2003 BUICK RANDEZVOUS cooling

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
filler neck may be lower. If the level is lower, add
more of the proper DEX-COOL
®coolant mixture
through thefiller neck until the level reaches
the base of thefiller neck.8. Then replace the pressure cap. At any time during
this procedure if coolant begins toflow out of the
filler neck, reinstall the pressure cap. Be sure
the arrows on the pressure cap line up like this.
5-30
2003 - Rendezvous OM

No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the
minimum required by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not needed. However, if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer if any of these conditions exist.
Your dealer will know the kind of wheel you need.Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM
original equipment parts. This way, you will be sure to
have the right wheel, wheel bolts and wheel nuts
for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-59for more
information.
5-55
2003 - Rendezvous OM

Fuse Usage
8 Spare
9 ABS Solenoid Valves
10 Oxygen Sensors-Emissions Control
11 Injectors
12 Spare
13 Engine Controls
14 Daytime Running Lamps (DRL)
15 Passenger’s Low-Beam Headlamp
16 Spare
17 Driver’s Low-Beam Headlamp
18 Driver’s High-Beam Headlamp
19 Ignition Switch Battery Power
20 Parking Lamps-Front and Rear
21 Air Pump-Emissions Controls
22 Spare
23 Passenger’s High-Beam Headlamp
24 Spare
25 DVD
26 Front Fog Lamps
27Ignition Relay, Neutral Start Switch,
Powertrain Control Module (PCM)
28 Body Control Module-Battery Power
29 Remote Digital Radio Receiver
30 All-Wheel Drive (AWD) ModuleFuse Usage
31 Cruise Control
32 Front Power Outlets/Lights, OnStar
®
33Automatic Transaxle Shift Lock
Control System
34 Spare
35 Starter Solenoid Battery Fuse
36 ABS Motor
37 Spare
38 Spare
39 Engine Cooling Fan
40 Engine Cooling Fan
41Main Battery Fuse for Retained
Accessory Power Relay and
Accessory Relay
42Main Battery Fuse for Heated
Seats, Air
43 Spare
44 Spare
45Main Battery Fuse for Power
Outlets, Level Control, Power Seats
and Mirrors and Body Computer
46 Spare
47Main Battery Fuse for HVAC Blower
and Ignition 3 Relay
5-90
2003 - Rendezvous OM

Fuse Usage
48Main Battery Fuse for Ignition
Switch, Radio, Heads-Up Display,
Remote Keyless Entry (RKE),
Instrument Cluster, Air Conditioning
and Body Computer
64 Spare
65 Spare
66 Spare
67 Spare
68 Spare
69 Spare
70 Fuse Puller
§Diode for Air Conditioning
Compressor Clutch
Circuit Breaker Usage
49 Spare
Relay Usage
50 Horn
51 Fuel Pump
52 Air Conditioning Clutch
53 Daytime Running Lamps (DRL)
54 Low-Beam Headlamps
55 Parking Lamps
56 High-Beam Headlamps
57 Fog Lamps
58 Starter Relay
59 Cooling Fan
60 Ignition 1 Relay
61 Cooling Fan
62 Cooling Fan
63 Air Pump
5-91
2003 - Rendezvous OM

Capacities and Specifications
The following approximate capacities are given in English and metric conversions.
Please refer toPart D: Recommended Fluids and Lubricants on page 6-15for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant (R134a) 1.7 lbs. 0.8 kg
Automatic Transaxle
Pan Removal and Replacement
Complete Overhaul7.4 quarts
10.0 quarts7.0 L
9.5 L
AWD Automatic Transaxle
Pan Removal and Replacement
Complete Overhaul8.7 quarts
10.8 quarts8.3 L
10.3 L
Cooling System with A/C 9.6 quarts 9.1 L
Engine Oil with Filter 4.5 quarts 4.3 L
Fuel Capacity 18.0 gallons 68.1 L
Rear Differential Fluid Capacity 2.1 quarts 1.9 L
Transfer Case Fluid Capacity 0.6 pints 290 ml
Wheel Nut Torque 100 lb ft 140Y
5-92
2003 - Rendezvous OM

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Your Vehicle and the Environment....................6-2
Maintenance Requirements..............................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-5
Part B: Owner Checks and Services.................6-9
At Each Fuel Fill............................................6-9
At Least Once a Month...................................6-9
At Least Twice a Year....................................6-9At Least Once a Year...................................6-10
Part C: Periodic Maintenance Inspections.........6-13
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection............................6-13
Exhaust System Inspection............................6-13
Fuel System Inspection..................................6-13
Engine Cooling System Inspection...................6-13
Throttle System Inspection.............................6-14
All-Wheel Drive Inspection..............................6-14
Brake System Inspection................................6-14
Part D: Recommended Fluids and Lubricants......6-15
Part E: Maintenance Record...........................6-16
Section 6 Maintenance Schedule
6-1
2003 - Rendezvous OM

97,500 Miles (162 500 km)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-51for proper rotation pattern and additional
information.(See footnote @.) (See footnote +.)
100,000 Miles (166 000 km)
❑Inspect spark plug wires.An Emission Control
Service.
❑Replace spark plugs.An Emission Control Service.
❑Change automatic transaxleuid andlter 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.
❑If you haven’t used your vehicle under severe service
conditions listed previously and, therefore, haven’t
changed your automatic transaxleuid, change both
theuid andlter.150,000 Miles (240 000 km)
❑Drain,ush and rell cooling system (or every
60 months since last service, whichever occursrst).
SeeEngine Coolant on page 5-19for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.An Emission Control Service.
❑Inspect engine accessory drive belt.An Emission
Control Service.
6-8
2003 - Rendezvous OM

Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).You should let your dealer’s
service department or other qualified service center do
these jobs. Make sure any necessary repairs are
completed at once.
Proper procedures to perform these services may be
found in a service manual. SeeService Publications
Ordering Information on page 7-9.
Steering, Suspension and Front
Drive Axle Boot and Seal Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, chang, etc. Clean and then inspect the drive
axle boot seals for damage, tears or leakage. Replace
seals if necessary.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in theoor pan or could let
exhaust fumes into the vehicle. SeeEngine Exhaust
on page 2-29.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
6-13
2003 - Rendezvous OM