Usage Fluid/Lubricant
Manual
Transmission
(ZF 6-Speed)Synthetic Transmission Fluid
approved to Allison Transmission
®
specification TES-295
(GM Part No. U.S. 12378515, in
Canada 88900701).
Automatic
TransmissionSee the Allison Transmission
®
Operator’s Manual for correct
transmission fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Chassis
LubricationChassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Front Wheel
Bearings
(Except Oil
Filled Hubs)Wheel bearing lubricant meeting
requirements of NLGI #2,
Category GC or GC-LB
(GM Part No. U.S. 1051344, in
Canada 993037).
Front Wheel
Bearings with
Oil Filled HubsSAE 75W-90 Synthetic Axle
Lubricant for Medium Duty Trucks
(GM Part No. U.S. 89021675, in
Canada 10953512).
Transfer Case
(Four-Wheel
Drive)DEXRON
®-III Automatic
Transmission Fluid. Look for
“Approved for the H-Specification”
on the label.
Usage Fluid/Lubricant
Front Axle
(Four-Wheel
Drive)SAE 75W-90 Synthetic Axle
Lubricant for Medium Duty Trucks
(GM Part No. U.S. 89021675, in
Canada 10953512).
Rear Axle and
Rear HubsSAE 75W-90 Synthetic Axle
Lubricant for Medium Duty Trucks
(GM Part No. U.S. 89021675, in
Canada 10953512).
Rear Axle Shift
Motor LubricantRefrigerant Oil
(GM Part No. U.S. 5416939, in
Canada 10953496).
Propshafts and
SplinesWheel bearing lubricant meeting
requirements of NLGI #2,
Category GC or GC-LB
(GM Part No. U.S. 1051344, in
Canada 993037).
Cab — Door
Hinges and
LatchesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Weatherstrip
ConditioningDielectric Silicone Grease
(GM Part No. U.S. 12345579, in
Canada 992887).
Weatherstrip
SqueaksSynthetic Grease with Teflon,
Superlube (GM Part No.
U.S. 12371287, in
Canada 10953437).
6-34
Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, you should immediately notify
Transport Canada, in addition to notifying General
Motors of Canada Limited. You may call them at
1-800-333-0510 or write to:
Transport Canada
Place de Ville Tower C
330 Sparks Street
Ottawa, Ontario K1A 0N5
Reporting Safety Defects to
General Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, we certainly hope you’ll notify us.
Please call us at 1-800-862-4389, or write:
GM Medium Duty Truck
Customer Assistance Center
P.O. Box 44947
Detroit, MI 48244
In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 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.
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and specifications for
GM transmissions, transaxles, and transfer cases.
Service Bulletins
Service Bulletins give 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.
In Canada, information pertaining to Product Service
Bulletins can be obtained by contacting your General
Motors dealer or by calling 1-800-GM-DRIVE
(1-800-463-7483).
7-11
Audio System(s).............................................3-48
AM-FM Radio.............................................3-50
Care of Your Cassette Tape Player................3-65
Care of Your CD Player...............................3-67
Care of Your CDs ........................................3-66
Chime Level Adjustment...............................3-67
Fixed Mast Antenna.....................................3-67
Radio with Cassette.....................................3-53
Radio with CD............................................3-59
Setting the Time..........................................3-49
Theft-Deterrent Feature................................3-64
Understanding Radio Reception.....................3-64
Automatic Ether Injection System......................5-72
Automatic Transmission
Fluid..........................................................5-36
Operation...................................................2-30
Axle, Two-Speed Rear Axle Electric
Shift Control...............................................2-28
B
Battery..........................................................5-58
Bench Seat, Split............................................. 1-6
Brake
Anti-Lock Brake System (ABS)........................ 4-8
Diesel Engine Exhaust.................................2-27
Emergencies................................................ 4-9
Exhaust Indicator Light.................................3-41Brake (cont.)
Hydraulic Systems......................................... 4-7
System Warning Light..................................3-33
Trailer Hand Control Valve............................4-10
Brakes..........................................................5-49
Air .............................................................2-42
Hydraulic....................................................2-40
Propshaft Brake Burnish Procedure................2-41
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-11
Bucket Seats................................................... 1-2
Bulb Replacement...........................................5-68
C
California Proposition 65 Warning....................... 5-3
Canadian Owners................................................ ii
Capacities and Specifications............................5-99
Carbon Monoxide...................................2-45, 4-27
Care of
Safety Belts................................................5-86
Your Cassette Tape Player............................3-65
Your CD Player...........................................3-67
Your CDs ...................................................3-66
Center Console Storage Area...........................2-49
Center Passenger Position, Safety Belts.............1-24
Charging System Light....................................3-31
2
Engine
Air Cleaner/Filter.........................................5-35
Alarm and Automatic Shutdown.....................2-20
Battery.......................................................5-58
Change Engine Oil Light...............................3-40
Check and Service Engine Soon Light............3-38
Checks Before Operating..............................2-24
Coolant..............................................5-38, 5-40
Coolant Heater............................................2-26
Coolant Temperature Gage...........................3-36
Diesel Engine Exhaust Brake........................2-27
Exhaust.....................................................2-45
Exhaust Restrictor.......................................2-22
Fan Breakage............................................... 5-5
Fan Noise..................................................5-47
High Idle System.........................................2-21
Oil .....................................................5-24, 5-28
Oil Life System...........................5-31, 5-33, 5-34
Overheating................................................5-40
Overspeed Warning Light..............................3-40
Reduced Power Light...................................3-42
Shutdown Warning Light...............................3-40
Speed Limiter.............................................3-28
Starter Over-Crank Protection........................2-12
Starting Your Diesel.....................................2-15
Starting Your Gasoline..................................2-13Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................. 7-6
Exhaust Brake Indicator Light...........................3-41
Exhaust Restrictor...........................................2-22
Extender, Safety Belt.......................................1-28
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-35
Filter Minder Gage..........................................3-46
Finish Damage...............................................5-89
Fixed Mast Antenna........................................3-67
Flashers, Hazard Warning.................................. 3-6
Flat Tire........................................................5-82
Fluid
Automatic Transmission................................5-36
Manual Transmission....................................5-37
Power Steering...........................................5-47
Windshield Washer......................................5-48
Four-Wheel Drive....................................2-35, 5-65
Front Axle......................................................5-66
Front Wheel Bearings with Oil-Filled Hubs..........5-73
5
Fuel............................................................... 5-6
Additives...................................................... 5-6
Diesel Engine Fuel........................................ 5-7
Filling a Portable Fuel Container....................5-21
Filling Your Tank..........................................5-20
Filter..........................................................5-70
Filter Replacement.......................................5-18
Fuels in Foreign Countries............................5-19
Gage .........................................................3-45
Gasoline Octane........................................... 5-6
Gasoline Specifications.................................. 5-6
Primary Filter and Water Separator................5-71
Running Out of Fuel....................................5-17
Secondary Filter and Water Separator/Heater....5-71
Very Cold Weather Operation........................5-10
Water in Fuel..............................................5-10
Water in Warning Light.................................3-46
What Fuel to Use.......................................... 5-8
Fuses
Fuses and Circuit Breakers...........................5-93
Instrument Panel Fuse Block.........................5-94
Underhood Fuse Block.................................5-96
Windshield Wiper.........................................5-93G
Gage
Air Pressure...............................................3-47
Check Gages Warning Light..........................3-44
Engine Coolant Temperature.........................3-36
Filter Minder...............................................3-46
Fuel..........................................................3-45
Hourmeter..................................................3-47
Oil Pressure...............................................3-38
Speedometer..............................................3-27
Tachometer.................................................3-27
Transmission Temperature.............................3-41
Voltmeter Gage...........................................3-32
Gasoline
Octane........................................................ 5-6
Specifications............................................... 5-6
Gasoline Engine, Starting.................................2-13
GM Mobility Reimbursement Program.................. 7-5
6
L
Lamps
Dome ........................................................3-16
Exterior......................................................3-14
Marker.......................................................3-16
Reading.....................................................3-17
LATCH System
Child Restraints...........................................1-41
Light
Airbag Off..................................................3-30
Airbag Readiness........................................3-29
Anti-Lock Brake System Warning...................3-35
Brake System Warning.................................3-33
Change Engine Oil......................................3-40
Charging System.........................................3-31
Check Gages Warning.................................3-44
Daytime Running Lamps Indicator..................3-43
Differential Lock Indicator..............................3-42
Engine Overspeed Warning...........................3-40
Engine Shutdown Warning............................3-40
Exhaust Brake Indicator................................3-41
Highbeam On.............................................3-43
Low Coolant Warning...................................3-37
Low Oil Level.............................................3-39
Low Washer Fluid Warning...........................3-44
Malfunction Indicator....................................3-38Light (cont.)
Range Inhibit Warning Indicator.....................3-33
Reduced Engine Power................................3-42
Safety Belt Reminder...................................3-28
Safety Belt Reminder Tone...........................3-28
Service Transmission Warning.......................3-32
Trailer Anti-Lock Brake System Warning..........3-36
Wait to Start Indicator..................................3-37
Water in Fuel Warning.................................3-46
Lighting
Entry.........................................................3-17
Loading Your Vehicle.......................................4-34
Locks
Door ........................................................... 2-6
Power Door.................................................. 2-7
Loss of Control...............................................4-17
Low Coolant Warning Light..............................3-37
Low Washer Fluid Warning Light.......................3-44
M
Maintenance, Normal Replacement Parts..........5-104
Maintenance Schedule
At Each Fuel Fill.........................................6-28
At Least Once a Year..................................6-32
At Least Twice a Year..................................6-29
8
Maintenance Schedule (cont.)
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-28
PartC-Recommended Fluids and
Lubricants...............................................6-33
PartD-Maintenance Record........................6-35
Scheduled Maintenance................................. 6-5
Scheduled Maintenance Supplements............... 6-4
Using.......................................................... 6-4
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-38
Manual Transmission
Fluid..........................................................5-37
Operation...................................................2-31
Manual Windows.............................................. 2-9
Marker Lamps................................................3-16
Mirrors
Manual Rearview Mirror................................2-47
Outside Convex Mirrors................................2-48
Outside Heated Mirrors................................2-48
Outside Manual Mirrors................................2-47
Outside Power Mirrors..................................2-47N
New Vehicle Break-In......................................2-11
Noise Control System, Tampering......................5-67
Normal Maintenance Replacement Parts...........5-104
O
Odometer......................................................3-27
Odometer, Trip...............................................3-27
Off-Road Recovery..........................................4-15
Oil
Change Engine Oil Light...............................3-40
Engine...............................................5-24, 5-28
Low Oil Level Light......................................3-39
Pressure Gage............................................3-38
Oil, Engine Oil Life System..............5-31, 5-33, 5-34
Older Children, Restraints................................1-28
Other Service Items
Air Conditioning System...............................5-74
Automatic Ether Injection System...................5-72
Front Wheel Bearings with Oil-Filled Hubs.......5-73
Fuel Filter...................................................5-70
Primary Fuel Filter and Water Separator.........5-71
Secondary Fuel Filter and Water
Separator/Heater......................................5-71
9
Securing a Child Restraint
Center Rear Seat Position (Crew Cab)
or Center Front Position............................1-44
Rear Outside Seat Position...........................1-42
Right Front Seat Position..............................1-46
Service........................................................... 5-3
California Proposition 65 Warning.................... 5-3
Doing Your Own Work................................... 5-4
Engine Fan Breakage.................................... 5-5
Engine Soon Light.......................................3-38
Publications Ordering Information...................7-11
Transmission Warning Light..........................3-32
Servicing Your Airbag-Equipped Vehicle..............1-61
Setting the Time.............................................3-49
Sheet Metal Damage.......................................5-89
Shoulder Belt Height Adjuster...........................1-22
Signals, Turn and Lane-Change.......................... 3-8
Sliding Rear Windows.....................................2-10
Snow Plow....................................................4-36
Specifications, Capacities.................................5-99
Speedometer..................................................3-27
Split Bench Seat.............................................. 1-6
Starting Your Diesel Engine..............................2-15
Starting Your Gasoline Engine..........................2-13
Steering........................................................4-13
Steering Wheel, Tilt Wheel................................. 3-7Storage Areas................................................2-49
Center Console Storage Area........................2-49
Stuck in Sand, Mud, Ice, or Snow.....................4-32
Sun Visors.....................................................2-10
Suspension, Air..............................................2-44
Switchbanks, Instrument Panel..........................3-18
T
Tachometer....................................................3-27
Theft-Deterrent, Radio.....................................3-64
Tilt Wheel........................................................ 3-7
Tires.............................................................5-74
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................5-89
Cleaning....................................................5-89
Dual Tire Operation.....................................5-76
If a Tire Goes Flat.......................................5-82
Inflation - Tire Pressure................................5-75
Tightening the Wheel Nuts............................5-77
Wheel Alignment and Tire Balance.................5-77
Wheel Loading............................................5-75
Wheel Replacement.....................................5-81
When It Is Time for New Tires......................5-76
Tow Hooks.....................................................4-33
12