2016 GMC ACADIA engine overheat

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
256 Vehicle Care
Warning (Continued)
until there is no sign of steam or
coolant before you open
the hood.
If you keep driving when the
vehicles engine is overheated,
the liquids in it can catch fire. You
or others could be badly burned.
Stop the engine if it overheats,
and get out of the vehicle until the
engine is cool.
SeeOverheated Engine
Protection Operating Mode 0256
for information on driving to a
safe place in an emergency.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be 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.
If the overheat warning is displayed
with no sign of steam: 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 slow
for about 10 minutes. Keep a safe
vehicle distance from the car in front
of you. 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 no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see
“Overheated
Engine Protection Operating Mode”
next in this section.
Overheated Engine
Protection
Operating Mode
This emergency operating mode lets
the vehicle be driven to a safe place
in an emergency situation. If an
overheated engine condition exists,
an overheat protection mode which
alternates firing groups of cylinders
helps prevent engine damage. In
this mode, there is a significant loss
in power and engine performance.
The temperature gauge indicates an
overheat condition exists. Driving
extended distances and/or towing a
trailer in the overheat protection
mode should be avoided.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
Vehicle Care 257
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 cause engine damage.
Allow the engine to cool before
attempting any repair. Repair the
cause of coolant loss, change the
oil, and reset the oil life system.
SeeEngine Oil 0246.
Power Steering Fluid
The power steering fluid reservoir is
under the engine cover on the
passenger side of the vehicle. See
Engine Compartment Overview
0245 for reservoir location.
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless
you suspect there is a leak in the
system or you hear an unusual
noise. A fluid loss in this system
could indicate a problem. Have the
system inspected and repaired.
How to Check Power Steering
Fluid
To check the power steering fluid:
1. Turn the key off and let the engine compartment
cool down.
2. Remove the engine cover. See Engine Cover 0246.
3. Wipe the cap and the top of the reservoir clean.
4. Unscrew the cap and wipe the dipstick with a clean rag.
5. Replace the cap and completely tighten it.
6. Remove the cap again and look at the fluid level on the
dipstick. The fluid level should be
somewhere between the MAX and
MIN line on the dipstick in room
temperature. If the fluid is on or
below the MIN line, add fluid close
to the MAX line.
What to Use
To determine what kind of fluid to
use, see
Recommended Fluids and
Lubricants 0330. Always use the
proper fluid.
Caution
Use of the incorrect fluid may
damage the vehicle and the
damages may not be covered by
the vehicle warranty. Always use
the correct fluid listed in
Recommended Fluids and
Lubricants 0330.
Washer Fluid
What to Use
When adding windshield washer
fluid, be sure to read the
manufacturer's instructions before

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
Index 363
Driving (cont'd)If the Vehicle is Stuck . . . . . . . . . 200
Loss of Control . . . . . . . . . . . . . . . 196
Off-Road Recovery . . . . . . . . . . . 196
Vehicle Load Limits . . . . . . . . . . . 200
Wet Roads . . . . . . . . . . . . . . . . . . . 197
Winter . . . . . . . . . . . . . . . . . . . . . . . . 198
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 185
E
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 240
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 266
Fuses and Circuit Breakers . . . 265
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 272
Overload . . . . . . . . . . . . . . . . . . . . . 265
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 351
Engine Air Cleaner/Filter . . . . . . . . . . . . . 250
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . .117
Compartment Overview . . . . . . . 245
Coolant . . . . . . . . . . . . . . . . . . . . . . . 252 Engine (cont'd)
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . .113
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 121
Cooling System . . . . . . . . . . . . . . . 251
Cooling System Messages . . . 132
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 246
Drive Belt Routing . . . . . . . . . . . . 335
Exhaust . . . . . . . . . . . . . . . . . . . . . . 210
Heater . . . . . . . . . . . . . . . . . . . . . . . . 207
Oil Life System . . . . . . . . . . . . . . . 249
Oil Messages . . . . . . . . . . . . . . . . . 133
Oil Pressure Light . . . . . . . . . . . . 121
Overheated Protection Operating Mode . . . . . . . . . . . . . 256
Overheating . . . . . . . . . . . . . . . . . . 255
Power Messages . . . . . . . . . . . . . 133
Running While Parked . . . . . . . . .211
Starting . . . . . . . . . . . . . . . . . . . . . . . 206
Entry Lighting . . . . . . . . . . . . . . . . . . . 154
Equipment, Towing . . . . . . . . . . . . . 238
Event Data Recorders . . . . . . . . . . 348
Extender, Safety Belt . . . . . . . . . . . . 65
Exterior Lamp Controls . . . . . . . . . 150
F
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 250
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 151
Flashers, Hazard Warning . . . . . . 152
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 294 Changing . . . . . . . . . . . . . . . . . . . . . 295
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 318
Fluid
Automatic Transmission . . . . . . 249
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 259
Power Steering . . . . . . . . . . . . . . . 257
Washer . . . . . . . . . . . . . . . . . . . . . . . 257
Fog Lamps Bulb Replacement . . . . . . . . . . . . 152
Folding Mirrors . . . . . . . . . . . . . . . . . . 41
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 224
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 346
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 49
Heated and Cooled . . . . . . . . . . . . . 53
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
366 Index
Memory Seats . . . . . . . . . . . . . . . . . . . 52
MessagesAirbag System . . . . . . . . . . . . . . . . 137
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 131
Brake System . . . . . . . . . . . . . . . . 131
Door Ajar . . . . . . . . . . . . . . . . . . . . . 132
Engine Cooling System . . . . . . . 132
Engine Oil . . . . . . . . . . . . . . . . . . . . 133
Engine Power . . . . . . . . . . . . . . . . 133
Fuel System . . . . . . . . . . . . . . . . . . 134
Key and Lock . . . . . . . . . . . . . . . . . 134
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 134
Object Detection System . . . . . 135
Ride Control System . . . . . . . . . . 136
Security . . . . . . . . . . . . . . . . . . . . . . 137
Service Vehicle . . . . . . . . . . . . . . . 137
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Transmission . . . . . . . . . . . . . . . . . 138
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 131
Vehicle Reminder . . . . . . . . . . . . . 139
Vehicle Speed . . . . . . . . . . . . . . . . 139
Washer Fluid . . . . . . . . . . . . . . . . . 139
Mirrors Automatic Dimming . . . . . . . . . . . . . 42
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . . . 43
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 40 Mirrors (cont'd)
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 41
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 42
Manual Rearview . . . . . . . . . . . . . . . 42
Park Tilt . . . . . . . . . . . . . . . . . . . . . . . . 42
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Mirrors, Interior Rearview . . . . . . . . 42
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 283
MP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Multi-band Antenna . . . . . . . . . . . . . 166
N
Navigation OnStar®. . . . . . . . . . . . . . . . . . . . . . 351
Net, Convenience . . . . . . . . . . . . . . 101
New Vehicle Break-In . . . . . . . . . . . 204
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . . 135
Odometer . . . . . . . . . . . . . . . . . . . . . . . 112
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 196
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 246
Engine Oil Life System . . . . . . . 249
Messages . . . . . . . . . . . . . . . . . . . . 133
Pressure Light . . . . . . . . . . . . . . . . 121 Older Children, Restraints . . . . . . . 79
Online Owner Center . . . . . . . . . . . 339
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 348
OnStar System . . . . . . . . . . . . . . . . . 170
OnStar
®Additional
Information . . . . . . . . . . . . . . . . . . . . 354
OnStar
®Connections . . . . . . . . . . . 352
OnStar®Diagnostics . . . . . . . . . . . . 354
OnStar®Emergency . . . . . . . . . . . . 351
OnStar®Navigation . . . . . . . . . . . . . 351
OnStar®Overview . . . . . . . . . . . . . . 350
OnStar®Security . . . . . . . . . . . . . . . 351
Operating Mode Overheated EngineProtection . . . . . . . . . . . . . . . . . . . 256
Operation
Infotainment System . . . . . . . . . . 159
Ordering Service Publications . . . . . . . . . . 345
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 108
Overheated Engine Protection Operating Mode . . . . 256
Overheating, Engine . . . . . . . . . . . . 255
Overview . . . . . . . . . . . . . . . . . . . . . . . 159