2006 BUICK RANDEZVOUS radiator cap

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

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(41 500)50,000
(83 000)75,000
(125 000)100,000
(166 000)125,000
(207 500)150,000
(240 000)
Engine cooling system service (or
every ve years, whichever occurs rst).
An Emission Control Service.
See footnote (i).•
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (m).•
Maintenance Footnotes
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chang, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect other brake parts, including calipers,
parking brake, etc. Check parking brake adjustment.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts or
signs of wear. Inspect power steering lines and hoses
for proper hook-up, binding, leaks, cracks, chang, etc.(c)Visually inspect hoses and have them replaced if
they are cracked, swollen, or deteriorated. Inspect
all pipes, ttings and clamps; replace with genuine
GM parts as needed. To help ensure proper operation,
a pressure test of the cooling system and pressure
cap and cleaning the outside of the radiator and
air conditioning condenser is recommended at least
once a year.
(d)Visually inspect wiper blades for wear or cracking.
Replace wiper blades that appear worn or damaged
or that streak or miss areas of the windshield.
6-7

(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

PASS-Key®III Operation..................................2-18
PASS-Key®III Security Message.......................3-56
Perimeter Lighting...........................................3-19
Power
Accessory Outlet(s)......................................3-26
Door Locks.................................................. 2-9
Electrical System.......................................5-100
Reduced Engine Message............................3-53
Retained Accessory (RAP)............................2-20
Six-Way Seats.............................................. 1-4
Steering Fluid.............................................5-32
Windows....................................................2-14
Pretensioners, Safety Belt................................1-45
Program Mode Message..................................3-59
Programmable Automatic Door Locks.................2-10
Q
Questions and Answers About Safety Belts.........1-26
R
Radiator Pressure Cap....................................5-23
Radios..........................................................3-74
Care of Your Cassette Tape Player...............3-134
Care of Your CD and DVD Player................3-135
Care of Your CDs and DVDs.......................3-135
Navigation/Radio System, see Navigation
Manual.................................................3-114Radios (cont.)
Radio with Cassette and CD.........................3-87
Radio with CD............................................3-76
Radio with Six-Disc CD..............................3-100
Rear Seat Audio........................................3-129
Setting the Time..........................................3-75
Theft-Deterrent..........................................3-132
Understanding Reception............................3-133
Rear Door Security Locks................................2-10
Rear Hatch Ajar Warning Message....................3-55
Rear Outside Passenger Positions,
Safety Belts................................................1-36
Rear Reading Lamps......................................3-19
Rear Safety Belt Comfort Guides......................1-42
Rear Seat Audio (RSA)..................................3-129
Rear Seat Entertainment System.....................3-115
Rear Seat Operation......................................... 1-8
Rear Storage Area..........................................2-40
Rear Windshield Washer/Wiper.........................3-10
Rearview Mirrors.............................................2-31
Reclining Seatbacks.......................................... 1-6
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-36
Reduced Engine Power Message......................3-53
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Remote Keyless Entry Transmitter
Battery Low Warning Message......................3-59
Removing the Flat Tire and Installing
the Spare Tire.............................................5-77
10