engine coolant BUICK RANDEZVOUS 2006 Owner's Guide

2. Then keep turning the pressure cap, but now push
down as you turn it. Remove the pressure cap.
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
3. If your vehicle has the 3.5L V6 engine, after the
engine cools, open the coolant air bleed valves.
There are two bleed valves. One is located on the
thermostat housing. The other is located on the
thermostat bypass tube.4. Fill the radiator with the proper DEX-COOL
®
coolant mixture, up to the base of the ller
neck. SeeEngine Coolant on page 5-21for more
information about the proper coolant mixture.
If your vehicle has the 3.5L V6 engine and you
see a stream of coolant coming from an air bleed
valve, close the valve. Otherwise, close the
valves after the radiator is lled.
5. Rinse or wipe any spilled coolant from the engine
and the compartment. Housing
Bypass Tube
3.5L V6 Engine shown, 3.6L V6 Engine similar
5-30

6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fans.
7. By this time, the coolant level inside the radiator
ller neck may be lower. If the level is lower, add
more of the proper DEX-COOL
®coolant mixture
through the ller neck until the level reaches
the base of the ller neck.
8. Then replace the pressure cap. At any time during
this procedure if coolant begins to ow out of the
ller neck, reinstall the pressure cap. Be sure
the arrows on the pressure cap line up properly.9. Then ll the coolant recovery tank to the full
cold mark.
10. Put the cap back on the coolant recovery tank. 3.5L V6 Engine shown, 3.6L V6 Engine similar
3.5L V6 Engine shown, 3.6L V6 Engine similar
5-31

Windshield Washer Fluid
What Washer Fluid to Use
When you need windshield washer uid, be sure to
read the manufacturer’s instructions before use. If you
will be operating your vehicle in an area where the
temperature may fall below freezing, use a uid that
has sufficient protection against freezing.
Adding Washer Fluid
Open the cap with the
washer symbol on it.
Add washer uid until the
tank is full. SeeEngine
Compartment Overview
on page 5-10for reservoir
location.Notice:
When using concentrated washer uid,
follow the manufacturer’s instructions for
adding water.
Do not mix water with ready-to-use washer uid.
Water can cause the solution to freeze and
damage your washer uid tank and other parts
of the washer system. Also, water does not
clean as well as washer uid.
Fill your washer uid tank only three-quarters
full when it is very cold. This allows for
expansion if freezing occurs, which could
damage the tank if it is completely full.
Do not use engine coolant (antifreeze) in your
windshield washer. It can damage your washer
system and paint.
5-33

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-13. Reset oil life system.
SeeEngine Oil Life System on page 5-16.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (j).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 5-18.See footnote (l).•
Rotate tires and check ination pressures and wear. SeeTire Inspection and
Rotation on page 5-60and “Tire Wear Inspection” inAt Least Once a Month
on page 6-9.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid
as needed.••
Perform any needed additional services. See “Additional Required Services”
in this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transaxle uid level and add uid as needed.•
Inspect throttle system.See footnote (j).•
Replace passenger compartment air lter.See footnote (k).•
6-5

(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors, and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken airbag
coverings, and have them repaired or replaced.
The airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders, hood latch
assemblies, secondary latches, pivots, spring anchor
and release pawl, hood and door hinges, rear folding
seats, and liftgate hinges. More frequent lubrication may
be required when exposed to a corrosive environment.
Applying silicone grease on weatherstrips with a
clean cloth will make them last longer, seal better, and
not stick or squeak.
(g)Check system for interference or binding and for
damaged or missing parts. Replace parts as needed.
Replace any components that have high effort or
excessive wear. Do not lubricate accelerator or cruise
control cables.(h)Change automatic transaxle uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(i)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-21 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
(j)Check system for interference or binding and for
damaged or missing parts. Replace parts as needed.
Replace any components that have high effort or
excessive wear. Do not lubricate accelerator or cruise
control cables.
(k)If you drive regularly under dusty conditions, the lter
may require replacement more often.
(l)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
(m)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
6-8

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist
you with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-13for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 5-21for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the
windshield washer uid reservoir and add the
proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-51for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-70.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation
on page 5-60.
6-9

Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name, part
number, or specication may be obtained from
your dealer.
Usage Fluid/Lubricant
Engine OilEngine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certied for Gasoline Engines
starburst symbol. GM Goodwrench
®
oil meets all the requirements
for your vehicle. To determine
the proper viscosity for your
vehicle’s engine, seeEngine Oil
on page 5-13.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant
on page 5-21.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184,
in Canada 89021186).
Usage Fluid/Lubricant
Automatic
TransaxleDEXRON®-VI Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Carrier
Assembly —
Differential
(Rear Drive
Module)
and Transfer
Case (Power
Transfer Unit)VERSATRAK
®Fluid
(GM Part No. U.S. 12378514,
in Canada 88901045).
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring
Anchor, and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293,
in Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and
Door Hinges
and Rear
Folding SeatMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Weatherstrip
ConditioningDielectric Silicone Grease
(GM Part No. U.S. 12345579,
in Canada 992887).
6-12

Chains, Tire...................................................5-67
Change Engine Oil Message............................3-55
Charging System Indicator Message..................3-53
Check
Engine Light...............................................3-46
Tire Pressure System...................................5-59
Check Gas Cap Message................................3-56
Checking Things Under the Hood....................... 5-9
Chemical Paint Spotting...................................5-97
Child Restraints
Child Restraint Systems...............................1-51
Infants and Young Children...........................1-48
Lower Anchors and Tethers for Children..........1-55
Older Children.............................................1-45
Securing a Child Restraint in a
Rear Outside Seat Position........................1-65
Securing a Child Restraint in the
Center Rear Seat Position.........................1-67
Securing a Child Restraint in the
Right Front Seat Position..........................1-69
Where to Put the Restraint...........................1-54
Cigarette Lighter.............................................3-27
Cleaning
Aluminum or Chrome-Plated Wheels..............5-96
Exterior Lamps/Lenses.................................5-94
Fabric/Carpet..............................................5-92
Finish Care.................................................5-95
Inside of Your Vehicle..................................5-91
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-93Cleaning (cont.)
Leather......................................................5-93
Tires..........................................................5-96
Underbody Maintenance...............................5-97
Washing Your Vehicle...................................5-94
Weatherstrips..............................................5-94
Windshield, Backglass, and Wiper Blades.......5-95
Climate Control System...................................3-28
Dual..........................................................3-30
Dual Automatic............................................3-33
Outlet Adjustment........................................3-36
Collision Damage Repair..................................7-10
Comfort Guides, Rear Safety Belt.....................1-42
Compact Spare Tire........................................5-90
Content Theft-Deterrent....................................2-15
Control of a Vehicle.......................................... 4-7
Convenience Center, Rear...............................2-43
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..............................................5-26
Cruise Control................................................3-10
Cupholder(s)..................................................2-38
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
3

Electrical System (cont.)
Underhood Fuse Block...............................5-103
Windshield Wiper Fuses.............................5-100
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-37
Change Oil Message...................................3-55
Check and Service Engine Soon Light............3-46
Coolant......................................................5-21
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-46
Coolant Temperature Warning Message..........3-52
Engine Compartment Overview......................5-10
Exhaust.....................................................2-29
Oil .............................................................5-13
Oil Life System...........................................5-16
Overheated Protection Operating Mode...........5-25
Overheating................................................5-23
Reduced Power Message.............................3-53
Starting......................................................2-21
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................. 7-9
Exit Delay, Headlamp......................................3-17
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-45
Exterior Lamps...............................................3-14F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-97
Fixed Mast Antenna.......................................3-135
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-69
Flat Tire, Changing.........................................5-70
Flat Tire, Storing.............................................5-84
Fluid
Automatic Transaxle.....................................5-19
Power Steering...........................................5-32
Windshield Washer......................................5-33
Fog Lamps....................................................3-15
Front Armrest Storage Area..............................2-39
Front Console Storage Area.............................2-39
Front Reading Lamps......................................3-19
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-8
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-50
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Low Warning Message.................................3-57
5

Fuses
Floor Console Fuse Block...........................5-101
Fuses and Circuit Breakers.........................5-101
Underhood Fuse Block...............................5-103
Windshield Wiper.......................................5-100
G
Gage
Engine Coolant Temperature.........................3-46
Fuel..........................................................3-50
Speedometer..............................................3-39
Tachometer.................................................3-40
Garage Door Opener.......................................2-34
Gas, Check Cap Message...............................3-56
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-38
GM Mobility Reimbursement Program.................. 7-5
H
Hatch Ajar Warning Message............................3-55
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp Wiring...........................................5-100Headlamps
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-44
Daytime Running Lamps...............................3-14
Exit Delay..................................................3-17
Flash-to-Pass............................................... 3-8
Halogen Bulbs............................................5-44
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-45
High/Low Beam Changer................................ 3-8
Head-Up Display (HUD)...................................3-21
Heated Seats................................................... 1-5
Heater...................................................3-28, 3-30
Heater...........................................................3-33
Highbeam Out Warning Message......................3-60
Highway Hypnosis...........................................4-24
Hill and Mountain Roads..................................4-24
Hood
Checking Things Under.................................. 5-9
Release....................................................... 5-9
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-27
6