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 mounting blocks located in the passenger compartment, trunk and under the hood.


The information on the diagrams is relevant for the 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 mounting boxes here.


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

Diagram of the main driver box
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


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

Diagram of the additional box
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 trunk


The fuse box is located on the left side of the luggage compartment.

Luggage block 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
Related materials
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