Section 6 Service  and  Appearance  Care 
Here you will find information  about the care  of your vehicle.  This section begins  with service  and fuel information, 
and then  it shows  how to check  important  fluid  and lubricant levels. There  is also technical information  about your 
vehicle, and 
a part  devoted to its appearance  care. 
6-2 
6-3 
6-5 
6-6 
6- 8 
6-9 
6-  13 
6- 14 
6-18 
6-2 
I 
6-24 
6-  25 
6-26 
6-26 
6-28  6-32 
6-32  Service 
Fuel  (Gasoline  Engine) 
Fuels 
in Foreign  Countries  (Gasoline  Engines) 
Filling  Your Tank  (Gasoline  Engine) 
Filling  a Portable Fuel  Container 
Checking Things  Under the Hood 
Noise Control System 
Engine  Oil (Gasoline  Engine) 
Air  Cleaner  Filter  (Gasoline  Engine) 
Automatic Transmission Fluid 
Manual Transmission Fluid 
Hydraulic Clutch 
Rear Axle 
Four-wheel  Drive 
Engine Coolant  Radiator Pressure  Cap  (Gasoline  Engine) 
Thermostat 
, 6-33 
6-3 3 
6-35 
6-39 
6-39 
6-50 
6-5 
1 
6-6 1 
6-62 
6-65 6-69 
6-70 
6-70 
' 6-76 
6-77  6-79  Power 
Steering  Fluid 
Windshield  Washer  Fluid 
Brakes 
Battery 
Bulb Replacement 
Windshield Wiper Blade Replacement 
Tires 
Appearance  Care 
Cleaning the Inside 
of Your  Vehicle 
Cleaning the Outside  of  Your  Vehicle 
Appearance Care Materials  Chart 
Vehicle  Identification Number  (VIN) 
Electrical  System  Replacement 
Bulbs 
Capacities  and Specifications 
Air  Conditioning  Refrigerants 
6-1 
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 
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