2008 GMC ACADIA engine

Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-35.
Be ready to apply the regular brake immediately if
the vehicle begins to move.3. With the engine off, turn the ignition to ON/RUN,
but do not start the engine. Without applying the
regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), contact your dealer/retailer
for service.Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK/OFF in each shift lever position.
The ignition should turn to LOCK/OFF only
when the shift lever is in PARK (P).
The ignition key should come out only in
LOCK/OFF.
Contact your dealer/retailer if service is required.
6-10

Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set
the parking brake.
To check the parking brake’s holding ability:
With the engine running and the transmission
in NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle
is held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Contact your dealer/retailer if service is required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-11

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 5-15.
Usage Fluid/Lubricant
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 5-22.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherOptikleen
®Washer Solvent.
Power Steering
SystemGM Power Steering Fluid (GM Part
No. U.S. 89021184, in
Canada 89021186).
Automatic
TransmissionDEXRON
®-VI Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
6-12

Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your dealer/retailer.
Part Part Number ACDelco®Part Number
Engine Air Cleaner/Filter 15278634 —
Engine Oil Filter 89017524 PF48
Spark Plugs 12611882 41-107
Windshield Wiper Blades
Right – 20.8 inches (53.0 cm) 15254804 —
Left – 24.6 inches (62.5 cm) 15254805 —
Rea – 11.6 inches (30.0 cm) 15276259 —
6-14

Engine Drive Belt Routing
3.6L V6 Engine
6-15

Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, notify Transport Canada
immediately, in addition to notifying General Motors of
Canada Limited. Call them at 1-800-333-0510
or write to:
Transport Canada
Road Safety Branch
2780 Sheffield Road
Ottawa, Ontario K1B 3V9
Reporting Safety Defects to General
Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, please notify General Motors.
Call 1-800-GMC-8782 (1-800-462-8782), or write:
GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
In Canada, call 1-800-263-3777 (English) or
1-800-263-7854 (French), or write:
General Motors of Canada Limited
Customer Communication Centre, CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins’ give additional technical service
information needed to knowledgeably service General
Motors cars and trucks. Each bulletin contains
instructions to assist in the diagnosis and service of
your vehicle.
Owner Information
Owner publications are written specically for owners
and intended to provide basic operational information
about the vehicle. The owner manual includes the
Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00 (U.S.) plus processing fee
Without Portfolio: Owner Manual only.
RETAIL SELL PRICE: $25.00 (U.S.) plus processing fee
7-14

Current and Past Model Order Forms
Technical Service Bulletins and Manuals are available
for current and past model GM vehicles. To request
an order form, specify year and model name of
the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc.
on the World Wide Web at: www.helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
Vehicle Data Recording and
Privacy
Your GM vehicle has a number of sophisticated
computers that record information about the vehicle’s
performance and how it is driven. For example,
your vehicle uses computer modules to monitor and
control engine and transmission performance, to monitor
the conditions for airbag deployment and deploy
airbags in a crash and, if so equipped, to provide
antilock braking to help the driver control the vehicle.
These modules may store data to help your
dealer/retailer technician service your vehicle. Some
modules may also store data about how you operate
the vehicle, such as rate of fuel consumption or average
speed. These modules may also retain the owner’s
personal preferences, such as radio pre-sets, seat
positions, and temperature settings.
7-15

A
Accessories and Modications............................ 5-4
Adding Equipment to Your Airbag-Equipped
Vehicle.......................................................1-76
Additives, Fuel................................................. 5-7
Add-On Electrical Equipment............................5-99
Air Cleaner/Filter, Engine.................................5-20
Air Conditioning......................................3-26, 3-29
Airbag
Passenger Status Indicator...........................3-43
Readiness Light..........................................3-42
Airbag System................................................1-61
What Will You See After an Airbag Inates?....1-69
When Should an Airbag Inate?....................1-67
Where Are the Airbags?...............................1-64
Airbag Systems
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................1-76
How Does an Airbag Restrain?......................1-68
Passenger Sensing System...........................1-70
Servicing Your Airbag-Equipped Vehicle..........1-75
What Makes an Airbag Inate?......................1-68
All-Wheel Drive...............................................5-43
All-Wheel-Drive (AWD) System........................... 4-9
Antilock Brake System (ABS)............................. 4-5
Antilock Brake, System Warning Light................3-48Appearance Care
Aluminum or Chrome-Plated Wheels..............5-94
Care of Safety Belts....................................5-92
Chemical Paint Spotting...............................5-96
Cleaning Exterior Lamps/Lenses....................5-93
Fabric/Carpet..............................................5-90
Finish Care.................................................5-93
Finish Damage............................................5-95
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-91
Interior Cleaning..........................................5-89
Leather......................................................5-91
Sheet Metal Damage...................................5-95
Tires..........................................................5-95
Underbody Maintenance...............................5-96
Vehicle Care/Appearance Materials................5-97
Washing Your Vehicle...................................5-92
Weatherstrips..............................................5-92
Windshield, Backglass, and Wiper Blades.......5-94
Appointments, Scheduling Service....................... 7-8
Audio System.................................................3-84
Audio Steering Wheel Controls....................3-128
Navigation/Radio System, see Navigation
Manual.................................................3-115
Radio Reception........................................3-129
Rear Audio Controller (RAC)........................3-127
Rear Seat Audio (RSA)...............................3-125
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