
Part B: Owner Checks and Services 
Listed  below  are  owner  checks  and services  which should be performed  at 
the intervals  specified to help  ensure the safety, dependability  and emission 
control  performance  of your vehicle. 
Be  sure any necessary  repairs are completed  at once.  Whenever  any fluids 
or  lubricants  are added  to your  vehicle,  make  sure they  are the proper  ones, 
as shown in Part D. 
At the  First 100, 1,000 and 6,000 Miles (160, I 600 and 
IO 000 km) 
For vehicles with dual wheels, check dual  wheel nut torque. For proper 
torque,  see  “Wheel 
Nut Torque’’  in  the  Index. 
At Each  Fuel  Fill 
Engine Oil Level 
Check the  engine oil level and add the proper oil if necessary.  See “Engine 
Oil” 
in the Index  for  further  details. 
Engine Coolant  Level 
Check the engine  coolant  level and add  the proper coolant mix if necessary. 
See  ”Coolant” 
in the Index for  further  details. 
Windshield  Washer  Fluid  Level 
Check the windshield  washer fluid level in the windshield  washer tank  and 
add the proper fluid  if necessary.  See ”Windshield Washer  Fluid” in  the 
Index  for  further  details. 
At Least Once a Month 
Tire  Inflation 
Check tire  inflation. Make  sure tires  are inflated to the pressures  specified 
on the Certification/Tire  label which is located on the rear  edge  of the 
driver’s  door  or on the incomplete  vehicle document in the cab.  See  “Tires” 
in the  Index  for  further  details. 
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Cassette Deck 
Clean  cassette  deck.  Cleaning  should be done  every 50 hours  of tape  play. 
See  “Audio  Systems” 
in the  Index for further  details. 
At Least Once a Year 
Key Lock Cylinders 
Lubricate the key lock  cylinders with the lubricant specified in Part D. 
Body Lubrication 
Lubricate  all fuel  doors,  body hood  and body door hinges, tailgate and 
tailgate  handle pivot  points, latches,  locks, and folding  seat hardware. Part 
D tells you what to use. More  frequent lubrication  may  be required  when 
exposed  to 
a corrosive  environment. 
Starter Switch 
A CAUTION: 
When  you are doing  this  check, the vehicle  could  move  suddenly. 
If it does, you or  others  could  be  injured.  Follow the steps below. 
1.  Before  you start,  be sure you have enough room around the vehicle. It 
should  be parked 
on a level  surface. 
2. Firmly apply  both the parking brake  (see “Parking Brake”  in  the Index 
if  necessary)  and the regular brake. 
NOTE: Do not use the accelerator pedal,  and  be ready to  turn  off the 
engine  immediately 
if it starts. 
3. On  automatic  transmission  vehicles,  try  to start the  engine in each gear. 
The  starter should work only 
in PARK (P) or NEUTRAL (N). If the 
starter  works in  any  other position, your vehicle needs  service. 
On manual transmission vehicles, put the shift lever  in NEUTRAL 
(N), 
push the clutch down halfway  and  try to start  the engine. The  starter 
should work only when  the clutch is pushed down 
all the  way  to  the 
floor.  If the  starter  works when the clutch isn’t pushed all the  way 
down,  your vehicle needs service. 
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USAGE 
Column Shift Lever  and Propeller 
Shaft 
Windshield  Washer Solvent 
Propeller  Shaft  Spline/Universal 
Joint 
Hood  Latch  Assembly 
a.  Pivots  and Spring  Anchor 
b.  Release  Pawl 
Hood  and Door Hinges 
Body  Door Hinge  Pins, Tailgate 
Hinge  and  Linkage,  Folding Seat, 
Fuel 
Door Hinge 
Outer  Tailgate Handle Pivot Points 
Weatherstrip  Conditioning 
Weatherstrip  Squeaks 
Gas  Line 
FLUIDLUBRICANT 
Chassis  lubricant meeting require- 
ments 
of NLGI  Grade 2, Category 
LB 
or GC-LB (GM Part No. 
12346003). 
GM  Optikleen’  Washer  Solvent 
(GM  Part 
No. 105 1 5 1 5) or  equiva- 
lent. 
Chassis  lubricant (GM Part 
No. 
12346003  or equivalent)  or lubri- 
cant meeting requirements 
of NLGI 
Grade  2,  Category LB  or GC-LB. 
a. Engine  oil. 
b. Chassis lubricant  (GM Part No. 
12346003  or  equivalent)  or  lubri- 
cant  meeting requirements 
of NLGI 
Grade  2,  Category  LB or GC-LB. 
Engine  oil or Lubriplate  Lubricant 
(GM Part 
No. 1050109). 
Engine  Oil. 
Multi-Purpose  Lubricant  (GM Part 
No.  12345  120 or equivalent). 
Dielectric  Silicone  Grease  (GM 
Part 
No. 12345579  or equivalent). 
Spray-A-Squeek  (GM 
Part No. 
1 05 2277). 
Gas  Line  De-Icer (GM  Part  No. 
105 15 16). 
Part E: Maintenance  Record 
After the  scheduled  services  are  performed, record the date, odometer 
reading  and who  performed  the  service 
in the boxes provided  after the 
maintenance  interval. Any  additional information  from  “Owner  Checks  and 
Services”  or “Periodic Maintenance”  can be added  on the following record 
pages. Also, you  should retain all maintenance receipts.  Your owner 
information  portfolio 
is a convenient  place  to store them. 
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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 
Box 8880 
Ottawa,  Ontario K1 G 352. 
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-TRUCK  (1-800-462-8782),  or write: 
GMC  Truck  Consumer  Relations 
3 
1 E. Judson  Street  1607-04 
Pontiac,  MI  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 
LlH 8P7 
Roadside  Assistance 
GMC  Truck’s  Roadside  Assistance  provides stranded owners with 
over-the-phone  roadside  repairs,  location of the nearest  GMC  Truck  dealer, 
or  the  following  special services: 
Flat  Tire Change: Installation of spare  tire  will be covered  at no  charge 
(customer 
is responsible  for  repair or replacement  of tire). 
Fuel Delivery: Delivery of enough  fuel  for the customer  to  get to the 
nearest service  station (up to $4.00). 
Jump  Start: No-start  situations  which require a battery  jump start will  be 
covered  at 
no charge. 
Lock Out: Replacement  keys  or locksmith  service will be covered at no 
charge  if  you are unable  to  gain  entry  into  your  vehicle. Delivery of the 
replacement  key will be  covered  at no  charge  within a 10-mile  radius. 
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Cruise  Control  (Option) ........................................... 2-43 
OnHills 
..................................................... 2-47 
Passing  Another  Vehicle 
........................................ 2-46 
To  Erase  Speed  Memory 
........................................ 2-48 
ToGetOutOf ................................................ 2-47 
ToIncreaseSpeed 
............................................. 2-45 
ToReduceSpeed 
.............................................. 2-46 
ToResume 
.................................................. 2-45 
ToSet ...................................................... 2-44 
Customer  Assistance  for  the  Hearing or Speech  Impaired 
................. 8-3 
Customer  Assistance  Information 
.................................... 8-1 
Customer  Satisfaction  Procedure ..................................... 8-1 
Daytime  Running  Lamps  (See  “Lamps-Daytime  Running Lamps”) 
Daytime  Running Lamps  (DRL)  Indicator  Light (See  “Lights”) 
Diesel Fuel  Requirements  and Fuel  System  (See  “Fuel-Diesel”) 
Differential  (See  “Axle”)  Doors 
.......................................................... 2-3 
Locks 
........................................................ 2-5 
PowerDoorLocks 
............................................. 2-6 
SideDoors 
.................................................... 2-3 
Drive  Axle  (See 
“Axle”) 
Driving  AtNight 
.................................................... 4-23 
City 
........................................................ 4-26 
Defensive 
.................................................... 4-1 
Freeway ..................................................... 4-27 
HillandMountainRoads 
....................................... 4-29 
Highway  Hypnosis 
............................................ 4-28 
If  You’re  Caught in a  Blizzard 
................................... 4-33 
OnGrades 
................................................... 447 
SnoworIce 
.................................................. 4-31 
In  Snow  (Diesel  Engines) ....................................... 2-14 
IntheRain 
................................................... 4-24 
LossofControl 
............................................... 4-11 
Nightvision 
................................................. 4-24 
Off-Road  Driving  with  Your Four-wheel  Drive  Vehicle 
.............. 4-12 
After  Off-Road  Driving 
...................................... 4-23 
Before 
You Go Off-Roading .................................. 4-12 
Passing 
..................................................... 4-10 
Through  Deep  Standing  Water ................................... 2-14 
Winter ...................................................... 4-31 
DrunkenDriving ................................................. 4-2 
Electrical  System 
Engine  Add-on  Equipment 
........................................... 6-78 
Adding 
Coolant-Diesel  Engine .................................. 5-20 
Adding Coolant-Gasoline  Engine ........................... 5-13. 5-16 
Aircleaner .................................................. 6-26 
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Engine (continued) 
Coolant 
..................................................... 6-35 
Coolant  Heater 
...................................... 2.18.3-4.  6.21 
Coolant  Temperature  Gage  (See “Gages”) 
Control  Module  System 
........................................ 6-57 
Diesel  Heater Output 
............................................ 34 
Exhaust 
..................................................... 2-32 
FanNoise 
................................................... 5-25 
Identification 
....................................... 6-76,677,  6-81 
Oil  (See  “Oil”) 
Overheating 
.................................................. 5-10 
RunningWhileParked 
......................................... 2-32 
Starting  Your Gasoline  Engine 
................................... 2-12 
Starting  Your Diesel  Engine 
..................................... 2-14 
Exhaustsystem 
................................................. 6-56 
F 
Filter  Replacement  Chart  (See “Service-Replacement  Parts and Filter 
Recommendations”) 
FinishDamage 
.................................................. 6-74 
Fluid  Capacities  (See  “Capacities  and Specification”) 
FluidLeakCheck 
................................................ 646 
Fluids  (See  “Scheduled Maintenance  Services”) 
Fog  Lamps  (See “Lamps-Fog”) 
Four-WheelDrive 
.......................................... 2-33,  6-33 
Front Axle Locking  Feature 
..................................... 2-36 
Transfer  Case 
........................................... 2-34,  6-33 
Canadian 
...................................................... 6-5 
Diesel 
....................................................... 6-3 
FillingYourTank 
............................................. 6-11 
Fuel 
Foreign  Countries  (Gasoline  Engines) 
............................. 6-11 
Filter  Replacement  (Diesel  Engines) 
............................... 6-9 
Gage  (See  “Gages”) 
Gasoline 
..................................................... 6-2 
Gasolines  for  Cleaner  Air 
........................................ 6-3 
Running  Out of Fuel  (Diesel  Engines) 
.............................. 6-8 
Tankcapacity 
................................................ 6-83 
Water  in  Fuel  (Diesel  Engines) 
............................... 2-74, 6-5 
Fuses and  Circuit  Breakers ................................... 6-79,  6-87 
FuseBlock 
............................................. 6-80, 6-86 
G 
Gages  Engine  Coolant  Temperature Gage 
................................ 2-80 
Oil  Pressure  Gage 
............................................. 2-81 
Tamper  Resistant  Odometer ..................................... 2-69 
Trip  Odometer 
................................................ 2-69 
FuelGage 
................................................... 2-79 
Speedometer 
................................................. 2-69 
Tachometer 
.................................................. 2-70 
Voltmeter 
.................................................... 2-82 
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Lamps (continued) 
Lamp  and Bulb  Data 
........................................... 6-88 
Reading 
..................................................... 2-51 
Replacement  (See “Bulb  Replacement“) 
Underhood  Reel Lamp 
......................................... 2-52 
Lights ......................................................... 2-70 
Air Bag Readiness Light 
................................... 1-20,  2-71 
Anti-.  Lock  Brake System  Warning  Light 
........................... 2-73 
Brake System  Warning Light 
.................................... 2-72 
Charging  System  Warning Light 
.................................. 2-76 
Daytime  Running  Lamps (DRL) Indicator Light 
................ 2-50,  2-77 
Check 
Gages Light 
............................................ 2-77 
Glow  Plugs Light 
............................................. 2-75 
Headlamp  High Beam Indicator Light 
............................. 2-78 
Headlights  (See  “Headlamps”)  Low Coolant  Warning Light 
................................ 2-75,  6-38 
Malfunction  Indicator 
..................................... 2-76,  6-57 
Safety  Belt Reminder  Light 
..................................... 2-71 
Service  Throttle  Soon 
.......................................... 2-74 
ShiftLight 
.............................................. 2-25, 2-78 
Turn Signal  and Lane Change  Indicator Light .................. 240,  2-79 
Water 
in Fuel  (Diesel  Engine) .................................... 2-74 
Loading  Your  Vehicle 
............................................ 4-37 
Trailering  Package 
............................................ 4-39 
Truck-Camper  Loading 
........................................ 4-39 
Lock  Cylinders  (See “Key Lock Cylinders“) 
Loss of  Control  (See “Driving-Loss 
of Control”) 
Lubrication  (See  “Recommended Fluids and Lubricants“) 
M 
Malfunction  Indicator  Lamp  (See “Lights”) 
Maintenance  (See “Scheduled  Maintenance  Services”) 
Master  Cylinder  (See  “Brakes”) 
Mirrors  Convexoutside 
............................................... 2-56 
Electric  Outside  Rearview  Mirrors 
................................ 2-56 
Electrochromic  Inside  Rearview  Mirror 
............................ 2-54 
Inside 
....................................................... 2-53 
Outside 
..................................................... 2-56 
ModelReference 
.................................................. iv 
Multifunction  Lever .............................................. 2-39 
N 
Noise  Control  System ............................................ 6-14 
0 
Odometer  (See “Gages“) 
Off-Road  Driving (See  ”Driving-Off  Road  Driving”) 
Off-Road  Recovery 
............................................... 4-9 
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