control drive module
32Theft module/ Universal remote system/Rain sensor
33Park assist
34Radio/DVD
35– /Exhaust valve (V-Series)
36Trailer
37Fuel system control module
38Fuel pump prime/ Exhaust valve (V-Series)
39–
42Memory seat module
43Body control module 3
44–
45Battery regulated voltage control
46Engine control module/Battery
47–
48–
49Trailer module
53–
55–
17Trailer
18Logistics
20Rear window defogger
40Run crank 2 (V-Series)
41Fuel pump prime/ Run crank 2
50Child door lock security
51Rear closure
52Rear closure 2
54Door lock security
56Fuel door

Source: owner's manual, PDF pages 282, 283.

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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