2008 CHEVROLET AVALANCHE heater

How to Add Coolant to the Coolant
Surge Tank
If you have not found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level is not at or above the FULL COLD
mark, add a 50/50 mixture of clean, drinkable water
and DEX-COOL
®coolant at the coolant surge tank,
but be sure the cooling system, including the coolant
surge tank pressure cap, is cool before you do it.
SeeEngine Coolant on page 5-25for more information.
If no coolant is visible in the surge tank, add coolant
as follows:
{CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge tank pressure cap — even a little — they
can come out at high speed. Never turn the
cap when the cooling system, including the
coolant surge tank pressure cap, is hot. Wait
for the cooling system and coolant surge tank
pressure cap to cool if you ever have to turn
the pressure cap.
{CAUTION:
Adding only plain water to the cooling system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the
proper coolant mixture will. The vehicle’s
coolant warning system is set for the proper
coolant mixture. With plain water or the wrong
mixture, the engine could get too hot but you
would not get the overheat warning. The engine
could catch re and you or others could be
burned. Use a 50/50 mixture of clean, drinkable
water and DEX-COOL
®coolant.
Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
5-33

D
Daytime Running Lamps..................................3-16
Defensive Driving............................................. 4-2
Delayed Locking.............................................2-10
Diesel
Running Out of Fuel....................................2-48
Disc, MP3............................................3-96, 3-101
Doing Your Own Service Work........................... 5-4
Dome Lamp Override......................................3-18
Dome Lamps .................................................3-18
Door
Delayed Locking..........................................2-10
Locks........................................................2-10
Power Door Locks.......................................2-10
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-11
Driver Information Center (DIC).........................3-50
DIC Operation and Displays..................3-51, 3-56
DIC Vehicle Customization............................3-66
DIC Warnings and Messages........................3-59
Driving
At Night.....................................................4-27
Before a Long Trip......................................4-29
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Highway Hypnosis.......................................4-29
Hill and Mountain Roads..............................4-30
In Rain and on Wet Roads...........................4-28
Off-Road ....................................................4-12Driving (cont.)
Recovery Hooks..........................................4-35
Rocking Your Vehicle to Get it Out.................4-34
Winter........................................................4-31
Dual Automatic Climate Control System.............3-24
DVD
Rear Seat Entertainment System..................3-107
E
EDR .............................................................7-16
Electrical System
Add-On Equipment.....................................5-108
Center Instrument Panel Fuse Block.............5-110
Fuses and Circuit Breakers.........................5-108
Instrument Panel Fuse Block.......................5-109
Power Windows and Other Power Options....5-108
Underhood Fuse Block...............................5-111
Windshield Wiper Fuses.............................5-108
Electronic Immobilizer
PASS-Key
®III+...........................................2-28
Electronic Immobilizer Operation
PASS-Key
®III+...........................................2-28
Engine
Air Cleaner/Filter.........................................5-20
Check and Service Engine Soon Light............3-43
Coolant......................................................5-25
Coolant Heater............................................2-34
Coolant Temperature Gage...........................3-42
4

G
Gage
Engine Coolant Temperature.........................3-42
Fuel..........................................................3-49
Oil Pressure...............................................3-46
Speedometer..............................................3-34
Tachometer.................................................3-34
Voltmeter Gage...........................................3-39
Garage Door Opener.......................................2-64
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-71
GM Mobility Reimbursement Program.................. 7-6
H
Hazard Warning Flashers................................... 3-6
Head Restraints..............................................1-11
Headlamp
Aiming .......................................................5-50
Headlamps
Bulb Replacement.......................................5-53
Daytime Running Lamps...............................3-16
Exterior Lamps............................................3-14
Flash-to-Pass............................................... 3-9Headlamps (cont.)
Halogen Bulbs............................................5-53
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-15
Heated Seats................................................... 1-5
Heater...........................................................3-21
Engine Coolant...........................................2-34
Heater...........................................................3-24
Highbeam On Light.........................................3-48
Highway Hypnosis...........................................4-29
Hill and Mountain Roads..................................4-30
Hood
Checking Things Under................................5-12
Release.....................................................5-12
Horn ............................................................... 3-6
How to Wear Safety Belts Properly...................1-19I
Ignition Positions.............................................2-30
Infants and Young Children, Restraints...............1-38
Ination - Tire Pressure...................................5-64
Instrument Panel
Brightness..................................................3-18
Cluster.......................................................3-33
Overview..................................................... 3-4
6