2007 PONTIAC G6 cooling

2. Then keep turning
the pressure cap
slowly, and
remove it.
3. Fill the coolant surge tank with the proper
mixture, to the FULL COLD mark. Wait about
ve minutes, then check to see if the level is
below the mark. If the level is below the FULL
COLD mark, add additional coolant to bring the
level up to the mark. Repeat this procedure
until the level remains constant at the FULL
COLD mark for at least ve minutes.
4. With the coolant surge tank pressure cap off,
start the engine and let it run until you can
feel the upper radiator hose getting hot. Watch
out for the engine cooling fans.By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower
than the FULL COLD mark, add more of the
proper mixture to the coolant surge tank until
the level reaches the FULL COLD mark.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
Power Steering Fluid
SeeEngine
Compartment
Overview on page 318
for reservoir location.
349

Wheel Replacement
Replace any wheel that is bent, cracked, or badly
rusted or corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and wheel nuts
should be replaced. If the wheel leaks air, replace
it (except some aluminum wheels, which can
sometimes be repaired). See your dealer if any of
these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same
load-carrying capacity, diameter, width, offset and
be mounted the same way as the one it replaces.
If you need to replace any of your wheels, wheel
bolts, or wheel nuts, replace them only with new
GM original equipment parts. This way, you will be
sure to have the right wheel, wheel bolts, and wheel
nuts for your vehicle.{CAUTION:
Using the wrong replacement wheels,
wheel bolts, or wheel nuts on your vehicle
can be dangerous. It could affect the
braking and handling of your vehicle,
make your tires lose air and make you
lose control. You could have a collision
in which you or others could be injured.
Always use the correct wheel, wheel bolts,
and wheel nuts for replacement.
Notice:The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration, headlamp
aim, bumper height, vehicle ground clearance,
and tire or tire chain clearance to the body and
chassis.
SeeChanging a Flat Tire on page 390for more
information.
388

Fuses Usage
7 Left Headlamp Low Beam
8 Horn
9 Right Headlamp Low Beam
10 Front Fog Lamps
11 Left Headlamp High Beam
12 Right Headlamp High Beam
13Engine Control Module (BATT)
(LE5, LY7)
14 Windshield Wiper
15 Anti-lock Brake System (IGN 1)
16Engine Control Module (IGN 1)
(LE5, LY7)
17 Cooling Fan 1
18 Cooling Fan 2
19Run Relay, Heating, Ventilation,
Air Conditioning Blower
20 Body Control Module 1
21 Body Control Module Run/Crank
22 Rear Electrical Center 1Fuses Usage
23 Rear Electrical Center 2
24 Anti-lock Brake System
25 Body Control Module 2
26 Starter
41 Electric Power Steering
42 Transaxle Control Module Battery
43Ignition Module (LE5, LZ4, LZ9),
Odd Cylinder Injectors/Ignition
Coils (LY7)
44Injectors (LE5, LZ4, LZ9),
Even Cylinder Injectors/Ignition
Coils (LY7)
45 Rear Oxygen Sensors
46 Daytime Running Lamps
47 Center High-Mounted Stoplamp
50Front Power Windows
Coupe/Retractable Hardtop
51Engine Control Module (BATT)
(LZ4, LZ9)
420

Relays Usage
28 Cooling Fan 1
29 Cooling Fan Series/Parallel
30 Cooling Fan 2
31 Starter
32 Run/Crank, Ignition
33 Powertrain
34 Air Conditioning Clutch
35 High Beam
36 Front Fog Lamps
37 Horn
38 Low Beam
39 Windshield Wiper 1
40 Windshield Wiper 2
48 Daytime Running Lamps
49 Center High-Mounted Stoplamp
Diodes Usage
27 Wiper
Rear Compartment Fuse Block
The rear compartment fuse block is located in the
trunk of the vehicle. Access the fuse block through
the trunk panel on the driver’s side of the rear
cargo area.
421

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 442for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant
charge amount, see the refrigerant caution
label located under the hood. See your dealer
for more information.
Automatic Transaxle
Automatic 4-Speed 4T65 Transaxle 7.4 qt 7.0 L
Automatic 4-Speed 4T45 Transaxle 7.4 qt 7.0 L
Automatic 6-Speed 6T70 Transaxle 9.5 qt 9.0 L
Manual Transaxle 3.1 qt 2.9 L
Cooling System
2.4L Engine 7.5 qt 7.1 L
3.5L, 3.6L, 3.9L V6 Engines 9.9 qt 9.4 L
424

Scheduled Maintenance (cont’d)
Service MaintenanceIMaintenanceII
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).•
Inspect throttle system.See footnote (g).•
433

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
3.6L (Code 7) V6 Engine Only: Change
automatic transaxle uid (normal
service).•
Replace spark plugs. 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 (m).•
435

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 electric power
steering cables for proper hook-up, binding,
cracks, chang, etc. Inspect hydraulic 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 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 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 airbag coverings,
and have them repaired or replaced. The
airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders, door hinges
and latches, hood hinges and latches, and trunk lid
hinges and latches. 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 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 or cruise control cables.
436