Fuses and relays Chevrolet Tahoe (K2UC), 2013 - 2019

Most of the electrical circuits in the american crossover are protected by fused. Powerful consumers are connected via relays. Most of the protective elements are located in the distribution boxes located in the passenger compartment, trunk and under the hood.

The information provided in the diagrams is relevant for 4th generation Chevrolet Tahoe (K2UC) models 2013, 2014, 2015, 2016, 2017, 2018, 2019.

In the engine compartment

The fuse box is located on the driver's side behind a plastic cover.

General view.

Diagram
No.	Description
1	Retractable footrests
2	Anti-lock brake system pump
3	I / P Fuse Box - Left
4	Passenger belt pretensioner
5	Body leveling compressor
6	4WD all-wheel drive system management
10	Electric parking brake
13	I / P Fuse Box - Left
14	Passenger compartment fuse box - Rear
17	Driver's electric belt tensioner
21	Bleed solenoid - stern leveling system.
23	Suspension control unit / Fuel module control unit
24	Damping system (Magnetic Real Time Dampening)
25	Fuel pump control unit
26	Spare fuse / Adjustable voltage BCM
28	Fuse for accessories 2
29	Additional equipment repeat 2
30	Wiper
34	Reversing lamps
35	ABS valve
36	Trailer braking system
37	Additional equipment repeat 3
39	Trailer - Stop lamp / turn signal - Starboard
40	Trailer - Stop lamp / turn signal - Port side
41	Trailer size lamps
42	Trailer side lights - Right side
43	Trailer Side Lights - Port Side
44	Fuse for accessories 3
45	Aft Leveling System - Ignition Line
47	Fuse for accessories 4
48	Relay accessories 4
49	Reversing lamps - trailer
51	Side light relay
60	A / C Compressor Clutch
63	Fuse for accessories 1
67	12 volt power supply - trailer
69	Remote control of additional equipment 3 and 4
70	Option 3 & 4 Relay Voltage Reference
72	Relay accessories 1
74	Ignition line - engine control unit
75	The spare channel is the ignition line.
76	Automatic transmission - ignition line
77	Remote control of additional equipment 1 and 2
78	Option 1 & 2 Relay Voltage Reference
83	Spare fuse
84	Ignition relay
87	Engine management system sensors - MIAS, FCS
88	Ignition coils - odd
89	Ignition coils - even
90	Oxygen sensor - B
91	Throttle control
92	Relay - engine control unit
93	Signal
94	Fog lights
95	Head lighting - high beam
100	Oxygen sensor - A
101	The engine control unit
102	Engine control unit / automatic transmission control unit
103	Heater module - Rear
104	Starter
107	Aerodynamic flaps
109	Add. equipment (police modification)
112	Starter repeat
114	Front washer motor
115	Rear washer motor
116	Cooling Fan Motor - Left
121	Right LED module / Right xenon module
122	Left LED module / Left xenon module
123	Cooling Fan Motor - Right

In the passenger compartment

There are two distribution boxes here.

Fuse box #1

The main one located at the end of the dashboard on the driver's side.

Diagram
No.	Decoding
1	Not
2
3
4	Center console 12 volt socket
5	Power maintenance system
6	Tacho cigarette lighter fuse / Center console socket (front) 12 volts
7	Programmable remote control
8	Roof hatch drive
9	Not used
10	Body control unit (BCM) 3
11	Body control unit (BCM) 5
12	Illuminated steering wheel control buttons
13	Not
14
15
16	Ignition lock (without TMV)
17	Not used
18	Control buttons for outside rearview mirrors
19	Body control module 1
20	Seat memory unit (ULT)
21	Not
22
23
24	Climate control unit, refrigerator control unit
25	Instrument panel, collision indicators, AIRBAG pillow switch (passenger)
26	Steering column control unit, external spotlights
27	Seat memory unit (A45), DLC connector
28	Climate control unit (rear), keyless entry unit
29	Security and alarm system (motion sensors, siren).
30	Not
31
32
33	Add. equipment (police modification)
34	Parking brake relay, pedal motor relay.
35	Not used
36	Int. rear view mirror, climate control panel (rear), rear view camera, transfer case control.
37	Steering wheel heating control unit
38	Steering column lock control unit.
39	Dashboard, MyLink display, windshield projector (UV6), cool / heat control buttons. seats.
40	Not
41
42	Trailer 12 Volt (with acc. Set)
43	Power window control panel (driver)
44	Driver's seat electric control panel.
45	Not used
46	Seat heating / cooling right
47	Seat heating / cooling, left
48	Not
49
50	12 volt socket
51	Not used
52	Power maintenance relay
53	Repeat ignition / start
54	Not
55
56

Fuse box #2

An additional unit is located at the passenger side of the instrument panel.

Diagram
No.	Description
1	Not
2
3
4	Center console 12 volt socket (rear)
5	Not
6
7
8	Glove box, glove box lock
9	Not
10
11
12	Steering wheel control buttons
13	Body control module 8
14	Not
15
16
17
18
19	Body control module 4
20	Rear infotainment system
21	Sunroof
22	Not
23
24
25
26	AIRBAG, front seat occupancy sensor, TCIM module
27	Rain sensor, power window (passenger).
28	Obstacle detection / USB
29	Audio system
30	Not used
31
32
33
34
35
36	DVD relay, dashboard
37	Not
38	Body control module 2
39	A / C inverter 220 volts
40	Not
41
42
43
44	Right door glass drive
45	Heater fan (front)
46	Body control module 6
47	Body control module 7
48	Audio amplifier
49	Passenger seat control panel
50	Accessory power socket 3
51	Not used
52	Bodywork Power Off Delay Mode / Bodywork Power Outlet Relay
53	Not
54
55
56

In the luggage compartment

The fuse box is located on the left side of the trunk.

Diagram
No.	Decoding
1	Heated rear window
2	Heated left second row seat
3	Heated second row seat, right
4	Heated mirrors
5	Tailgate actuator
6	Luggage compartment glass break sensors
7	Tailgate glass
8	Tailgate control unit
9	Tailgate glass wiper
10	Heater fan motor (rear)
11	Second row seats
19	Rear fog light (if fitted)
12	Tailgate module
13	Third row seats
14	Accessory power outlet
15	Heated rear window
16	Tailgate actuator
17	Tailgate glass
18	Rear fog light (if fitted)
19	Heated mirrors