2005 GMC ENVOY XL cooling

Fuses Usage
57 Headlamp Driver Module
58 Truck Body Controller 1
59 Electric Adjustable Pedal
Relay Usage
37 Headlamp Washer
38 Rear Window Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Washer
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedal
60 Powertrain
Miscellaneous Usage
48 Instrument Panel Battery
Rear Underseat Fuse Block
Envoy
5-98

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids and
Lubricants on page 6-12for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a
Standard Wheel Base 1.9 lbs 0.85 kg
Extended Wheel Base 2.8 lbs 1.27 kg
Cooling System
4200 L6 Standard Wheel Base 10.8 qt 10.2 L
4200 L6 Extended Wheel Base 13.8 qt 13.1 L
5300 V8 Standard Wheel Base 12.2 qt 11.6 L
5300 V8 Extended Wheel Base 15.3 qt 14.5 L
Differential Fluid — Front 1.7 pt 0.8 L
Differential Fluid – Rear
4200 L6 3.6 pt 1.7 L
5300 V8 4.3 pt 2.0 L
5-103

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-15. Reset oil
life system. SeeEngine Oil Life System on page 5-18.An Emission
Control Service.••
Visually check for any leaks or damage.See footnote (j).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine
Air Cleaner/Filter on page 5-19.See footnote (k).•
Rotate tires and check ination pressures and wear. SeeTire Inspection and
Rotation on page 5-57and “Tire Wear Inspection” inAt Least Once a Month
on page 6-9.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as
needed.••
Perform any needed additional services. See “Additional Required Services”
in this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transmission uid level and add uid as needed.•
6-5

Additional Required Services
The following services should be performed at the rst maintenance service (IorII) after the indicated miles (kilometers)
shown for each item.
Additional Required Services
Service and Miles (Kilometers)25,000
(41 500)50,000
(83 000)75,000
(125 000)100,000
(166 000)125,000
(207 500)150,000
(240 000)
Inspect fuel system for damage or leaks.• •••••
Inspect exhaust system for loose or damaged
components.• •••••
Replace engine air cleaner lter. SeeEngine
Air Cleaner/Filter on page 5-19.•••
Change automatic transmission uid and lter
(severe service).See footnote (h).•••
Change automatic transmission uid and lter
(normal service).•
Automatic transfer case only: Change transfer
case uid.See footnote (g).•••
Replace spark plugs.An Emission Control
Service.•
V8 engine only: Inspect spark plug wires.
An Emission Control Service.•
Engine cooling system service (or every
ve years, whichever occurs rst).An
Emission Control Service. See footnote (i).•
Inspect engine accessory drive belt.An
Emission Control Service. See footnote (l).•
6-6

Maintenance Footnotes
(a)Visually 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. Inspect other brake parts, including calipers,
parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts or
signs of wear. Inspect power steering lines and hoses
for proper hook-up, binding, leaks, cracks, chang, etc.
(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 wiper blades 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 anythingthat 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 airbag
coverings, and have them repaired or replaced.
The airbag 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)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.
6-7

(i)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-23 for
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.
(k)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
(l)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist
you with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 5-15for
further details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 5-23for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
6-8

Check
Engine Light...............................................3-41
Gages Warning Light...................................3-47
Check Gas Cap Light......................................3-48
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-88
Child Restraints
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 Center
Seat Position...........................................1-48
Securing a Child Restraint in the Right
Front Seat Position...................................1-49
Top Strap...................................................1-41
Top Strap Anchor Location............................1-42
Where to Put the Restraint...........................1-40
Chime Level Adjustment.................................3-129
Cigarette Lighter.............................................3-20
Cleaning
Aluminum Wheels........................................5-87
Exterior Lamps/Lenses.................................5-85
Fabric/Carpet..............................................5-83
Finish Care.................................................5-86Cleaning (cont.)
Inside of Your Vehicle..................................5-82
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-84
Leather......................................................5-84
Tires..........................................................5-88
Underbody Maintenance...............................5-88
Washing Your Vehicle...................................5-85
Weatherstrips..............................................5-85
Windshield, Backglass, and Wiper Blades.......5-86
Climate Control System
Dual..........................................................3-20
Dual Automatic............................................3-23
Outlet Adjustment........................................3-27
Rear..........................................................3-28
Comfort Guides, Rear Safety Belt.....................1-27
Content Theft-Deterrent....................................2-17
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-58
Coolant
Engine Temperature Gage............................3-40
Heater, Engine............................................2-23
Cooling System..............................................5-28
Cruise Control................................................3-11
Cruise Control Light........................................3-46
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
3