ECU CHEVROLET BLAZER 2003 2.G Service Manual

3. Put the chisel end of the wheel wrench, on an
angle, through the hole in the rear bumper and
into the hoist shaft.
4. Raise the tire fully against the underside of the
vehicle by turning the wrench clockwise until you
hear two clicks or feel it skip twice. The spare
tire hoist cannot be overtightened.
5. Make sure the tire is stored securely. Push, pull,
and then try to turn the tire. If the tire moves, use
the wheel wrench to tighten the cable.Follow this diagram for the inside-mounted spare.
A. Spare or Flat Tire
B. Retainer
C. NutD. Wheel Carrier
E. Hook
5-73

Follow this diagram for the rear-mounted spare.
A. Wheel Carrier
B. Spare or Flat TireC. Wheel Nut and
Locking Nut
Cylinder (If
Equipped)6. Reinstall the locking wheel nut using the wheel
wrench. Then push the lock case onto the lug
nut until it stops. The key does not have to
be inserted into the lock. Push the lock case to be
sure it is secured. The special lug nut and lock
case is not intended to be used on any road wheel,
only on the spare wheel carrier. Tighten the nuts
on the wheel carrier to 22 to 32 lb-ft (30 to 40 N´m).
{CAUTION:
Make sure the tire and carrier are secure.
Driving with the tire or carrier unlatched could
injure pedestrians or damage the vehicle.
7. Return the jack, wheel wrench and wheel blocks to
the proper location in your vehicle's rear area.
Secure the items and replace the jack cover.
5-74

Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-37for further details.
At Least Twice a Year
Restraint System Check
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.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or that
streak or miss areas of the windshield. Also see
Cleaning the Outside of Your Vehicle on page 5-79.
Spare Tire Check
At least twice a year, after the monthly in¯ation check of
the spare tire determines that the spare is in¯ated to
the correct tire in¯ation pressure, make sure that
the spare tire is stored securely. Push, pull, and then try
to rotate or turn the tire. If it moves, use the wheel
wrench to tighten the cable. See
Changing a Flat Tire
on page 5-63.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. See
Part D: Recommended Fluids and
Lubricants on page 6-33.
6-27

Center Front Passenger Position, Safety Belts....1-22
Center Rear Passenger Position, Safety Belts.....1-27
Center Seat Positions, Child Restraints..............1-51
Chains, Tires..................................................5-62
Charging System Light....................................3-26
Checking Brake Fluid......................................5-38
Checking Coolant............................................5-24
Checking Engine Oil........................................5-11
Checking Things Under the Hood....................... 5-8
Checking Your Restraint Systems......................1-58
Check...........................................................3-30
Engine Light...............................................3-30
Gages Warning Light...................................3-35
Chemical Paint Spotting...................................5-82
Child Restraints..............................................1-51
Center Seat Positions..................................1-51
Child Restraint Systems...............................1-38
Infants and Young Children...........................1-34
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-44
Older Children.............................................1-32
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...........................................1-49
Top Strap Anchor Location............................1-43Child Restraints (cont.)
Top Strap...................................................1-42
Where to Put the Restraint...........................1-41
Cigarette Lighter.............................................3-16
Cleaning Aluminum Wheels..............................5-80
Cleaning Exterior Lamps/Lenses.......................5-79
Cleaning Fabric/Carpet....................................5-77
Cleaning Glass Surfaces..................................5-78
Cleaning Interior Plastic Components.................5-78
Cleaning Leather............................................5-77
Cleaning the Mirror.........................................2-42
Cleaning the Photocells...................................2-42
Cleaning the Top of the Instrument Panel...........5-78
Cleaning the Windshield, Backglass and
Wiper Blades..............................................5-80
Cleaning Tires................................................5-81
Cleaning Vinyl................................................5-77
Cleaning Wood Panels....................................5-78
Cleaning........................................................5-77
Inside of Your Vehicle..................................5-77
Outside of Your Vehicle................................5-79
Underbody Maintenance...............................5-81
Weatherstrips..............................................5-79
Climate Control System...................................3-17
Outlet Adjustment........................................3-20
Clutch, Hydraulic.............................................5-21
Column Shift Lever.........................................2-35
Compact Disc Messages.................3-47, 3-57, 3-68
Compact Spare Tire........................................5-75
Console Shift Lever.........................................2-36
3

Content Theft-Deferrent....................................2-17
Control of a Vehicle.......................................... 4-7
Convenience Net............................................2-57
Convenience System, Rear..............................2-59
Coolant.........................................................3-29
Engine Temperature Gage............................3-29
Heater, Engine............................................2-22
Cooling System..............................................5-27
Cooling.........................................................3-18
Cruise Control.................................................. 3-8
Current and Past Model Order Forms................7-12
Customer Assistance Information........................ 7-8
Courtesy Transportation.................................. 7-8
Customer Assistance for Text Telephone
(TTY) Users.............................................. 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-6
Reporting Safety Defects to General Motors....7-10
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United
States Government...................................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11D
Daytime Running Lamps..................................3-12
Defensive Driving............................................. 4-3
Defogging and Defrosting.................................3-19
Dinghy Towing................................................4-46
Directing the Air¯ow........................................3-17
Doing Your Own Service Work........................... 5-3
Dolly Towing (Two-Wheel Drive Vehicles)...........4-50
Dolly Towing (Vehicles with Automatic
Transfer Case)............................................4-48
Dolly Towing (Vehicles with Electronic
Transfer Case)............................................4-48
Dome Lamps.................................................3-15
Door............................................................... 2-7
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Driver Behavior................................................ 4-2
Driver Information Center (DIC).........................2-53
Driver............................................................1-15
Position, Safety Belt.....................................1-15
Driving Across an Incline..................................4-24
Driving Downhill..............................................4-23
Driving in Mud, Sand, Snow or Ice....................4-26
Driving in Water..............................................4-27
4

Inspection......................................................6-32
Brake System.............................................6-32
Engine Cooling System................................6-31
Exhaust System..........................................6-31
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.......................2-49
Instrument Panel Fuse Block............................5-86
Instrument Panel.............................................3-22
Cluster.......................................................3-22
Overview..................................................... 3-2
Instrumental Panel Brightness...........................3-14
Interior Lamps................................................3-14
J
Jump Starting.................................................5-41
K
Key Lock Cylinders Service..............................6-28
Key Release Button........................................2-20
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Lamps On Reminder.......................................3-12
Lamps...........................................................3-11
Exterior......................................................3-11
Interior.......................................................3-14
Lap Belt................................................1-22, 1-27
Lap-Shoulder Belt...........................................1-15
LATCH System...............................................1-44
Child Restraints...........................................1-44
Securing a Child Restraint Designed for the
LATCH System........................................1-46
Leaving Your Vehicle With the Engine Running . . . 2-37
Leaving Your Vehicle.......................................2-10
Light.............................................................3-25
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
8

Light (cont.)
Gate Ajar...................................................3-35
Low Fuel Warning.......................................3-36
Malfunction Indicator....................................3-30
Safety Belt Reminder...................................3-25
Security.....................................................3-34
Service Four-Wheel-Drive Warning Light.........3-34
Tow/Haul Mode...........................................3-35
Up-Shift.....................................................3-27
Loading Your Vehicle for Off-Road Driving..........4-16
Loading Your Vehicle.......................................4-52
Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-10
Locks............................................................. 2-7
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 De®nition.............................. 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..............................................2-56
Lumbar........................................................... 1-4
Manual Controls............................................ 1-4
Power Controls............................................. 1-4M
Maintenance, Normal Replacement Parts............5-92
Maintenance Schedule.....................................6-26
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................................6-31
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.....6-18
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-26
Part C - Periodic MaintenanceInspections......6-31
Part D - Recommended Fluids
and Lubricants.........................................6-33
Part E - Maintenance Record........................6-35
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
9

Radios (cont.)
Theft-Deterrent............................................3-68
Understanding Reception..............................3-69
RDS Messages..............................3-44, 3-52, 3-62
Rear Axle......................................................5-45
Locking......................................................4-10
Rear Door Security Locks................................2-10
Rear Safety Belt Comfort Guides......................1-29
Rear Seat Operation......................................... 1-7
Rear Seat Outside Passenger Positions.............1-24
Rear Seat Passengers, Safety Belts..................1-24
Rear Window Defogger....................................3-19
Rear Window.................................................2-13
Rearview Mirror, Automatic Dimming..................2-41
Rearview Mirrors.............................................2-41
Reclining Seatbacks.......................................... 1-5
Recreational Vehicle Towing.............................4-45
Remote Keyless Entry System, Operation............ 2-5
Remote Keyless Entry System............................ 2-4
Remote Rear Glass Release............................2-15
Removing the Flat Tire and Installing the
Spare Tire..................................................5-67
Removing the Spare Tire and Tools...................5-63
Removing the Wheel Cover..............................5-66
Replacement Bulbs.........................................5-52
Replacing Brake System Parts..........................5-40
Replacing Restraint System Parts
After a Crash..............................................1-59
Reporting Safety Defects.................................7-10
Canadian Government..................................7-10Reporting Safety Defects (cont.)
General Motors...........................................7-10
United States Government............................7-10
Reprogramming a Single HomeLink
žButton.......2-47
Resetting Defaults...........................................2-48
Restraint System Check...................................6-27
Checking Your Restraint Systems...................1-58
Replacing Restraint System Parts
After a Crash..........................................1-59
Restraint Systems...........................................1-58
Checking....................................................1-58
Replacing Parts...........................................1-59
Retained Accessory Power (RAP)......................2-21
Right Front Passenger Position, Safety Belts......1-22
Roadside......................................................... 7-6
Assistance Program....................................... 7-6
Rocking Your Vehicle To Get It Out...................4-43
Running Your Engine While You Are Parked.......2-39
S
Safety Belt.....................................................3-25
Reminder Light............................................3-25
Safety Belts...................................................5-78
Care of......................................................5-78
Center Front Passenger Position....................1-22
Center Rear Passenger Position....................1-27
Driver Position............................................1-15
How to Wear Safety Belts Properly................1-14
12

Safety Belts (cont.)
Questions and Answers About Safety Belts.....1-13
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-29
Rear Seat Passengers.................................1-24
Right Front Passenger Position......................1-22
Safety Belt Extender....................................1-31
Safety Belt Use During Pregnancy.................1-21
Safety Belts Are for Everyone......................... 1-9
Safety Chains.................................................4-59
Safety Warnings and Symbols.............................. iii
Scanning the Terrain.......................................4-18
Seat............................................................... 1-7
Head Restraints............................................ 1-7
Seats.............................................................. 1-5
Heated Seats............................................... 1-5
Manual Lumbar............................................. 1-4
Manual........................................................ 1-2
Memory.....................................................2-61
Power Lumbar.............................................. 1-4
Power Seats................................................. 1-3
Rear Seat Operation...................................... 1-7
Reclining Seatbacks...................................... 1-5
Securing a Child Restraint................................1-46
Designed for the LATCH System...................1-46
Rear Outside Seat Position...........................1-46
Right Front Seat Position..............................1-49
Security Light.................................................3-34
Selecting the Right Schedule, Maintenance.......... 6-5
Service Bulletins.............................................7-11Service Engine Soon Light in the United States
or Check Engine Light in Canada..................3-30
Service Manuals.............................................7-11
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-30
Four-Wheel-Drive Warning Light.....................3-34
Publications Ordering Information...................7-11
Servicing Your Air Bag-Equipped Vehicle............1-57
Setting Preset PTYs........................................3-62
Setting Preset Stations............3-39, 3-42, 3-49, 3-59
Setting the Time.............................................3-38
Radios with Radio Data Systems (RDS).........3-38
Radios without Radio Data Systems (RDS).....3-37
Setting the Tone
(Bass/Treble)......................3-39, 3-42, 3-50, 3-59
Sheet Metal Damage.......................................5-81
Shifting Into Park (P).......................................2-35
Shifting Out of Park (P)...................................2-37
Short Trip/City De®nition.................................... 6-5
Short Trip/City Intervals..................................... 6-5
Short Trip/City Scheduled Maintenance................ 6-6
Skidding........................................................4-14
Some Other Rainy Weather Tips.......................4-32
Spare Tire Check............................................6-27
Spare Tire.....................................................5-76
Speci®cations, Capacities.................................5-91
Speedometer..................................................3-24
13