check engine CHEVROLET BLAZER 2004 2.G Repair Manual

At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specied in Part D.
Body Lubrication Service
Lubricate all hood hinges, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
door hinges, fuel door hinge, endgate hinges, outer
tailgate handle pivot points, tailgate hinges, tailgate
mounted spare tire (if equipped), glove box and console
doors, moving seat hardware and folding seat
hardware. Part D tells you what to use. More frequent
lubrication may be required when exposed to a corrosive
environment.
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-35if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. On automatic transmission vehicles, try to start the
engine in each gear. The starter should work only
in PARK (P) or NEUTRAL (N). If the starter works in
any other position, your vehicle needs service.
On manual transmission vehicles, put the shift lever
in NEUTRAL (N), push the clutch down halfway and
try to start the engine. The starter should work only
when the clutch is pushed down all the way to the
oor. If the starter works when the clutch is not
pushed all the way down, your vehicle needs service.
6-28

Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake, SeeParking Brake
on page 2-35if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but do not start the engine. Without
applying the regular brake, try to move the shift
lever out of PARK (P) with normal effort. If the shift
lever moves out of PARK (P), your vehicle needs
service.
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
With an automatic transmission, the key should turn
to LOCK only when the shift lever is in PARK (P).
With a manual transmission, the key should turn to
LOCK only when you press the key release button.
On all vehicles, the key should come out only in LOCK.
6-29

Parking Brake and Automatic
Transmission Park (P) Mechanism
Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability: With
the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure form
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-30

Throttle System Inspection
Inspect the throttle 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
and cruise control cables.
Transfer Case and Front Axle
(Four-Wheel Drive) Inspection
Every 12 months or at engine oil change intervals, check
front axle and transfer case and add lubricant when
necessary. A uid loss could indicate a problem; check
and have it repaired, if needed. Check vent hose at
transfer case for kinks and proper installation. More
frequent lubrication may be required on off-road use.
Brake System Inspection
Inspect the complete system. 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. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including
drums, wheel cylinders, calipers, parking brake, etc.
Check parking brake adjustment. You may need to have
your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-32

Center Rear Passenger Position, Safety Belts.....1-26
Center Seat Positions, Child Restraints..............1-51
Certication/Tire Label.....................................4-58
Chains, Tires..................................................5-74
Charging System Light....................................3-26
Check
Engine Light...............................................3-30
Gages Warning Light...................................3-35
Checking Brake Fluid......................................5-40
Checking Coolant............................................5-25
Checking Engine Oil........................................5-13
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-95
Child Restraints
Center Seat Positions..................................1-51
Child Restraint Systems...............................1-37
Infants and Young Children...........................1-34
Lower Anchorages and Top Tethers
for Children (LATCH System).....................1-44
Older Children.............................................1-31
Securing a Child Restraint Designed
for the LATCH System..............................1-46
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-46
Securing a Child Restraint in the
Right Front Seat Position..........................1-48
Top Strap...................................................1-41
Top Strap Anchor Location............................1-43
Where to Put the Restraint...........................1-40
Cigarette Lighter.............................................3-17Cleaning
Inside of Your Vehicle..................................5-90
Outside of Your Vehicle................................5-92
Underbody Maintenance...............................5-95
Weatherstrips..............................................5-92
Cleaning Aluminum Wheels..............................5-94
Cleaning Exterior Lamps/Lenses.......................5-93
Cleaning Fabric/Carpet....................................5-90
Cleaning Glass Surfaces..................................5-91
Cleaning Interior Plastic Components.................5-91
Cleaning Leather............................................5-91
Cleaning the Mirror.........................................2-43
Cleaning the Photocells...................................2-43
Cleaning the Top of the Instrument Panel...........5-91
Cleaning the Windshield, Backglass and
Wiper Blades..............................................5-94
Cleaning Tires................................................5-94
Cleaning Vinyl................................................5-90
Cleaning Wood Panels....................................5-91
Climate Control System...................................3-17
Outlet Adjustment........................................3-20
Clutch, Hydraulic.............................................5-23
Column Shift Lever.........................................2-36
Compact Spare Tire........................................5-88
Console Shift Lever.........................................2-37
Content Theft-Deterrent....................................2-16
Control of a Vehicle.......................................... 4-7
Convenience Net............................................2-59
Convenience System, Rear..............................2-60
3

Driving in Water..............................................4-29
Driving On Grades..........................................4-69
Driving on Off-Road Hills.................................4-19
Driving on Snow or Ice....................................4-41
Driving Through Deep Standing Water...............4-34
Driving Through Flowing Water.........................4-34
Driving Uphill..................................................4-21
Driving with a Trailer.......................................4-67
E
Electrical System
Add-On Equipment......................................5-98
Fuses and Circuit Breakers...........................5-99
Headlamps.................................................5-98
Power Windows and Other Power Options......5-98
Windshield Wiper Fuses...............................5-98
Electronic Transfer Case..................................2-29
Emergency Release for Opening Tailgate...........2-15
Emissions Inspection and Maintenance
Programs...................................................3-32
Engine
Air Cleaner/Filter.........................................5-17
Battery.......................................................5-42
Check and Service Engine Soon Light............3-30
Coolant......................................................5-24
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-29
Cooling System Inspection............................6-31Engine (cont.)
Drive Belt Routing.......................................6-36
Engine Compartment Overview......................5-12
Exhaust.....................................................2-40
Fan Noise..................................................5-36
Oil .............................................................5-13
Overheating................................................5-27
Starting......................................................2-20
Engine Compartment Fuse Block.....................5-101
Engine Coolant Level Check.............................6-26
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-26
Engine Specications...................................5-103
Engine Speed Control.....................................2-21
Entry Lighting.................................................3-15
Environmental Concerns..................................4-17
Erasing HomeLink
®Buttons..............................2-48
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-16
Express Down Window....................................2-12
Extender, Safety Belt.......................................1-30
Exterior Lamps...............................................3-12
F
Filter
Engine Air Cleaner......................................5-17
Finding a Program Type (PTY)
Station.......................................3-44, 3-53, 3-64
5

Finding a Station....................3-39, 3-42, 3-50, 3-61
Finish Care....................................................5-93
Finish Damage...............................................5-95
Five-Speed....................................................2-26
Fixed Mast Antenna........................................3-74
Flash-to-Pass Feature....................................... 3-7
Flat Tire........................................................5-75
Flat Tire, Changing.........................................5-76
Fluid
Automatic Transmission................................5-19
Manual Transmission....................................5-22
Power Steering...........................................5-36
Windshield Washer......................................5-38
FM ...............................................................3-72
Fog Lamps....................................................3-15
Following Distance..........................................4-67
Footnotes................................................6-7, 6-18
Four Door Models...........................1-26, 1-28, 1-51
Four-Wheel Drive....................................2-28, 5-48
Front Axle......................................................5-49
Front Map Lamps...........................................3-16
Front Reading Lamps......................................3-16
Front Storage Area.........................................2-56
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6Fuel (cont.)
Gage.........................................................3-36
Gasoline Octane........................................... 5-4
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-36
System Inspection.......................................6-31
Fuses
Fuses and Circuit Breakers...........................5-99
Windshield Wiper.........................................5-98
G
Gage
Check Gages Warning Light..........................3-35
Engine Coolant Temperature.........................3-29
Fuel..........................................................3-36
Oil Pressure...............................................3-33
Speedometer..............................................3-24
Tachometer.................................................3-24
Voltmeter Gage...........................................3-26
Garage Door Opener.......................................2-44
Garment Hooks..............................................2-57
Gasoline
Octane........................................................ 5-4
Specications............................................... 5-5
Gate Ajar Light...............................................3-35
Gate Operator and Canadian Programming........2-48
Getting Familiar with Off-Road Driving................4-17
6

Glove Box.....................................................2-49
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-6
Headlamp High/Low-Beam Changer.................... 3-7
Headlamps....................................................5-50
Bulb Replacement.......................................5-50
Electrical System.........................................5-98
Halogen Bulbs............................................5-50
One-Piece Front Turn Signal Lamps...............5-52
Two-Piece Front Turn Signal Lamps...............5-53
Heated Seats................................................... 1-4
Heating.........................................................3-18
Highway Hypnosis...........................................4-38
Hill and Mountain Roads..................................4-38
Hitches..........................................................4-65
HomeLink
®Transmitter....................................2-44
HomeLink®Transmitter, Programming................2-46
Hood
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-5
How to Add Coolant to the Coolant
Recovery Tank............................................5-31
How to Add Coolant to the Radiator..................5-33How to Add Fluid....................................5-22, 5-23
How to Check................................5-20, 5-22, 5-68
How to Check and Add Fluid............................5-24
How to Check Lubricant..........................5-47, 5-49
How to Check Power Steering Fluid..................5-37
How to Inspect the Engine Air Cleaner/Filter.......5-18
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
Hydraulic Clutch.............................................5-23
Hydraulic Clutch System Check........................6-27
Hydroplaning..................................................4-34
I
If No Steam Is Coming From Your Engine..........5-28
If Steam Is Coming From Your Engine...............5-27
If the Light Is Flashing.....................................3-31
If the Light Is On Steady.................................3-32
If You Are Caught in a Blizzard.........................4-42
If You Are Stuck in Sand, Mud, Ice or Snow.......4-44
If You Decide To Pull A Trailer..........................4-61
Ignition Positions.............................................2-19
Ignition Transmission Lock Check......................6-29
Infants and Young Children, Restraints...............1-34
Ination - Tire Pressure...................................5-67
Inspection
Brake System.............................................6-32
Engine Cooling System................................6-31
Exhaust System..........................................6-31
7

Inspection (cont.)
Fuel System...............................................6-31
Part C - Periodic Maintenance.......................6-31
Steering, Suspension and Front Drive
Axle Boot and Seal..................................6-31
Throttle System...........................................6-32
Transfer Case and Front Axle
(Four-Wheel Drive)...................................6-32
Installing a Garage Door Opener.......................2-50
Instrument Panel
Cluster.......................................................3-22
Overview..................................................... 3-2
Instrument Panel Fuse Block............................5-99
Instrumental Panel Brightness...........................3-15
Interior Lamps................................................3-15
J
Jump Starting.................................................5-43
K
Key Lock Cylinders Service..............................6-28
Key Release Button........................................2-20
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Lamps
Exterior......................................................3-12
Interior.......................................................3-15
Lamps On Reminder.......................................3-13
Lap Belt................................................1-21, 1-27
Lap-Shoulder Belt...........................................1-14
LATCH System
Child Restraints...........................................1-44
Securing a Child Restraint Designed for the
LATCH System........................................1-46
Leaving Your Vehicle.......................................2-10
Leaving Your Vehicle With the Engine Running......2-38
Light
Air Bag Readiness.......................................3-25
Anti-Lock Brake System Warning...................3-29
Brake System Warning.................................3-28
Charging System.........................................3-26
Check Gages Warning.................................3-35
Gate Ajar...................................................3-35
Low Fuel Warning.......................................3-36
Malfunction Indicator....................................3-30
Safety Belt Reminder...................................3-24
Security.....................................................3-34
Service Four-Wheel-Drive Warning Light.........3-34
Tow/Haul Mode...........................................3-35
Up-Shift.....................................................3-27
Loading Your Vehicle.......................................4-54
Loading Your Vehicle for Off-Road Driving..........4-16
8

Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-10
Locks
Door........................................................... 2-7
Leaving Your Vehicle....................................2-10
Lockout Protection.......................................2-10
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Long Trip/Highway Denition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-18
Loss of Control...............................................4-14
Low Fuel Warning Light...................................3-36
Luggage Carrier..............................................2-57
Lumbar
Power Controls............................................. 1-3
M
Maintenance Schedule
At Each Fuel Fill.........................................6-26
At Least Once a Month................................6-26
At Least Once a Year..................................6-28
At Least Twice a Year..................................6-27
Brake System Inspection..............................6-32
Engine Cooling System Inspection.................6-31
Exhaust System Inspection...........................6-31
Fuel System Inspection................................6-31Maintenance Schedule (cont.)
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.....6-18
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-35
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-26
Part C - Periodic Maintenance Inspections......6-31
Part D - Recommended Fluids
and Lubricants.........................................6-33
Part E - Maintenance Record........................6-37
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-31
Throttle System Inspection............................6-32
Transfer Case and Front Axle
(Four-Wheel Drive) Inspection....................6-32
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-71
Making Turns.................................................4-68
Malfunction Indicator Light................................3-30
Manual Seats................................................... 1-2
Manual Transmission.......................................2-21
Fluid..........................................................5-22
Operation...................................................2-26
Manual Transmission Check.............................6-27
Memory Seat.................................................2-64
9