2005 BUICK RANDEZVOUS heater

If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they are not, your vehicle needs service.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty. See
Overheated Engine Protection Operating Mode on
page 5-30for information on driving to a safe place
in an emergency.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at or above the full cold mark, add a 50/50
mixture ofclean, drinkable waterand DEX-COOL
®
engine coolant at the coolant recovery tank. SeeEngine
Coolant on page 5-25for more information.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your 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.
5-32

Cleaning (cont.)
Tires........................................................5-100
Underbody Maintenance.............................5-101
Vinyl..........................................................5-97
Washing Your Vehicle...................................5-98
Weatherstrips..............................................5-98
Windshield, Backglass, and Wiper Blades.......5-99
Climate Control System...................................3-28
Dual..........................................................3-30
Dual Automatic............................................3-33
Outlet Adjustment........................................3-36
Comfort Guides, Rear Safety Belt.....................1-40
Compact Spare Tire........................................5-94
Content Theft-Deterrent....................................2-15
Control of a Vehicle.......................................... 4-6
Convenience Center, Rear...............................2-44
Convenience Net............................................2-43
Coolant
Engine Temperature Gage............................3-46
Engine Temperature Warning Message...........3-52
Heater, Engine............................................2-22
SGCM, Surge Tank Pressure Cap..................3-51
Cooling System..............................................5-30
Cruise Control Lever.......................................3-10
Cupholder(s)..................................................2-39
Customer Assistance Information
Courtesy Transportation.................................. 7-7Customer Assistance Information (cont.)
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors.......7-12
Reporting Safety Defects to the Canadian
Government............................................7-12
Reporting Safety Defects to the United States
Government............................................7-11
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-12
D
Daytime Running Lamps..................................3-14
Defensive Driving............................................. 4-3
Delayed Lighting.............................................3-18
Delayed Locking............................................... 2-9
Doing Your Own Service Work........................... 5-4
Door
Ajar Warning Message.................................3-56
Delayed Locking........................................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
4

Door (cont.)
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-10
Driver
Four-Way Manual Seat.................................. 1-3
Position, Safety Belt.....................................1-25
Driver Behavior................................................ 4-2
Driver Information Center (DIC).........................3-62
DIC Controls and Displays............................3-64
DIC Vehicle Personalization..........................3-66
Driving
At Night.....................................................4-17
City...........................................................4-21
Defensive..................................................... 4-3
Drunken....................................................... 4-3
Environment................................................. 4-2
Freeway.....................................................4-22
Hill and Mountain Roads..............................4-24
In Rain and on Wet Roads...........................4-18
Rocking Your Vehicle to Get it Out.................4-31
Winter........................................................4-26
Dual Automatic Climate Control System.............3-33
Dual Climate Control System............................3-30
DVD
Rear Seat Entertainment System..................3-115E
Electrical System
Add-On Equipment.....................................5-104
Floor Console Fuse Block...........................5-105
Fuses and Circuit Breakers.........................5-105
Headlamp Wiring.......................................5-104
Power Windows and Other Power Options.......5-104
Underhood Fuse Block...............................5-107
Windshield Wiper Fuses.............................5-104
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-41
Change Oil Message...................................3-55
Check and Service Engine Soon Light............3-46
Coolant......................................................5-25
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-46
Coolant Temperature Warning Message..........3-52
Engine Compartment Overview......................5-12
Exhaust.....................................................2-29
Low Oil Level Message................................3-55
Oil .............................................................5-16
Overheated Protection Operating Mode...........5-30
5

Garage Door Opener.......................................2-34
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-38
GM Mobility Reimbursement Program.................. 7-5
H
Hatch Ajar Warning Message............................3-56
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-7
Headlamp Wiring...........................................5-104
Headlamps
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-49
Daytime Running Lamps...............................3-14
Exit Delay..................................................3-17
Flash-to-Pass............................................... 3-8
Front Turn Signal, Sidemarker and
Parking Lamps.........................................5-51
Halogen Bulbs............................................5-49
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-49
High/Low Beam Changer................................ 3-8Head-Up Display (HUD)...................................3-21
Heated Seats................................................... 1-5
Heater...................................................3-28, 3-30
Heater...........................................................3-33
Highbeam On Light.........................................3-49
Highbeam Out Warning Message......................3-61
Highway Hypnosis...........................................4-24
Hill and Mountain Roads..................................4-24
HomeLink
®Transmitter....................................2-34
HomeLink®Transmitter, Programming................2-35
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-25
I
Ignition Positions.............................................2-20
Infants and Young Children, Restraints...............1-45
Ination -- Tire Pressure..................................5-61
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-38
7