Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
Engine Oil
(Gasoline
Engine)
Engine Coolant
~~
Hydraulic Brake
System
FLUIDLUBRICANT
Engine Oil with the American
Petroleum Institute Certified For
Gasoline Engines “Starburst”
symbol of the proper viscosity. To
determine the preferred viscosity
for your vehicle’s engine, see
“Engine Oil” in the Index.
50/50 mixture of clean water
(preferably distilled) and use only
GM Goodwrench@ DEX-COOL@
or Havoline@ DEX-COOL@
Coolant. See “Engine Coolant” in
the Index.
Delco Supreme
11 @ Brake Fluid
(GM Part
No. 12377967 or
equivalent
DOT-3 Brake Fluid).
USAGE
Hydraulic Clutch
System
Parking Brake
Cable Guides
~
Power Steering System
Manual
Transmission (5-Speed with
Low Gear, RPO
MW3)
Manual
Transmission (5-Speed without
Low Gear,
RPO
MG5)
FLUID/LUBRICANT
Hydraulic Clutch Fluid (GM Part
No. 12345347 or equivalent
DOT-3 Brake Fluid).
Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of
NLGI # 2, Category LB or
GC-LB.
GM Power Steering Fluid (GM
Part
No. 1052884 - 1 pint,
1050017
- 1 quart, or equivalent).
GM Goodwrench Synthetic
Manual Transmission Gear Oil
(GM Part No. 12346190
- 1 st.) or
equivalent
SAE 75W-90 GL-4
Gear Oil.
Synchromesh Transmission Fluid (GM Part
No. 12345349 or
equivalent).
7-46
ProCarManuals.com
1998 GMC SERVICE PUBLICATIONS ORDERING INFORMATION
The following publications covering the operation and servicing of your vehicle can be purchased by filling o
the Service Publication Order Form in this book and mailing it in with your check, money order,
or credit card information to Helm, Incorporated (address below.)
CURRENT PUBLICATIONS FOR 1998 GMC
SERVICE MANUALS
Service Manuals have the diagnosis and repair information
on engines, transmission, axle, suspension, brakes,
electrical, steering, body, etc.
RETAIL SELL PRICE:
$90.00
TRANSMISSION, TRANSAXLE, TRANSFER CASE
UNIT REPAIR MANUAL
This manual provides information on unit repair service
procedures, adjustments and specifications for the
1998 GM transmissions, transaxles and transfer cases.
RETAIL SELL PRICE:
$40.00
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.
PLEASE COMPLETE THE ORDER FORM SHOWN ON
THE FOLLOWING PAGE AND MAIL TO:
Helm, Incorporated P.O. Box 07130 Detroit, MI 48207
OWNER’S INFORMATION
Owner publications are written directly for Owners and
intended to provide basic operational information about
tl
vehicle. The owner’s manual will include the Maintenanci
Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner’s Manual and
Warranty Booklet.
RETAIL
SELL PRICE: $1 5.00
Without Portfolio: Owner’s Manual only.
RETAIL SELL PRICE:
$1 0.00
CURRENT & PAST MODEL ORDER FORMS
Service Publications are available for current and past
model GM vehicles.
To request an order form, please
specify year and model name of the vehicle.
OR ORDER TOLL FREE: 1-800-782-4356
Monday-Friday 8:OO AM - 6:OO PM Eastern Time
For Credit Card Orders Only
(VISA-Mastercard-Discove
ProCarManuals.com
Tachometer .................................. 2-63
Voltmeter
................................... 2-67
Garage Door Opener
............................ 2-5 1
GAWR ....................................... 4-43
Gear Positions. Automatic Transmission
............. 2- 15
Gear Positions. Manual Transmission .......... 2- I8 . 2- 19
GloveBox .................................... 2-51
Gross Axle Weight Rating ........................ 4-43
Gross Vehicle Weight Rating
...................... 4-43
Guide en Franpis
11
GVWR ....................................... 4-43
.. .................................
Halogen Bulbs ................................ 6-39
Hazard Warning Flashers
.......................... 5-2
Head Restraints ................................. 1-5
Headlamps .................................... 2-41
Bulb Replacement
....................... 6-40. 6.4 I
High/Low Beam Changer ...................... 2-36
On Reminder
................................ 2-42
Wiring
..................................... 6-71
Heating
........................................ 3-5
High-Beam Headlamps
.......................... 2-36
Hill and Mountain Roads
......................... 4-34
Hitches. Trailer
................................. 4-55
Hood
Checking Things Under ......................... 6-9
Release
..................................... 6-10
Horn ......................................... 2-34
Hydraulic Clutch Fluid
...................... 6-25 . 7-46
Hydraulic Clutch System Check
................... 7-41
Hydroplaning
.................................. 4-30
Hearing Ilnpaired
. Customer Assistance .............. 8-4
Highway Hypnosis
.............................. 4-33 Ignition
Positions
..............................
Brakesystem ................................ 7-45
Drive Axle
.................................. 7-45
Engine Cooling System
........................ 7-44
Exhaust
Systems ............................. 7-44
Steering
.................................... 7-44
Suspension
.................................. 7-44
Throttle Linkage
.............................. 7-44
Transfer Case (Four-Wheel Drive)
............... 7-45
Instrument Panel
............................... 2-60
Cleaning
.................................... 6-64
Cluster
..................................... 2-62
FuseBlock
.................................. 6-72
Intensity Control
............................. 2-43
Interior Lamps
................................. 2-43
.................................... J ack. Tire 5-25
Jump Starting
................................... 5-3
Key Lock Cylinders Service
..................... 7-41
Key Release Button
............................. 2-12
Keyless Entry System ............................ 2-6
Keys
.......................................... 2-2
9-5
ProCarManuals.com
Manual Transmission Check
...................................... 7-41
Fluid
.................................. 6.24, 7.46
Shifting
................................ 2- 18. 2. I9
Starting Your Engine .......................... 2- 13
Manualwindows
............................... 2-32
Memo Pad Holder
......................... 2.55. 2.57
Methanol
...................................... 6- 5
Mirrors ....................................... 2-45
CamperType
................................ 2-48
Convex Outside
.............................. 2-50
Electrochromic Daymight Rearview
.............. 2-46
Inside Daymight Rearview
..................... 2-45
Manual
..................................... 2-48
Power Remote Control
......................... 2-50
WestCoastType
.............................. 2-50
MMT
......................................... 6-4
Model Reference
................................. vi
MountainRoads ................................ 4-34
New Vehicle Break-In
.......................... 2- 10
Nightvision ................................... 4-27
Noise Control System ........................... 6- 13
Normal Maintenance. Normal Replacement Parts
...... 6-78
Odometer
.................................... 2-63
Odometer. Trip
................................. 2-63
Off-Road Driving
.............................. 4- I4
Off-Road Recovery
............................. 4- I I
Oil. Engine ............................... 6-14. 7-46
Opener. Garage Door
............................ 2-51
Overheating Engine ............................. 5- 13 Owner Checks
and Services
....................... 7-40
Owner Publications. Ordering
................ 8- 1 1. 8- 12
Paint Spotting. Chemical
........................ 6-68
Park. Shifting Into
.............................. 2-26
Park. Shifting Out of
............................ 2-29
Parking
AtNight
..................................... 2-9
Brake
...................................... 2-25
Brake Mechanism Check
....................... 7-43
Over Things That Burn
........................ 2-30
With a Trailer ................................ 4-58
Your Vehicle. Manual Transmission
.............. 2-29
Passenger Position
.............................. 1-23
Lots
........................................ 2-9
Passin;
@ ..................................... 4-11
Passlock
................................ 2- 10, 2-73
Periodic Maintenance Inspections
.................. 7-44
Pickup Box Identification Lamp Bulb Replacement
.... 6-47
Pickup Conversion to Chassis Cab
................. 4-48
Power
Accessory Outlet
............................. 2-59
DoorLocks
................................... 2-6
Driver’sSeat ................................. 1-3
Option Fuses
................................ 6-71
Remote Control Mirror
........................ 2-50
Steering ..................................... 4-8
Steering Fluid ........................... 6-33, 7-46
Take-Off .................................... 4-61
Winches
.................................... 4-61
Windows
................................... 2-32
ProCarManuals.com
Steering ....................................... 4-8
In Emergencies ............................... 4- 10
Power ....................................... 4-8
Speed Sensitive
............................... 4-9
Tips
......................................... 4-9
Wheel’Tilt
.................................. 2-34
Step-Bumper Pad
............................... 4-63
Storage Areas
.................................. 2-5 1
Storage. Overhead .............................. 2-5 1
Storage. Vehicle ................................ 6-39
Stuck: In Sand. Mud. Ice or Snow
.................. 5-36
Sunvisors
.................................... 2-59
Sunglasses Storage
.............................. 2-53
Symbols. Vehicle
.................................. v
Tachometer .................................. 2-63
Tailgate Removal
................................ 2-3
Taillamp Bulb Replacement
.................. 6-48’6-49
Tape Player Care
............................... 3-25
Temperature Control. Climate Control System
..... 3-2. 3-3
Theft
.......................................... 2-9
Theft-Deterrent Feature .......................... 3-2 1
THEFTLOCK” ................................ 3-21
Thermostat
.................................... 6-32
Third Door
..................................... 2-4
Tilt Steering Wheel
............................. 2-34
Time. Setting the
................................ 3-7
Tire Chains
.................................... 6-60
TireLoading
................................... 4-43 Tires
......................................... 6-51
Alignment and Balance
........................ 6-59
BuyingNew
................................. 6-56
Chains
..................................... 6-60
Changing
a Flat .............................. 5-23
Cleaning
.................................... 6-67
Dual Operation
............................... 6-56
Inflation
.................................... 6-52
Inflation Check
............................... 7-40
Inspection and Rotation
........................ 6-53
Loading
.................................... 4-43
Pressure
.................................... 6-52
Temperature
................................. 6-58
Traction
.................................... 6-58
Treadwear
................................... 6-58
Uniform Quality Grading
....................... 6-57
Wear Indicators
.............................. 6-55
Wheel Replacement
........................... 6-59
When It’s Time for New
....................... 6-55
TopStrap
..................................... 1-50
TorqueLock ................................... 2-28
Torque, Wheel
Nut ......................... 5-32, 6-77
Towing
a Trailer ................................ 4-49
Towing, Recreational Vehicle
..................... 4-41
Towing Your Vehicle
............................. 5-8
Trailer Brakes
..................................... 4-56
Driving on Grades
............................ 4-58
Driving with
................................. 4-56
9-10
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