2022 GMC SIERRA heater

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
226 Driving and Operating
conditions at or below−18 °C (0 °F). Vehicles
with an engine heater should be plugged in
at least four hours before starting. An
internal thermostat in the plug-end of the
cord may exist, which will prevent engine
heater operation at temperatures above
−18 °C (0 °F).
{Warning
Do not plug in the engine block heater
while the vehicle is parked in a garage or
under a carport. Property damage or
personal injury may result. Always park
the vehicle in a clear open area away
from buildings or structures.
To Use the Engine Heater
1. Turn off the engine.
2. Check the heater cord for damage. If it is damaged, do not use it. See your dealer
for a replacement. Inspect the cord for
damage yearly.
3. Plug the heater cord into the connector on the vehicle.
4. Plug the cord into a grounded 110-volt AC outlet that is protected by a ground
fault detection function.
{Warning
Improper use of the heater cord or an
extension cord can damage the cord and
may result in overheating and fire.
.Plug the cord into a three-prong
electrical utility receptacle that is
protected by a ground fault detection
function. An ungrounded outlet could
cause an electric shock.
.Use a weatherproof, heavy-duty,
15 amp-rated extension cord if needed.
Failure to use the recommended
extension cord in good operating
condition, or using a damaged heater
(Continued)
Warning (Continued)
or extension cord, could make it
overheat and cause a fire, property
damage, electric shock, and injury.
.Do not operate the vehicle with the
heater cord permanently attached to
the vehicle. Possible heater cord and
thermostat damage could occur.
.While in use, do not let the heater
cord touch vehicle parts or sharp
edges. Never close the hood on the
heater cord.
.Before starting the vehicle, unplug the
cord, reattach the cover to the plug,
and securely fasten the cord. Keep the
cord away from any moving parts.
5. Before starting the engine, be sure to unplug and store the cord.
The length of time the heater should remain
plugged in depends on several factors. Ask a
dealer in the area where you will be parking
the vehicle for the best advice on this.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Vehicle Care 353
2.7L L4 Engine (L3B)
5.3L V8 Engine (L84) Shown, 6.2L V8 Engine(L87) Similar
1. Engine Electric Cooling Fans (Outof View)
2. Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can start up
even when the engine is not running and
can cause injury. Keep hands, clothing,
and tools away from any underhood
electric fan.
{Warning
Do not touch heater, radiator, a/c pipes
or hoses, or other engine parts. They can
be very hot and can burn you. Do not
run the engine if there is a leak; all
coolant could leak out. That could cause
an engine fire and can burn you. Fix any
leak before driving the vehicle.
Engine Coolant
The cooling system in the vehicle is filled
with DEX-COOL engine coolant. This coolant
is designed to remain in the vehicle for
5 years or 240 000 km (150,000 mi),
whichever occurs first. The following explains the cooling system
and how to check and add coolant when it
is low. If there is a problem with engine
overheating, see
Engine Overheating 0356.
What to Use
{Warning
Plain water, or other liquids such as
alcohol, can boil before the proper
coolant mixture will. With plain water or
the wrong mixture, the engine could get
too hot but there would not be an
overheat warning. The engine could catch
fire and you or others could be burned.
Use a 50/50 mixture of clean, drinkable
water and DEX-COOL coolant. This mixture:
.Gives freezing protection down to −37 °C
(−34 °F), outside temperature.
.Gives boiling protection up to 129 °C
(265 °F), engine temperature.
.Protects against rust and corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine
temperature.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Vehicle Care 357
If No Steam is Coming from the Engine
Compartment
The ENGINE OVERHEATED STOP ENGINE or
the ENGINE OVERHEATED IDLE ENGINE
message, along with a low coolant
condition, can indicate a serious problem.
The 2.7L L4 engine will shut down
automatically if the ENGINE OVERHEATED
STOP ENGINE message displays.
If there is an engine overheat warning, but
no steam is seen or heard, the problem may
not be too serious. Sometimes the engine
can get a little too hot when the vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer; seeTrailer Towing0313.
If the ENGINE OVERHEATED STOP ENGINE or
the ENGINE OVERHEATED IDLE ENGINE
message appears with no sign of steam, try
this for a minute or so: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest fan
speed. Open the windows as necessary. 3. When it is safe to do so, pull off the
road, shift to P (Park) or N (Neutral) and
let the engine idle.
If the temperature overheat gauge is no
longer in the overheat zone or an overheat
warning no longer displays, the vehicle can
be driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a safe
vehicle distance from the vehicle in front.
If the warning does not come back on,
continue to drive normally and have the
cooling system checked for proper fill and
function.
If the warning continues, pull over, stop, and
park the vehicle right away.
If there is still no sign of steam and the
vehicle is equipped with an engine driven
cooling fan, push down the accelerator until
the engine speed is about twice as fast as
normal idle speed for at least five minutes
while the vehicle is parked. If the warning is
still there, turn off the engine and get
everyone out of the vehicle until it
cools down.
If there is no sign of steam, idle the engine
for five minutes while parked. If the warning
is still displayed, turn off the engine until it
cools down.
Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and
the ENGINE POWER IS REDUCED message
displays, an overheat protection mode which
alternates firing groups of cylinders helps to
prevent engine damage. In this mode, a loss
in power and engine performance will be
noticed. This operating mode allows the
vehicle to be driven to a safe place in an
emergency. Driving extended distances and/
or towing a trailer in the overheat
protection mode should be avoided.
If the engine or transmission detects an
impending hot fluid condition, then the
transmission may force upshifts to limit
temperatures. Downshifts may also be
prevented in this instance. Normal operation
may continue unless the display indicates
there is a hot condition and engine should
be idled.
Caution
After driving in the overheated engine
protection operating mode, the engine oil
will be severely degraded. Any repairs
performed before the engine is cool may
(Continued)

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Vehicle Care 371
FusesUsage
1 –
2 – Fuses
Usage
3 Headlamp Left
4 Headlamp Right Fuses
Usage
6 Exterior Lighting Module 7
7 Exterior Lighting Module 4
8 –
9 Exterior Lighting Module 5
10 Exterior Lighting Module 6
11 Body Control Module 2
12 Rear Defog
13 Washer Front
14 –
15 –
16 –
17 IECL 1
19 DC/AC Inverter
20 IECR 2 21 –
22 IECL 2
24 Fuel Heater

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Vehicle Care 373
FusesUsage
76 Electric Running Board
78 Engine Control Module
79 Cabin Coll Pump
80 Powertrain Sensor 1 81 Trailer Stop/Turn Lamp Right
82 Trailer Interface Module 1
83 FTZM –Fuel Tank Zone
Module
84 Trailer Battery 85 –
86 Engine Control Module 87 Injector B Even
88 O2 B Sensor
89 O2 A sensor
90 Injector A Odd 91 –
92 Aeroshutter Relays
Usage
5 Rear Defog
18 DC/AC Inverter
23 Fuel Heater
35 Park Lamp/Front Grille Lamp
36 Run/Crank
43 Secondary Axle Motor
59 A/C Clutch
64 Starter Motor 70 Starter Motor 77 PowertrainInstrument Panel Fuse Block (Left)
The left instrument panel fuse block access
door is on the driver side edge of the
instrument panel.
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
Pull off the cover to access the fuse block.
A fuse puller is available in the left
instrument panel end cap.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-15883563) - 2022 - CRC - 11/19/21
464 Index
Door (cont'd)Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 441
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Driver Assistance Systems . . . . . . . . . . . . . . . 282
Driver Information Center (DIC) . . . . . . 128, 130
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . 249
Driver Mode Control Light . . . . . . . . . . . . . . . . 125
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 293
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 205
Characteristics and Towing Tips . . . . . . . . 309
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Hill and Mountain Roads . . . . . . . . . . . . . . 213
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 214
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 208
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 208
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 215
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . 245
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 245
Electric Parking Brake Light . . . . . . . . . . . . . . . 121
Electrical Equipment, Add-On . . . . . . . . . . . . 338
Electrical System
Engine Compartment Fuse Block . . . . . . . 370
Fuses and Circuit Breakers . . . . . . . . . . . . . 370
Instrument Panel Fuse Block . . . . . . . 373, 375
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 351
Check Light (Malfunction Indicator) . . . . . 119
Compartment Overview . . . . . . . . . . . . . . . . 345
Coolant Temperature Gauge . . . . . . . . . . . . 115
Coolant Temperature Warning Light . . . 125
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 352
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 441
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 350
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 114
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 126
Overheated ProtectionOperating Mode . . . . . . . . . . . . . . . . . . . . . 357 Engine (cont'd)
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 136
Running While Parked . . . . . . . . . . . . . . . . . 231
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Engine Air Filter Life System . . . . . . . . . . . . . . 351
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . . 317
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 452
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 230
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .61
Exterior Cargo Lamps . . . . . . . . . . . . . . . . . . . . . 151
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . .145
Exterior Lamps Off Reminder . . . . . . . . . . . . .147
Exterior Lighting Battery Saver . . . . . . . . . . .154
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 351
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147
Flashers, Hazard Warning . . . . . . . . . . . . . . . . 148
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
Floor Console Storage . . . . . . . . . . . . . . . . . . . . . 98
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-15883563) - 2022 - CRC - 11/19/21
466 Index
Heated (cont'd)Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . 102
Heated and Ventilated Front Seats . . . . . . . .52
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196, 198
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . . 127
Hill and Mountain Roads . . . . . . . . . . . . . . . . . 213
Hill Descent Control (HDC) . . . . . . . . . . . . . . . 249
Hill Descent Control Light . . . . . . . . . . . . . . . . . 122
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 247
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
How to Wear Seat Belts Properly . . . . . . . . . 56
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196, 198
I
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 222
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . 123
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . 123
Infants and Young Children, Restraints . . . . .73
Information Publication Ordering . . . . . . . . . . . . . . . . . . . 449
Infotainment System . . . . . . . . . . . . . . . . . . . . 452
Instrument Cluster . . . . . . . . . . . . . . . . . . . 109, 110 Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . .37
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 155
J
Jump Starting - North America . . . . . . . . . . . 407
K
Keyless Entry
Remote (RKE) System . . . . . . . . . . . . . . . . . . . 14
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . 379
Lamps Auxiliary Roof Mounted Lamp . . . . . . . . . 150
Daytime Running (DRL) . . . . . . . . . . . . . . . . 147
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Exterior Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Exterior Controls . . . . . . . . . . . . . . . . . . . . . . . 145
Exterior Lamps Off Reminder . . . . . . . . . . 147
Exterior Lighting Battery Saver . . . . . . . . 154
License Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Malfunction Indicator (CheckEngine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
On Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Lane Change Alert (LCA) . . . . . . . . . . . . . . . . . 299
Lane Departure Warning (LDW) . . . . . . . . . . 301 Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . . . 302
Lane Keep Assist Light . . . . . . . . . . . . . . . . . . . . 123
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . 58
LATCH System
Replacing Parts after a Crash . . . . . . . . . . . 89
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Illumination Control . . . . . . . . . . . . . . . . . . . 152
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Lights Airbag Readiness . . . . . . . . . . . . . . . . . . . . . . . 118
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Brake System Warning . . . . . . . . . . . . . . . . . 121
Charging System . . . . . . . . . . . . . . . . . . . . . . . 119
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 128
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Driver Mode Control . . . . . . . . . . . . . . . . . . . 125
Electric Parking Brake . . . . . . . . . . . . . . . . . . . 121
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125