Cadillac CT6 Fuse Box: What Each Fuse Does
From the 2020 Cadillac CT6 owner's manual. 3 fuse boxes listed.
Instrument panel fuse block
| Fuse | Circuit |
|---|---|
| F1 | – |
| F2 | – |
| F3 | – |
| F4 | – |
| F5 | High-beam headlamps left/right |
| F6 | – |
| F7 | Front wiper |
| F8 | – |
| F9 | Instrument cluster/ Electric brake control module 1/Central gateway module ignition |
| F10 | – |
| F11 | Transmission control/Transfer case control module ignition |
| F12 | – |
| F13 | Front heated seats ignition |
| F14 | Exhaust valve solenoid |
| F15 | Rear heated seats ignition |
| F16 | Fuel tank zone module ignition |
| F17 | – |
| F18 | – |
| F19 | – |
| F20 | – |
| F21 | Heated steering wheel module/ Reflective light aux display/HVAC IGN/ Automatic occupant sensing display |
Source: owner's manual, PDF page 304.
Engine compartment fuse block
| Fuse | Circuit |
|---|---|
| F1 | Electric brake control module – 2 |
| F2 | – |
| F3 | Headlamp/Daytime running lamps |
| F4 | Right cornering LED |
| F5 | – |
| F6 | Front short range radar sensors |
| F7 | Horn |
| F8 | Air conditioning clutch |
| F9 | – |
| F10 | – |
| F11 | Automatic headlamp leveling |
| F12 | Starter motor |
| F13 | Starter pinion |
| F14 | – |
| F15 | – |
| F16 | – |
| F17 | Cabin heater pump |
| F18 | Transmission auxiliary oil pump cooling |
| F19 | Engine control module ignition |
| F20 | Non walk |
| F21 | Ignition coils – even/ Non walk – 2 |
| F22 | Engine control module ignition – 1 |
| F23 | Transfer case control module |
| F24 | – |
| F25 | Ignition coils – odd |
Source: owner's manual, PDF page 306.
Instrument panel fuse block
| Fuse | Circuit |
|---|---|
| F1 | Auxiliary power outlet front console |
| F2 | Visor |
| F3 | Front blower |
| F4 | Body control module 8 |
| F5 | Steering column switch module |
| F6 | Electric steering column lock |
| F7 | Glove box door |
| F8 | Front heated seat module |
| F9 | Sensing and diagnostic module |
| F10 | Body control module 4 |
| F11 | Body control module 3 |
| F12 | Data link connector |
| F13 | – |
| F14 | Electronic shifter |
| F15 | Front camera |
| F16 | Display |
| F17 | Heating, ventilation, and air conditioning control |
| F18 | OnStar |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | – |
| F23 | Central gateway module |
| F24 | Center stack module/ Infotainment |
Source: owner's manual, PDF page 308.
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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