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GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Vehicle Care 3191. Remote Negative ( – ) Location.
See Jump Starting - North
America 0 395 .
2. Positive (+) Terminal (Under
Cover). See Jump Starting -
North America 0 395 .
3. Battery - North America 0 337 .
4. Engine Compartment Fuse
Block 0 350 .
5. Engine Cooling Fans (Out of
View). See Cooling System
0 327 .
6. Engine Oil Dipstick. See
“ Checking Engine Oil ” under
Engine Oil 0 321 .
7. Engine Oil Fill Cap. See “ When
to Add Engine Oil ” under
Engine Oil 0 321 .
8. Coolant Surge Tank and
Pressure Cap. See Cooling
System 0 327 .
9. Engine Air Cleaner/Filter 0 326 .
10. Brake Fluid Reservoir. See
Brake Fluid 0 336 . 11. Windshield Washer Fluid
Reservoir. See “ Adding Washer
Fluid ” under Washer Fluid
0 334 .
Page 322 of 472

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Vehicle Care 3211. Remote Negative ( – ) Location.
See Jump Starting - North
America 0 395 .
2. Positive (+) Terminal (Under
Cover). See Jump Starting -
North America 0 395 .
3. Battery - North America 0 337 .
4. Engine Compartment Fuse
Block 0 350 .
5. Engine Oil Dipstick. See
“ Checking Engine Oil ” under
Engine Oil 0 321 .
6. Engine Cooling Fans (Out of
View). See Cooling System
0 327 .
7. Engine Oil Fill Cap. See “ When
to Add Engine Oil ” under
Engine Oil 0 321 .
8. Coolant Surge Tank and
Pressure Cap. See Cooling
System 0 327 .
9. Engine Air Cleaner/Filter 0 326 .
10. Brake Fluid Reservoir. See
Brake Fluid 0 336 . 11. Windshield Washer Fluid
Reservoir. See “ Adding Washer
Fluid ” under Washer Fluid
0 334 .
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
Engine Oil For diesel engine vehicles, see
“ Engine Oil ” in the Duramax diesel
supplement.
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“ Selecting the Right Engine Oil ”
in this section.
.
Check the engine oil level
regularly and maintain the
proper oil level. See “ Checking
Engine Oil ” and “ When to Add
Engine Oil ” in this section. .
Change the engine oil at the
appropriate time. See Engine Oil
Life System 0 323 .
.
Always dispose of engine oil
properly. See “ What to Do with
Used Oil ” in this section.
Checking Engine Oil Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0 316 for the location.
{ WarningThe engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center
(DIC) message displays, check the
oil level.
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GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Vehicle Care 349To replace one of these bulbs:
1. Remove the two screws and lift
off the lamp assembly.
2. Turn the bulb socket
counterclockwise and pull it
straight out.
3. Pull the bulb straight out from
the socket.
License Plate Lamp To replace the bulb:
1. Reach behind the rear bumper
and locate the bulb. 2. Turn the bulb socket
counterclockwise and pull the
bulb straight out of the socket.
3. Replace the bulb and reverse
Step 2 to reinstall.Electrical System Electrical System
Overload The vehicle has fuses to protect
against an electrical system
overload. Fuses also 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, there
are some spare fuses and a fuse
puller in the left instrument panel
fuse block. The same amperage
fuse can also 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.
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GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
350 Vehicle Care 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.
Fuses and Circuit
Breakers The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems. { DangerFuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit
breakers. Use of an oversized
fuse or circuit breaker can result
in a vehicle fire. You and others
could be seriously injured or
killed.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible. Engine Compartment
Fuse Block If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
The engine compartment fuse block
is in the engine compartment, on
the passenger side of the vehicle.
Lift the cover to access the fuse
block.
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GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Vehicle Care 351CautionSpilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
A fuse puller is available in the left
instrument panel end cap.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
Fuses Usage
1 High-beam left Fuses Usage
2 High-beam right
3 Headlamp left
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GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
352 Vehicle Care Fuses Usage
4 Headlamp right
6 TIM
7 –
8 Fog lamp
9 VKM
10 –
11 Police upfitter
12 –
13 Washer front
14 Washer rear
15 MSB driver
16 –
17 IECL 1
19 DC/AC inverter
20 IECR 2
21 MSB pass
22 IECL 2
24 Eboost 1
25 REC
26 – Fuses Usage
27 Horn
28 –
29 –
30 –
31 –
32 Rear window
defogger
33 Heated mirror
34 Parking lamp left
37 Euro trailer
38 TIM
39 –
40 Misc ignition
41 Trailer
parking lamp
42 Park lamp right
44 –
45 Second fuel pump
46 Engine control
module ignition Fuses Usage
47 Transmission
control module
ignition
48 –
49 Transmission
control module
50 A/C clutch
51 Transfer case
control module
52 Front wiper
53 Center
high-mounted
stop lamp
54 Trailer
reverse lamp
55 Trailer
back-up lamp
56 SADS
57 TTPM
58 Starter motor
60 Active fuel
management 1
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GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Vehicle Care 353Fuses Usage
61 VES
62 Integrated chassis
control
module/CVS
63 Trailer battery
65 Auxiliary
underhood
electrical center
66 Cooling fan
motor left
67 Active fuel
management 2
68 –
69 Starter pinion
71 Cooling fan
72 Cooling fan right
73 Trailer stop/turn
lamp left
74 TIM
75 DEFC
76 Electric RNG BDS Fuses Usage
78 Engine control
module
79 Auxiliary battery
80 Cabin
cooling pump
81 Trailer stop/turn
lamp right
82 TIM
83 FTZM
84 Trailer brake
85 ENG
86 Engine control
module
87 Injector B even
88 O2 B sensor
89 O2 A sensor
90 Injector A odd
91 Engine control
module throttle
control
92 Cool fan clutch Relays Usage
5 Headlamp
18 DC/AC inverter
23 Rear window
defogger
35 Parking lamp
36 Run/Crank
43 Second fuel pump
59 A/C clutch
64 Starter motor
70 Starter pinion
77 Powertrain
Page 355 of 472
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
354 Vehicle Care
Instrument Panel Fuse
Block (Right)
The right instrument panel fuse
block access door is on the
passenger side edge of the
instrument panel.
Pull off the cover to access the front
of the fuse block.
To access the back of the fuse
block: 1. Push the tab at the top of fuse
block down.
2. Pull the top of the fuse block
outward.
3. Reverse Steps 1 – 2 to reinstall.