2012 CHEVROLET SUBURBAN Owners Manual

Black plate (35,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
Vehicle Care 10-35
2. Remove the two screws from thetaillamp assembly.
3. Pull the taillamp assembly rearward disengaging the two
outer pins on the taillamp
assembly from the vehicle. 4. Turn the bulb socket
counterclockwise to remove it
from the taillamp assembly.
5. Pull the old bulb straight out from the bulb socket.
6. Press a new bulb into the bulb socket and install the socket into
the taillamp assembly by turning
it clockwise.
7. Reinstall the taillamp assembly. When reinstalling, make sure to
line up the pins on the taillamp
assembly with the vehicle.
If this is not done, the taillamp
assembly will not be able to be
installed correctly.
License Plate Lamp
1. Remove the two screws holdingeach of the license plate lamps
to the molding that is part of the
liftgate.
2. Twist and pull the license plate lamp assembly forward through
the molding opening.
3. Remove the bulb socket from the lamp assembly by turning it
counterclockwise.

Black plate (36,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
10-36 Vehicle Care
4. Pull the bulb straight out of thesocket and install the new bulb.
5. Reverse Steps 1 through 3 to reinstall the license plate lamp.
Replacement Bulbs
If the vehicle is a hybrid, see the
hybrid supplement for more
information.
Exterior Lamp Bulb
Number
Back-up Lamp 7441
License Plate Lamp W5WLL
Rear Turn Signal
Lamp, Taillamp, and
Stoplamp 3057K
Side Marker Lamp 194
For replacement bulbs not listed
here, contact your dealer.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed.
This greatly reduces the chance of
circuit overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road
and a fuse needs to be replaced,
the same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have
the headlamp wiring checked right
away if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.

Black plate (37,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
Vehicle Care 10-37
Fuses and Circuit
Breakers
If the vehicle is a hybrid, see the
hybrid supplement for more
information.
The wiring circuits in the vehicle
are protected from short circuits by
a combination of fuses, circuit
breakers and fusible thermal links.
This greatly reduces the chance of
fires caused by electrical problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
you replace a bad fuse with a new
one of the identical size and rating.
If you ever have a problem on the
road and don't have a spare fuse,
you can borrow one that has the
same amperage. Just pick somefeature of your vehicle that you
can get along without
–like
the radio or accessory power
outlet –and use its fuse, if it is the
correct amperage. Replace it as
soon as you can.
Engine Compartment
Fuse Block
The Engine Compartment Fuse
Block is located in the engine
compartment, on the driver side of
the vehicle. Lift the cover for access
to the fuse/relay block. If the vehicle is a hybrid, see the
hybrid supplement for more
information.
Notice:
Spilling liquid on any
electrical component on the
vehicle may damage it. Always
keep the covers on any electrical
component.
To remove fuses, hold the end of
the fuse between your thumb and
index finger and pull straight out.

Black plate (38,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
10-38 Vehicle Care

Black plate (39,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
Vehicle Care 10-39
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
1 Right Trailer Stop/
Turn Lamp
2 Electronic Stability
Suspension Control,
Automatic Level
Control Exhaust
3 Left Trailer Stop/
Turn Lamp
4 Engine Controls
5 Engine Control
Module, Throttle
Control
6 Trailer Brake
Controller
7 Front Washer
8 Oxygen Sensors
9 Antilock Brakes
System 2 Fuses
Usage
10 Trailer Back-up
Lamps
11 Driver Side
Low-Beam Headlamp
12 Engine Control
Module (Battery)
13 Fuel Injectors, Ignition
Coils (Right Side)
14 Transmission Control
Module (Battery)
15 Vehicle Back-up
Lamps
16 Passenger Side
Low-Beam Headlamp
17 Air Conditioning
Compressor
18 Oxygen Sensors
19 Transmission Controls
(Ignition)
20 Fuel Pump Fuses
Usage
21 Fuel System Control
Module
22 Headlamp Washer
23 Rear Windshield
Washer
24 Fuel Injectors, Ignition
Coils (Left Side)
25 Trailer Parking Lamps
26 Driver Side Parking
Lamps
27 Passenger Side
Parking Lamps
28 Fog Lamps
29 Horn
30 Passenger Side
High-Beam Headlamp
31 Daytime Running
Lamps (DRL) (If
Equipped)
32 Driver Side
High-Beam Headlamp

Black plate (40,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
10-40 Vehicle Care
FusesUsage
33 Daytime Running
Lamps 2 (If Equipped)
34 Sunroof
35 Key Ignition System,
Theft Deterrent
System
36 Windshield Wiper
37 SEO B2 Upfitter
Usage (Battery)
38 Electric Adjustable
Pedals
39 Climate Controls
(Battery)
40 Airbag System
(Ignition)
41 Amplifier
42 Audio System
43 Miscellaneous
(Ignition), Cruise
Control Fuses
Usage
44 Liftgate Release
45 Airbag System
(Battery)
46 Instrument Panel
Cluster
47 Not Used
48 Auxiliary Climate
Control (Ignition)
49 Center High-Mounted
Stoplamp (CHMSL)
50 Rear Defogger
51 Heated Mirrors
52 SEO B1 Upfitter
Usage (Battery)
53 Accessory Power
Outlet
54 Automatic Level
Control Compressor
Relay Fuses
Usage
55 Climate Controls
(Ignition)
56 Engine Control
Module, Secondary
Fuel Pump (Ignition)
J-Case Fuses Usage
57 Cooling Fan 1
58 Automatic Level
Control Compressor
59 Heavy Duty Antilock
Braking System
60 Cooling Fan 2
61 Antilock Brake
System 1
62 Starter
63 Stud 2 (Trailer
Brakes)
64 Left Bussed Electrical
Center 1

Black plate (41,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
Vehicle Care 10-41
J-CaseFuses Usage
65 Electric Running
Boards
66 Not Used
67 Transfer Case
68 Stud 1 (Trailer
Connector Battery
Power)
69 Mid-Bussed Electrical
Center 1
70 Climate Control
Blower
71 Power Liftgate
Module
72 Left Bussed Electrical
Center 2
Relays Usage
FAN HI Cooling Fan High
Speed
FAN LO Cooling Fan Low
Speed Relays Usage
FAN
CNTRL Cooling Fan Control
HDLP
LO/HID Low-Beam Headlamp
FOG
LAMP Front Fog Lamps
A/C
CMPRSR Air Conditioning
Compressor
STRTR Starter
PWR/TRN Powertrain
FUEL
PMP Fuel Pump
PRK
LAMP Parking Lamps
REAR
DEFOG Rear Defogger
RUN/
CRNK Switched PowerInstrument Panel Fuse
Block
The instrument panel fuse block
access door is located on the driver
side edge of the instrument panel.
Pull off the cover to access the fuse
block.

Black plate (42,1)Chevrolet Tahoe/Suburban Owner Manual - 2012
10-42 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
1 Rear Seats
2 Rear Accessory
Power Outlet Fuses Usage
3 Steering Wheel
Controls Backlight
4 Driver Door Module
5 Dome Lamps, Driver
Side Turn Signal Fuses Usage
6 Driver Side Turn
Signal, Stoplamp
7 Instrument Panel
Back Lighting
8 Passenger Side Turn
Signal, Stoplamp
9 Passenger Door
Module, Driver Unlock
10 Power Door Lock 2
(Unlock Feature)
11 Power Door Lock 2
(Lock Feature)
12 Stoplamps, Center
High‐Mounted
Stoplamp
13 Rear Climate Controls
14 Power Mirror
15 Body Control
Module (BCM)
16 Accessory Power
Outlets