engine overheat CHEVROLET AVALANCHE 2011 2.G Owner's Manual

Black plate (24,1)Chevrolet Avalanche Owner Manual - 2011
10-24 Vehicle Care
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.
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. SeeTrailer
Towing on page 9‑79. 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. In heavy traffic, let the engine idle in N (Neutral) while stopped.
If 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.
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”
later in this section.
Overheated Engine
Protection
Operating Mode
If an overheated engine condition
exists and the ENGINE POWER IS
REDUCED message is displayed,
an overheat protection mode which
alternates firing groups of cylinders
helps 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.

Black plate (25,1)Chevrolet Avalanche Owner Manual - 2011
Vehicle Care 10-25
Notice:After driving in the
overheated engine protection
operating mode, to avoid engine
damage, allow the engine to cool
before attempting any repair.
The engine oil will be severely
degraded. Repair the cause of
coolant loss, change the oil and
reset the oil life system. See
Engine Oil on page 10‑8.
Engine Fan
The vehicle has electric cooling
fans. The fans spinning at low
speed during most everyday driving
might be heard. The fans can turn
off if no cooling is required. Under
heavy vehicle loading, trailer towing,
and/or high outside temperatures,
or if operating the air conditioning
system, the fans can change to high
speed and an increase in fan noise
might be heard. This is normal and
indicates that the cooling system is
functioning properly. The fans
change to low speed when
additional cooling is no longer
required.
Power Steering Fluid
See Engine Compartment Overview
on page 10‑6 for reservoir location.
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless
there is a leak suspected in the
system or an unusual noise is
heard. 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. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level on the dipstick.
The level should be at the FULL
COLD mark. If necessary, add only
enough fluid to bring the level up to
the mark.

Black plate (5,1)Chevrolet Avalanche Owner Manual - 2011
INDEX i-5
Cooling System Messages . . . 5-39
Drive Belt Routing . . . . . . . . . . . . 12-3
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-38
Fan . . . . . . . . . . . . . . . . . . . . . . . . . 10-25
Oil Pressure Gauge . . . . . . . . . . 5-14
Overheated ProtectionOperating Mode . . . . . . . . . . . 10-24
Overheating . . . . . . . . . . . . . . . . 10-22
Power Messages . . . . . . . . . . . . . 5-40
Pressure Light . . . . . . . . . . . . . . . . 5-26
Running While Parked . . . . . . . . 9-38
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-32
Engine Oil Life System . . . . . . . . . . . . . . . . . .10-11
Messages . . . . . . . . . . . . . . . . . . . . 5-40
Entry/Exit Lighting . . . . . . . . . . . . . . 6-7
Equipment, Towing . . . . . . . . . . . . 9-84
Event Data Recorders . . . . . . . . 13-17
Extender, Safety Belt . . . . . . . . . . 3-27
Exterior Cargo Lamps . . . . . . . . . . 6-6
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . 10-25
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Filter Engine Air Cleaner . . . . . . . . . 10-16
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-3
Flashers, Hazard Warning . . . . . . 6-5
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-73
Flat Tire, Changing . . . . . . . . . . . 10-75
Floor Mats . . . . . . . . . . . . . . . . . . .10-106
Fluid Automatic Transmission . . . . 10-12
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-28
Four-Wheel DriveTransfer Case . . . . . . . . . 9-44, 9-50
Power Steering . . . . . . . . . . . . . 10-25
Washer . . . . . . . . . . . . . . . . . . . . . 10-26
Fog Lamps
Bulb Replacement . . . . . . . . . . . . . 6-5
Folding Mirrors . . . . . . . . . . . . . . . . 2-21 Four-Wheel
Drive . . . . . . . . . . . . 10-30, 9-44, 9-50
Front Axle . . . . . . . . . . . . . . . . . . . . 10-31
Front Fog Lamps Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 3-3
Heated . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Heated and Ventilated . . . . . . . . 3-10
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68 Additives . . . . . . . . . . . . . . . . . . . . . 9-69
E85 (85% Ethanol) . . . . . . . . . . . 9-70
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 9-74
Filling the Tank . . . . . . . . . . . . . . . 9-72
Fuels in Foreign Countries . . . . 9-69
Gasoline Specifications . . . . . . . 9-69
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Low Fuel Warning Light . . . . . . . 5-26
Management, Active . . . . . . . . . . 9-37
Recommended . . . . . . . . . . . . . . . 9-68
Requirements, California . . . . . 9-69
System Messages . . . . . . . . . . . . 5-41

Black plate (9,1)Chevrolet Avalanche Owner Manual - 2011
INDEX i-9
N
Navigation SystemVehicle Data Recordingand Privacy . . . . . . . . . . . . . . . 13-18
New Vehicle Break-In . . . . . . . . . . 9-30
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . 5-41
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-12 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 9-7 Driving . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
Recovery . . . . . . . . . . . . . . . . . . . . . . 9-6
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Engine Oil Life System . . . . . .10-11
Engine Oil PressureGauge . . . . . . . . . . . . . . . . . . . . . . 5-14
Messages . . . . . . . . . . . . . . . . . . . . 5-40
Pressure Light . . . . . . . . . . . . . . . . 5-26
Older Children, Restraints . . . . . 3-46 Online Owner Center . . . . . . . . . . 13-6
OnStar
®System . . . . . . . . . . . . . . . 1-29
Operation, Infotainment System . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Overheated Engine
Protection
Operating Mode . . . . . . . . . . . . . 10-24
Overheating, Engine . . . . . . . . . . 10-22
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 9-35
Shifting Out of . . . . . . . . . . . . . . . . 9-36
Park Tilt Mirrors . . . . . . . . . . . . . . . . 2-22
Parking Assist, Ultrasonic . . . . . . . . . . . . . 9-60
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 9-53
Brake and P (Park)
Mechanism Check . . . . . . . . 10-34
Over Things That Burn . . . . . . . 9-37
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . 5-18 Passenger Sensing System . . . 3-38
Perchlorate Materials
Requirements, California . . . . . 10-3
Phone Bluetooth . . . . . . . . . . . . . . . . . . . . . 7-46
Power Door Locks . . . . . . . . . . . . . . . . . . . . 2-8
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Protection, Battery . . . . . . . . . . . . . 6-8
Retained Accessory (RAP) . . . 9-34
Seat Adjustment . . . . . . . . . . . . . . . 3-4
Steering Fluid . . . . . . . . . . . . . . . 10-25
Windows . . . . . . . . . . . . . . . . . . . . . 2-24
Power Assist Steps . . . . . . . . . . . . 2-16
Pregnancy, Using Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
Privacy Radio FrequencyIdentification (RFID) . . . . . . . 13-19
Program
Courtesy Transportation . . . . 13-10
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . 10-3