
Recommended Fluids & Lubricants
NOTE: Fluids and lubricants identified below by name, part number or
specification may be obtained from your
GM Dealer.
USAGE I FLUID/LUBRICANT
Engine Oil
I
GM Goodwrench Motor Oil or equivalent for API Service SG
or SGlCE of the recommended viscositv.
Engine Coolant Mixture
of water and a good quality ethylene glycol base
antifreeze conforming
to GM-6038-M (GM Part No. 1052103).
Hydraulic Clutch System Hydraulic Clutch Fluid (GM Part
No. 12345347 or equivalent).
Hydraulic Brake Systems Delco Supreme
11
@ brake fluid (GM Part No. 1052535 or
DOT-3).
Parking Brake Cables
GM Lubricant (GM Part
No. 1052182) or equivalent.
Manual Steering Gear GM Power Steering
Fluid (GM Part
No. 1050017) or
Power Steering System Chassis grease meeting requirements of
NLGl Grade 2,
Automatic Transmission DEXRONB
HE Automatic Transmission Fluid (GM Part
No.
Catagory LB or GC-LB (GM Part No. 1052497).
equivalent conforming
to GM spec 9985010.
1051
855l.
Manual Transmission:
a. 5-Speed with Low Gear
b. Standard Transmission Fluid (GM Part
No. 12345349).
b. 5-Speed without Low Gear a.
CastrolB Syntorq or equivalent (GM Part
No.
1 2346074).
Differential:
a. Standard (Saginaw) Front
b. SAE-80W-90 gear lubricant (GM Part No. 1052271). b. Locking a.
SAE-80W-90 gear lubricant (GM Part
No. 1052271).
and Rear Axle
Transfer Case Gas Line De-lcer (GM Part
No. 1051516).
Gas Line DexronB
IIE Automatic Transmission
Fluid (GM Part No.
12345881).
Weather Strips
Category LB or GC-LB (GM Part
No. 1052497).
Chassis grease meeting requirements
of NLGl
Grade 2,
Clutch Fork Ball Stud Category
LB or GC-LB (GM Part
No. 1052497).
Shift Lever, and Propeller Shaft. Chassis grease meeting requirements
of NLGl Grade 2,
Column Shift, Transfer Case Spray-A-Squeek
(GM Part
No. 1052277).
(Continued next
page^
TO391
7-25
ProCarManuals.com

Scheduled Maintenance Services
Recommended Fluids & Lubricants
Hood Latch Assembly a. Pivots and spring anchor
b. Release Pawl
Front Wheel Bearings
Propeller Shaft Spline/Universal Joint
Automatic Transmission Shift Linkage, Floor
Shift Linkage, Hood and Door Hinges, Body
Door Hinge Pins, Tailgate Hinge and Linkage,
Folding Seat, Fuel
Door Hinge
Key Lock Cylinders
Zhassis Lubrication
Windshield Washer Solvent and Anti-Freeze
Neatherstrip
Mer Tailgate Handle Pivot Points a. Engine
oil (GM Part
No. 1050109).
b. Chassis grease meeting requirements
of
GM-6031-M (GM Part No. 1052497).
Chassis grease meeting requirements
of NLGl
Grade 2, Category LB or GC-LB (GM Part
No.
1052497).
Chassis grease meeting requirements
of
GM-6031-M (GM Part No. 1052497)
Engine oil
Use regular engine oil or
a synthetic light
weight engine oil
(SAE 5W-30).
Chassis grease meeting requirements
of
GM-6031 (GM Part No. 10524971.
GM Optikleen washer solvent (GM Part
No.
1051515) or equivalent.
Silicone grease (GM Part
No. 12345579) or
equivalent.
Multi-purpose lubricant meeting requirements
of
GM Part No. 12345120.
TO392
7-26
ProCarManuals.com

To contact NHTSA, you may either call the Auto Safety Hotline tol\
l-free at
1-800-424-9393
(or 366-0123 in the Washington, D.C. area) or write to:
NHTSA, U.S. Department of Transportation, Washington, D.C. 20590. You can
also obtain other information about motor vehicle safety from t\
he Hotline.
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 write to: Transport Canada at
Box 8880, Ottawa, Ontario K1G 3J2.
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-GMC-TR\
UCK
(1-800-462-8782),
or write: GMC Truck, Consumer Relations, 31 E. Judson
Street 1607-07, Pontiac, Michigan 48342-2230. 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 Assistance Center, 1908 Colonel Sam
Drive, Oshawa, Ontario L1H 8P7.
Roadside Assistance
GMC Truck's Roadside Assistance provides stranded owners with
over-the-phone roadside repairs
or towing service for disabled vehicles. This
service combines the efforts of technically trained telephone representatives
with a network of GMC Truck's dealer services.
Just dial GMC Truck Roadside Assistance at 1-800-GMC-TRUCK
(1 -800-462-8782)
to reach a qualified representative who can assist you in
repair
or arrange a tow. Other recommended services can also be arranged
for situations such as retrieving locked-in keys, changing a tire, or delivering
gasoline, at a charge
to the owner. We also provide dealer information at no
charge such as location of the nearest GMC Truck dealer and their hours
of
operation.
Roadside Assistance is available 24 hours a day, seven days a \
week, 365
days a year, including weekends and holidays. Should you have \
any
questions about Roadside assistance, call the GMC Truck Roadside
Assistance Center
or Contact your dealer.
In Canada, call 1-800-268-6800 for details on Roadside Assistance.
8-5
ProCarManuals.com

A
B
Battery ........................................... 6-54
Belts (See "Safety Belts")
Better Business Bureau Mediation 8-3
Bliizard
.......................................... 4-54
Brakes 'Adjustment
................................. 4-19
Antilock
...................................... 4-16
Fluid
........................................... . 6.49
Leak Check
............................... 6-52
Master Cylinder ........................ 6-49
Parking
....................................... 2-29
Pedal Travel
.............................. 4-19
Rear Drum
..... ; .......................... 4-19
Replacing Parts
........................ 6-50
System Warning Light .2.79, 4-18
Trailer
......................................... 4-58
Wear Indicators
........................ 4-18
Braking
....................................... .'.'4.14
In Emergencies
........................ 4-19
Break.ln, New Vehicle
; ................ 2.10
Bulb Replacement ............. 6.54, 6-98
Replacement Chart
.................. 6-98
9-1
ProCarManuals.com

C
Camper Wiring Harness .............. 2-91
Capacities/Specification Charts .. 6-95
Cassette Tape Player
Catalytic Converter
...................... 6-65
Certificationnire Label
................. 6-67
Changing
A Flat Tire ........ 5.17. 5-23
Chemical Paint Spotting
.............. 6-90
Child Restraints
Cigarette Lighter/Ashtrays
........... 2-62
Circuit Breakers (See “Fuses”)
Cleaning (See
“Audio Systems”)
(See “Safety Belts”)
Finish Care
................................ 6-88
Glass
.......................................... 6-87
Inside of Vehicle
....................... 6-85
Instrument Panel. Top
............. 6-87
Outside of Vehicle
.................... 6-88
Special Problems
...................... 6-86
Vinyl
or Leather ........................ 6-87
Wheels and Tires
..................... 6-89
Windshield
................................ 6-88
Clock
................................... 3-1 2. 3-1 5
Computer Command Control
System
..................................... 6-66
Conversion to Chassis Cab
........ 6-72
Coolant (See “Engine”)
Cooling System
............................ 5-1 1
Capacity
.................................... 6-96
Crankcase Capacity
...................... 6-96
Cruise Control
............................... 2-47
Increase Speed
......................... 2.50
On Hills ...................................... 2-51
Passing
...................................... 2-51
Resume
..................................... 2-49
Set
.............................................. 2-48
To Get Out Of
.......................... 2-52
Cup Holder
.................................... 2-65
Customer Assistance for the
Customer Satisfaction Procedure.8-2 Reduce Speed
.......................... 2-51
Hearing
or Speech Impaired .... 8-3
D
Daytime Running Lights
(Canada Only)
.................... 2.55. 2-84
Indicator Light
............... 2.55. 2-84
Diesel Fuel (See “Fuel”)
Dome Lights
................................. 2-56
Doors
............................................... 2-5
Driving Locks
............................................ 2-6
Across an Incline
..................... 4-33
After Off-Road Driving
............ 4-36
At Night
.......................... 4.36. 4-38
Backing Up
............................... 4-59
Defensive
................................... 4-10
Downhill
..................................... 4-31
Freeway
..................................... 4-43
High Beams
.............................. 4-37
Highway Hypnosis
................... 4-46
Hydroplaning
............................. 4-39
In Blizzard
................................. 4-54
In City
....................................... 4-42
In Fog. Mist and Haze
. 4.41 . 4-42
In Rain
............................ 4.38. 4-40
In Sand. Mud. Ice.
Or Snow .................................. 4-34
In Water
.................................... 4-35
Long Distance
.......................... 4-45
Loss of Control
........................ 4-24
Night Vision
.............................. 4-37
Off-Roading
............................... 4-25
On Curves
................................. 4-20
On Grades
................................. 4-60
On Hill and Mountain Roads
. 4-47
On Off-Road Hills
.................... 4-28
On Snow
or Ice .. 2.15. 4.52. 4-55
Passing
............................ 4.22. 4-59
Skidding
..................................... 4-24
Stuck in Deep Snow
..... 4.54. 5-33
Through Water
.............. 2.15. 4-35
Uphill
.......................................... 4-29
Winter
........................................ 4-52
With a Trailer
............................ 4-55
Drunken Driving
........................... 4-11
9-2
ProCarManuals.com

1 Add-on Equipment ................... 6-94
I- Electronic Heatinghir Conditioning
(See "Heating")
Adding Coolant
... 5.12, 5.14. 6-44
... Engine I
Air Cleaner ................................ 6-31
Block Heater
.......... 2.19. 3.5. 6-26
Cold Weather Starting (Diesel)
.................... 2-1 7
Coolant
....... 5.12. 5-1 4. 6.42. 6-96
Coolant Temperature Gage
...... 2-88
Diesel
................................ 6.6. 6-1 9
Crankcase
.................................. 6-96
Fan Noise
.................................. 5-1 7
Noise Control System
.............. 6-1 9
.-Identification,
............................ 6-95
Oil .(See "Oil")
Overheating
................................. 5-9
Running While Parked
............. 2-35
Equipment, Add-on
...................... 6-69
Exhaust System
................ 2.34, 6-65
Exhaust
........................... 2.34,
6-65
Starting
............................ 2.12, 2-1 5
F
Fan Noise ...................................... 5-1 7
Filter
. Replacement Chart ............ 6-99
Finish Care
............................................ 6-88
Damage
..................................... 6-90
Automatic Transmission
........... 6-33
Brake
.......................................... 6-49
Coolant
............................ 5-1 2. 6-42
Front Axle
.................................. 6- 40
Hydraulic Clutch
....................... 6-37
Leak Check
................................ 6-52
Manual Transmission
................ 6-36
Power Steering
............ 1 ............ 6-46
Radiator
....................................... 5-1 4
Fluid
9-3
Rear Axle .................................. 6-41
Recommended Fluids
.............. 7-25
. Transfer Case ............................ 6-39
Windshield Washer.
................. 6-48
Fog Lamps
.................................... 2-54 .
Four-wheel Drive ............... 2.36, 6-39
Transfer Case
................ .2-37, 6-39
Front Axle
................................. 6-40
Fuel (Diesel Engines)
..................... 6.6
Cold Weather Operation
............ 6-7
Filter Replacement
........ 6-1 1, 6.13,
6-99
Fuel Requirements
..................... 6-6
Gage
........................ ; ................. 2-87
Running Out Of
........................ 6-10
Tank Capacity
........................... 6-97
Water in Fuel
.............................. 627
Fuel (Gasoline Engines)
................. 6-4
Filling Your Ta'nk
....................... 6-16
Foreign
. Countries ..................... 6-15
Gage
.......................................... 2-87
Gasolines for Cleaner Air
......... 6-5 A-
Fuses and Circuit
Breakers
............................ 6-64, 6-1 01 * .
Fuse Block ................................ 6-65 . . f
Headlights .................... 6.64, 6-100
Power Windows and Other
Trailer Wiring Harness
.. 6.64, 6-1 00
. Windshield Wipers ...... 6-64, 6-100
G
Gages ............................................ 2.87
Coolant Temperature Gage
..... 2-88
Fuel Gage
.................................. 2-87
Odometer
................................... 2-76
Oil Pressure Gage
..................... 2-89
Speedometer.
............................ 2-76
Tachometer
..................... 2.76, 2-78
Trip Odameter 2-77
Voltmeter
................................... 2-90
-
-.
I
Power Options ......... 6.64, 6-100 :
. ...........................
...
ProCarManuals.com

Towing
A Trailer ...................................... 4-55
Maintenance
.............................. 4-61
Recommendations
................... 6-72
Turn Signals
.............................. 4-59
Traffic Lights
................................... 4-8
Trailer Brakes
.............................. 4-58
Trailering Package
........................ 6-69
Transfer Case
..................... 2.37. 6-39
Transmission
Automatic
.................................. 2-2 1
Five-Speed Manual ........ 2.24. 2-25
Fluid
................................ 6.33. 6-36
Fluid. To Add
................. 6.35. 6-37
Four-wheel
Manual Shift Speeds
............... 2-28
Shift Light
.................................. 2-27
Torque Lock (Automatic Transmission)
............. 2.30. 4-51
Trip Odometer
............................... 2-77
Turn SignaVMuItifunction Lever
.. 2.42
Indicator
...................... 2.43. 2-86
Following Distance
................... 4.59
Wiring Harness
.............. 2.91, 6-64
(See “Four-Wheel Drive”)
Turn SignaVLane Change
V
Damage Warnings ...................... 0-3
Vehicle Identification Number
............... 6-93
Loading
...................................... 4-26
Symbols
...................................... 0-4
Ventilation System
......................... 3-2
Air Vents
...................................... 3-3
Voltmeter
....................................... 2-90
Tips
............................................... 3.2
W
Warning
and Indicator Lights .... 2-78
Devices. Other
............................ 5-3
Wheels Alignment and Tire
Balance
.................................... 6-82
Aluminum
.................................. 6-89
Hub Caps and
Wheel Nut Caps
..................... 5-24
Nut Torque ..................... 6.51. 6-95
Replacement
............................. 6-83
Used Replacement
................... 6-83
Windows
........................................ 2-39
Sliding Rear
.............................. 2-40
Swing-Out
.................................. 2-40
Windshield Washer
...................... 2-46
Washer Fluid
............................ 6-48
Winter Driving
.............................. 4-52
Wipers, Windshield
........ 2-45, 6-64, 6-100
Blade Chatter
............................ 6-88
Blade Inserts
............................ 6-52
Cleaning Blades
........................ 6-88
9-7
ProCarManuals.com