2007 GMC ACADIA power steering

A. Radiator Pressure Cap (Out of View).
SeeRadiator Pressure Cap on page 410.
B. Engine Coolant Recovery Cap. SeeCooling
System on page 413.
C. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 493.
D. Remote Positive (+) Terminal. SeeJump
Starting on page 425.
E. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 419.
F. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 397.
G. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 397.
H. Automatic Transmission Fluid Dipstick.
See “Checking the Fluid Level” under
Automatic Transmission Fluid on page 404.
I. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 421.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 402.
K. Windshield Washer Fluid Reservoir.
See “Adding Washer Fluid” under
Windshield Washer Fluid on page 420.Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil every time
you get fuel. In order to get an accurate reading,
the oil must be warm and the vehicle must be
on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 396
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil
several minutes to drain back into the oil
pan. If you do not do this, the oil dipstick might
not show the actual level.
2. Pull out the dipstick and clean it with a paper
towel or cloth, then push it back in all the
way. Remove it again, keeping the tip down,
and check the level.
397

Power Steering Fluid
The power steering uid
reservoir is located
toward the front of the
engine compartment
on the passenger’s side
of the vehicle. See
Engine Compartment
Overview on page 396
for reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering uid unless you suspect there is a leak
in the system or you hear an unusual noise. A uid
loss in this system could indicate a problem.
Have the system inspected and repaired.
How to Check Power Steering Fluid
To check the power steering uid, do the following:
1. Turn the key off and let the engine
compartment cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the
uid level on the dipstick.
The uid level should be somewhere within the
cross-hatched area on the dipstick. If the uid is
at the ADD mark, you should add uid.
What to Use
To determine what kind of uid to use, see
Recommended Fluids and Lubricants on page 511.
Always use the proper uid. Failure to use the
proper uid can cause leaks and damage hoses
and seals.
419

(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60,
as shown in item C of the illustration, it would
mean that the tire’s sidewall is 60 percent as high
as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certied to carry a
load. Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
439

Fuses Usage
FRT/WSW Front Windshield Wiper
SPARE Spare
HTD/SEAT Front Heated Seats
STR/WHL/
ILLUMSteering Wheel Illumination
MSM Memory Seat Module
PWR/MIRRORS Power Mirrors
DR/LCK Door Locks
AIRBAG Airbag System
LT/TRN/SIG Driver’s Side Turn Signal
REAR WIPER Rear Window Wiper
PWR MODPassKey Module, Body Control
Module
BCK/UP/STOP Back-up Lamps, Stoplamps
HVAC Climate Control System
DISPLAY Display
RT/TRN/SIG Passenger’s Side Turn Signal
Fuse Side
491

Relays Usage
LT/PWR/SEAT Driver’s Side Power Seat Relay
RT/PWR/SEAT Passenger’s Side Power Seat Relay
PWR/WNDW Power Windows Relay
PWR/COLUMN Power Steering Column Relay
L/GATE Liftgate Relay
LCK Power Lock Relay
REAR/WSW Rear Window Washer Relay
UNLCK Power Unlock Relay
DRL2 Daytime Running Lamps 2 Relay
LT/UNLCK Driver’s Side Unlock Relay
DRL Daytime Running Lamps Relay
SPARE Spare
FRT/WSW Front Windshield Washer RelayUnderhood Fuse Block
The underhood fuse block is located in the engine
compartment, on the passenger’s side of the
vehicle.
Lift the cover for access
to the fuse/relay block.
493

Maintenance Footnotes
(a)Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks, chafing,
etc. Inspect disc brake pads for wear and rotors for
surface condition. Inspect other brake parts,
including calipers, parking brake, etc. Check
parking brake adjustment.
(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, chafing, etc.
(c)Visually inspect hoses and have them replaced
if they are cracked, swollen, or deteriorated.
Inspect all pipes, fittings and clamps; replace with
genuine 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)Inspect wiper blades for wear, cracking, or
contamination. Clean the windshield and
wiper blades, if contaminated. Replace wiper
blades that are worn or damaged. See Windshield
Wiper Blade Replacement on page 434and
Windshield, Backglass, and Wiper Blades on
page 484for more information.
(e)Make sure the safety belt reminder light and all
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, hood latch
assemblies, secondary latches, pivots, spring
anchor and release pawl, hood and door hinges,
rear folding seats, and liftgate hinges. 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.
506

Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name,
part number, or specication can be obtained from
your dealer/retailer.
Usage Fluid/Lubricant
Engine OilEngine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certied for Gasoline Engines
starburst symbol. To determine the
proper viscosity for your vehicle’s
engine, seeEngine Oil on page 397.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 406.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184,
in Canada 89021186).
Automatic
TransmissionDEXRON
®-VI Automatic
Transmission Fluid.
Usage Fluid/Lubricant
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Carrier
Assembly —
Differential
(Rear Drive
Module) and
Transfer
Case (Power
Transfer Unit)SAE 75W-90 Synthetic
Axle Lubricant
(GM Part No. U.S. 89021677,
in Canada 89021678) meeting
GM Specication 9986115.
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring
Anchor, and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293,
in Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and
Door Hinges
and Rear
Folding SeatMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Weatherstrip
ConditioningWeatherstrip Lubricant
(GM Part No. U.S. 3634770,
in Canada 10953518) or
Dielectric Silicone Grease
(GM Part No. U.S. 12345579,
in Canada 992887).
511

Audio System.............................................. 264
Audio Steering Wheel Controls................. 325
Care of Your CD and DVD Player............ 328
Care of Your CDs and DVDs................... 328
Navigation/Radio System,
see Navigation Manual......................... 311
Radio with CD......................................... 268
Rear Audio Controller (RAC).................... 324
Rear Seat Audio (RSA)............................ 322
Setting the Time...................................... 266
Theft-Deterrent Feature............................ 325
Understanding Radio Reception............... 326
Audio System(s)
Radio with CD and DVD.......................... 278
Automatic Transmission
Fluid........................................................ 404
Operation................................................. 129B
Battery........................................................ 424
Electric Power Management..................... 188
Run-Down Protection............................... 189
Before Leaving on a Long Trip.................... 352
Brake
Emergencies............................................ 336
Parking.................................................... 134
Brakes........................................................ 421
System Warning Light.............................. 222
Braking....................................................... 334
Braking in Emergencies............................... 336
Break-In, New Vehicle................................. 123
Bulb Replacement....................................... 432
Halogen Bulbs......................................... 432
Headlamp Aiming..................................... 431
High Intensity Discharge (HID) Lighting.... 432
License Plate Lamps................................ 433
Replacement Bulbs.................................. 433
Buying New Tires........................................ 450
540