2005 BUICK RANDEZVOUS coolant temperature

Overheated Engine Protection
Operating Mode
This emergency operating mode allows your vehicle to
be driven to a safe place in an emergency situation.
If an overheated engine condition exists, an overheat
protection mode which alternates ring groups of
cylinders helps prevent engine damage. In this mode,
you will notice a signicant loss in power and engine
performance. If your vehicle is equipped with the
3.6L V6 engine, the reduced engine power message
along with the engine coolant temperature warning
message will come on to indicate the vehicle has
entered overheated engine protection operating mode.
The temperature gage will also indicate an overheat
condition exists. Driving extended miles (km) and/or
towing a trailer in the overheat protection mode should
be avoided.
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. SeeEngine Oil on
page 5-16.
Cooling System
When you decide it is safe to lift the hood, here is what
you will see:
3400 V6 engine
5-30

(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. See Engine
Coolant on page 5-25for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(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.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 5-16for 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.
6-8

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

Engine (cont.)
Overheating................................................5-28
Reduced Power Message.............................3-53
Starting......................................................2-21
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................7-10
Exit Delay, Headlamp......................................3-17
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-42
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-21
Finish Damage.............................................5-101
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-72
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................................5-88
Fluid
Automatic Transaxle.....................................5-22
Power Steering...........................................5-36
Windshield Washer......................................5-37
Fog Lamps....................................................3-15
Four-Way Manual Driver Seat............................ 1-3Front Armrest Storage Area..............................2-40
Front Console Storage Area.............................2-39
Front Reading Lamps......................................3-19
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-50
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Low Warning Message.................................3-58
Fuses
Floor Console Fuse Block...........................5-105
Fuses and Circuit Breakers.........................5-105
Underhood Fuse Block...............................5-107
Windshield Wiper.......................................5-104
G
Gage
Engine Coolant Temperature.........................3-46
Fuel..........................................................3-50
Speedometer..............................................3-39
Tachometer.................................................3-40
6

Lockout Protection..........................................2-11
Locks
Delayed Locking........................................... 2-9
Door........................................................... 2-8
Lockout Protection.......................................2-11
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-10
Loss of Control...............................................4-15
Low Brake Fluid Warning Message....................3-59
Low Engine Oil Level Message.........................3-55
Low Fuel Warning Message.............................3-58
Low Oil Pressure Message...............................3-54
Low Tire Message..........................................3-56
Low Washer Fluid Warning Message.................3-58
Lumbar
Manual Controls............................................ 1-5
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-8
At Least Once a Month.................................. 6-9
At Least Once a Year.................................... 6-9Maintenance Schedule (cont.)
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-14
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-13
Owner Checks and Services........................... 6-8
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-46
Manual Lumbar Controls.................................... 1-5
Manual Passenger Seat.................................... 1-3
Memory Seat.................................................2-47
Message
All-Wheel Drive Disable Warning....................3-57
Center.......................................................3-51
Change Engine Oil......................................3-55
Charging System Indicator............................3-53
Door Ajar Warning.......................................3-56
Engine Coolant Temperature Warning.............3-52
Highbeam Out Warning................................3-61
Low Brake Fluid Warning..............................3-59
Low Engine Oil Level...................................3-55
Low Fuel Warning.......................................3-58
9