2005 GMC JIMMY heater

When the engine is cold, the coolant level should be at
least up to the ADD mark. If it is not, you may have a leak
at the pressure cap or in the radiator hoses, heater
hoses, radiator, water pump or somewhere else in the
cooling system.
{CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them.
If you do, you can be burned.
Do not run the engine if there is a leak.
If you run the engine, it could lose all coolant.
That could cause an engine re, and you could
be burned. Get any leak xed before you drive
the vehicle.If there seems to be no leak, start the engine again.
The engine cooling fan speed should increase when idle
speed is doubled by pushing the accelerator pedal
down. If it does not, your vehicle needs service.
Turn off the engine.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-29

How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at the ADD mark, add a 50/50 mixture
ofclean, drinkable waterand DEX-COOL
®engine
coolant at the coolant recovery tank. SeeEngine
Coolant on page 5-24for more information.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
When the coolant in the coolant recovery tank is at the
ADD mark, start your vehicle.
If the overheat warning continues, there is one more
thing you can try. You can add the proper mixture
directly to the radiator, but be sure the cooling system is
cool before you do it.
5-30

Child Restraints
Center Seat Positions..................................1-49
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-42
Older Children.............................................1-29
Securing a Child Restraint Designed for
the LATCH System...................................1-44
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-45
Securing a Child Restraint in the Right
Front Seat Position...................................1-47
Top Strap...................................................1-39
Top Strap Anchor Location............................1-41
Where to Put the Restraint...........................1-38
Cigarette Lighter.............................................3-19
Cleaning
Aluminum Wheels........................................5-86
Exterior Lamps/Lenses.................................5-85
Fabric/Carpet..............................................5-81
Finish Care.................................................5-85
Glass Surfaces............................................5-84
Instrument Panel.........................................5-83
Interior Plastic Components...........................5-83
Leather......................................................5-83
Tires..........................................................5-87
Underbody Maintenance...............................5-87
Vinyl..........................................................5-83
Washing Your Vehicle...................................5-84
Weatherstrips..............................................5-84Cleaning (cont.)
Windshield, Backglass, and Wiper Blades.......5-86
Wood Panels..............................................5-83
Climate Control System...................................3-20
Outlet Adjustment........................................3-22
Clutch, Hydraulic.............................................5-23
Comfort Guides, Rear Safety Belt.....................1-26
Content Theft-Deterrent....................................2-18
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-54
Convenience System, Rear..............................2-55
Coolant
Engine Temperature Gage............................3-31
Heater, Engine............................................2-24
Cooling System..............................................5-28
Cruise Control Lever.......................................3-11
Customer Assistance Information
Courtesy Transportation.................................. 7-7
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....7-11
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
3

D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-3
Doing Your Own Service Work........................... 5-4
Dome Lamps.................................................3-18
Door
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-11
Driver
Position, Safety Belt.....................................1-14
Driver Behavior................................................ 4-2
Driver Information Center (DIC).........................3-39
Driving
At Night.....................................................4-28
City...........................................................4-32
Defensive..................................................... 4-3
Drunken....................................................... 4-4
Environment................................................. 4-2
Freeway.....................................................4-33
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-30
Recovery Hooks..........................................4-43
Rocking Your Vehicle to Get it Out.................4-42
Winter........................................................4-38
E
Electrical System
Add-On Equipment......................................5-90
Engine Compartment Fuse Block...................5-92
Fuses and Circuit Breakers...........................5-90
Headlamps.................................................5-90
Instrument Panel Fuse Block.........................5-91
Power Windows and Other Power Options......5-90
Windshield Wiper Fuses...............................5-90
Engine
Air Cleaner/Filter.........................................5-17
Battery.......................................................5-38
Check and Service Engine Soon Light............3-31
Coolant......................................................5-24
Coolant Heater............................................2-24
Coolant Temperature Gage...........................3-31
Cooling System Inspection............................6-31
Engine Compartment Overview......................5-12
Exhaust.....................................................2-40
Fan Noise..................................................5-33
Oil .............................................................5-13
Overheating................................................5-26
Starting......................................................2-23
Entry Lighting.................................................3-18
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-28
Exterior Lamps...............................................3-14
4

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamps....................................................5-46
Automatic Headlamp System.........................3-16
Bulb Replacement.......................................5-45
Daytime Running Lamps...............................3-15
Electrical System.........................................5-90
Flash-to-Pass............................................... 3-9
Halogen Bulbs............................................5-46
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-15
One-Piece Front Turn Signal Lamps...............5-48
Two-Piece Front Turn Signal Lamps...............5-49
Heated Seats................................................... 1-4
Heater...........................................................3-20
Highbeam On Light.........................................3-35
Highway Hypnosis...........................................4-35
Hill and Mountain Roads..................................4-36
HomeLink
®Transmitter....................................2-45
HomeLink®Transmitter, Programming................2-46
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
Hydraulic Clutch.............................................5-23
I
Ignition Positions.............................................2-21
Infants and Young Children, Restraints...............1-31
Ination -- Tire Pressure..................................5-59
Inspection
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
Instrument Panel
Brightness..................................................3-18
Cluster.......................................................3-24
Overview..................................................... 3-4
J
Jump Starting.................................................5-39
K
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
6