2004 CHEVROLET TRAIL BLAZER radiator cap

3. Fill the radiator with the proper DEX-COOL®
coolant mixture, up to the base of the ller
neck. SeeEngine Coolant on page 5-23for more
information about the proper coolant mixture.4. Then ll the coolant recovery tank to the FULL
COLD mark.
5. Put the cap back on the coolant recovery tank, but
leave the radiator pressure cap off.
5-33

6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fan.
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 pressure cap is hand-tight.
Engine Fan Noise
This vehicle has a clutched engine cooling fan. When
the clutch is engaged, the fan spins faster to provide
more air to cool the engine. In most everyday driving
conditions the clutch is not engaged. This improves fuel
economy and reduces fan noise. Under heavy vehicle
loading, trailer towing, and/or high outside temperatures,
the fan speed increases when the clutch engages. So
you may hear an increase in fan noise. This is
normal and should not be mistaken as the transmission
slipping or making extra shifts. It is merely the cooling
system functioning properly. The fan will slow down
when additional cooling is not required and the clutch
disengages.
You may also hear this fan noise when you start the
engine. It will go away as the fan clutch disengages.
5-34

(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 blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(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 air bag
coverings, and have them repaired or replaced. (The air
bag system does not need regular maintenance.)
(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
rear compartment hinges, outer liftgate handle pivot
points, rear door detent link, roller mechanism, liftgate
handle pivot points, latch bolt, fuel door hinge, cargo
door hinge, locks and folding seat hardware.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)Add uid as needed. A uid loss could indicate
a problem; repair as needed. Check vent hose at
transfer case for kinks and proper installation.
(h)Change automatic transmission 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 5-23for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(j)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the uid level checked. Add uid if needed.
6-8

Power Steering...............................................4-10
Programmable Automatic Door Locks.................2-10
Programmable Locking Feature.........................2-10
Programmable Unlocking Feature......................2-11
Programming the HomeLink
®Transmitter...........2-39
Q
Questions and Answers About Safety Belts.........1-13
R
Radiator Pressure Cap....................................5-25
Radio Data System (RDS)...............3-62, 3-72, 3-86
Radio Messages.....................................3-67, 3-78
Radios..........................................................3-61
Care of Your Cassette Tape Player...............3-114
Care of Your CD and DVD Player................3-115
Care of Your CDs and DVDs.......................3-115
Navigation/Radio System..............................3-99
Radio Personalization.................................3-112
Radio with Cassette and CD.........................3-72
Radio with CD............................................3-62
Radio with Six-Disc CD................................3-86
Rear Seat Audio........................................3-111
Setting the Time..........................................3-61
Theft-Deterrent..........................................3-112
Understanding Reception............................3-114Rainsense™ Wipers........................................3-10
RDS Messages..............................3-66, 3-77, 3-91
Reading Lamps..............................................3-19
REAR ACCESS OPEN....................................3-59
Rear Axle......................................................5-46
Locking......................................................4-10
Rear Climate Control System............................3-28
Rear Compartment Storage Panel/Cover............2-45
Rear Door Security Locks................................2-12
Rear Floor Storage Lid....................................2-47
Rear Safety Belt Comfort Guides......................1-24
Rear Seat Audio (RSA)..................................3-111
Rear Seat Entertainment System.....................3-100
Rear Seat Operation......................................... 1-6
Rear Seat Passenger Positions.........................1-21
Rear Seat Passengers, Safety Belts..................1-21
Rear Seats (TrailBlazer EXT)............................. 1-7
Rear Storage Area..........................................2-45
Rear Underseat Fuse Block..............................5-99
Rear Window Defogger............................3-23, 3-27
Rearview Mirror, Automatic Dimming
with OnStar
®and Compass..........................2-34
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-44
Reduced Engine Power Light............................3-45
Remote Control.............................................3-105
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
11