
Fuel  Requirements 
NOTICE: 
Diesel fuel  or  fuel  additives  not  recommended  in  this  manual 
could  damage  your  fuel  system  and  engine.  Your warranty 
wouldn’t  cover  this  damage.  And: 
Diesel  fuel  that  has  been  mixed  with  engine  oil could  damage 
your  engine  and  emission  controls.  Always  check  with  your 
service  station  operator  to  make  sure  his  diesel  fuel  has  not \
been  mixed  with  engine  oil. 
If you  ever  run  out of diesel  fuel,  it  can  be  difficult  to  restart 
your  engine.  “Running  Out  of Fuel,”  later  in this  section,  tells 
you  how  to  get  it  started  again. 
To avoid all this, try  never  to 
let  your  tank  get  empty. 
What Fuel  to Use 
For  best results,  use Number 2-D diesel fuel  year-round  (above and below 
freezing  conditionsj  as  oil companies  blend Number 
2-D fuel to address 
climate  differences. Number 
1-D diesel fuel  may  be  used in very cold 
temperatures  (when 
it stays  below 0°F or -18°C);  however, it will produce 
a power and fuel economy loss. The  use of Number I-D diesel fuel in warm 
or hot  climates  may result in stalling, poor  starting  when the engine  is hot 
and 
may damage  the fuel injection system. 
Diesel  fuel may  foam when  you 
fill your tank.  This  can cause the  automatic 
pump  nozzle to shut  off, even though your tank isn’t 
full. If this happens, 
just  wait  for the  foaming  to stop  and then  continue  to 
fill your tank. 
A CAUTION: 
Heat  coming  from  the  engine  may  cause  the  fuel  to  expand  and \
force  the  fuel  out  of your  tank. 
If something  ignites  the  fuel, a 
fire could  start  and  people  could  be  burned. To help  avoid  this, 
fill  your  fuel  tank  only  until  the  automatic  nozzle shuts 
off. 
Don’t try  to  “top  it off.” 
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NOTICE: 
Use  only  engine  oil  with  the  American  Petroleum  Institute 
Certified  For  Gasoline  Engines  “Starburst”  symbol.  Failure  \
to 
use  the  proper  oil  can  result  in  engine  damage  not  covered 
by 
your  warranty. 
GM Goodwrench@ oil (in Canada, GM Engine  Oil) meets  all the 
requirements  for your vehicle. 
Engine  Oil  Additives 
Don’t add anything to your oil. Your  GM dealer is ready  to advise if you 
think  something  should be added. 
When to Change  Engine  Oil 
See if any one of these  is true for you: 
Most trips are  less  than 5 to 10 miles (8 to 16 km). This  is particularly 
important  when outside  temperatures  are below freezing. 
Most  trips include  extensive idling (such as frequent driving in stop and 
go traffic). 
Most  trips are through dusty areas. 
You operate  your vehicle in dusty areas or off-road  frequently. 
You frequently tow a trailer. 
If  any  one 
of these  is true  for your vehicle, then  you  need to change your oil 
and  filter  every 
3,000 miles (5 000 km) or 3 months - whichever  comes 
first. 
Light  Duty  Emissions: 
If none  of them is true,  change  the oil and  filter every 7,500 miles  (12 500 
km) or 12 months - whichever  comes  first. 
Heavy Duty  Emissions: 
If none of them is true,  change  the oil and filter  every  6,000  miles (10 000 
km) or 12 months - whichever  comes first. 
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This doughnut-shaped  logo  (symbol) is  used on most oil containers  to help 
you select the correct  oil. 
You  should  look for  this 
on the oil container, and  use only those oils that 
display the  logo. 
GM  Goodwrench‘  oil (in  Canada,  GM  Engine Oil) meets all the 
requirements  for  your vehicle. 
Engine  Oil Additives 
Don’t  add anything  to  your oil. Your  GM dealer  is ready to  advise if you 
think  something  should be added. 
When  to Change  Engine  Oil 
See if any  one  of these  is true  for you: 
0 Most  trips are less than 5 to IO miles (8 to 16 km).  This  is particularly 
important  when outside  temperatures  are  below freezing. 
0 Most trips include  extensive  idling (such as frequent  driving in stop  and 
e 00 traffic). 
0 You operate  your  vehicle in dusty areas  or  off-road  frequently. 
0 You frequently  tow a trailer or use a carrier  on top  of your vehicle. 
If any  of these  is true  for your  vehicle,  then you  need to change  your  oil  and 
filter  every 
2,500 miles (4 000 km) or 3 months - whichever  comes first. 
If  none  of them  is true,  change  the oil and filter  every 
5,000 miles (8 000 
km) or 12 months - whichever  comes  first. 
What to Do with Used Oil 
Did  you  know  that used  engine oil contains  certain elements  that may  be 
unhealthy  for your skin and  could even cause  cancer?  Don‘t let  used  oil stay 
on  your  skin  for very  long.  Clean  your skin and nails  with soap  and water, 
or 
a good  hand cleaner.  Wash or properly throw  away  clothing  or rags 
containing  used engine  oil.  (See the manufacturer’s  warnings  about the use 
and  disposal 
of oil products.) 
Used  oil  can be a real  threat 
to the environment. If you  change  your own oil, 
be  sure 
to drain  all free-flowing  oil from the  filter before  disposal.  Don’t 
ever  dispose  of  oil  by putting  it 
in the trash, pouring it on the ground, into 
sewers,  or into  streams  or bodies  of water.  Instead,  recycle 
it by taking it to 
a  place that  collects used oil. If you  have  a problem properly  disposing of 
your  used  oil, ask your  dealer,  a service station  or  a local recycling  center 
for  help. 
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Oil DieselEngines 
............................................... 6-21 
Additives 
................................................. 6-25 
Pressure  Gage  (See  “Gages” 
j 
ToCheck ................................................. 6-22 
WhatKindtoUse 
.......................................... 6-23 
WhentoAdd 
.............................................. 6-22 
WhentoChange 
............................................ 6-25 
What  to  Do  with  Used  Oil 
.................................... 6-25 
Gasoline  Engines 
............................................. 6-16 
Additives 
................................................. 6-20 
Pressure  Gage  (See  “Gages”) 
ToCheck 
................................................. 6-16 
WhatKindtoUse 
.......................................... 6-17 
WhentoAdd .............................................. 6-17 
When to Change ............................................ 6-20 
What  to  Do  with Used 
Oil .................................... 6-21 
Owner  Checks  and Services 
........................................ 7-93 
Parking  Brake  (See “Brakes-Parking”) 
On  Hills  (See “Towing-Parking  on  Hills’*j 
Over  Things  That  Burn 
........................................ 
Passing (See  “Drivin~-Passing”) 
Periodic Maintenance  Inspections  (See “Scheduled  Maintenance  Services”) 
Power 
Door  Locks  (See “Dood’j  2-31 
Steering 
...................................................... 4-7 
Steering  Fluid 
................................................ 640 
Take-Off 
.................................................... 4-35 
Winches 
..................................................... 4-34 
Radiator  Pressure  Cap 
............................................ 6-39 
Radio  (See “Audio  Systems”) 
Rear Axle  (See  ”Axle”) 
Recommended  Fluids and Lubricants  (See “Scheduled  Maintenance  Services“) 
Recovery  Hooks 
................................................. 5-40 
Replacement  Parts ............................................... 6-80 
Reporting  Safety  Defects  To The  United  States Government  (See “Safety  Defects”) 
Roadside  Assistance 
............................................... 8-5 
Rocking  Your  Vehicle ............................................ 5-39 
Rear Window  Defogger 
............................................ 3-4 
Safety  Belts ..................................................... 1-9 
Adults ...................................................... 1-12 
Center  Passenger  Position ....................................... 1-25 
Checking  Restraint  System ...................................... 1-44 
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