1995 CHEVROLET SUBURBAN maintenance

Air Conditioning
Every now and then have your dealership check your air conditioning
system to be sure
it has not lost any cooling ability. If you think the system
is not working properly, have your dealership check it out as soon as
possible.
The air conditioning will not work when the temperature is below
40°F
(4°C).
Fluid Leak Check
After the vehicle has been parked for a while, inspect the surface under the
vehicle for water, oil, fuel or other fluids. Water dripping from the air
conditioning system after
it has been used is normal. If you notice fuel leaks
or fumes, the causes should be found and corrected at once.
Lock Cylinders
To be sure your locks operate properly, they must be lubricated. Your
vehicle’s maintenance schedule will tell
you how often to lubricate them.
See “Recommended Fluids and Lubricants”
in the Index for the proper
lubricant to use.
You should not use penetrating oils because they could wash out the factory
installed lubricant and cause the lock
to bind. De-icers which contain
alcohol could also wash away
the lubricant, so be sure to lubricate the lock
after using
a de-icer of this type.
Battery
Every new GM vehicle has a Delco Freedom’ battery. You never have to
add water
to one of these. When it’s time for a new battery, we recommend
a Delco Freedom@ battery. Get one that has the replacement number shown
on the original battery’s label.
Vehicle Storage
If you’re not going to drive your vehicle for 25 days or more, take off the
black, negative
(-) cable from the battery. This will help keep your battery
from running down.
6-45
ProCarManuals.com

The purpose of regular rotation is to achieve more uniform wear for all tires
on the vehicle. The first rotation
is the most important. See “Scheduled
Maintenance Services”
in the Index for scheduled rotation intervals.
FRT FRT
When rotating your
tires, always use the
correct rotation
pattern shown here.
When rotating your
tires,
always use one
of the correct rotation
patterns shown here.
After the tires have been rotated, adjust the front and rear inflation pressures
as shown
on the CertificatiodTire label. Make certain that all wheel nuts are
properly tightened.
See “Wheel Nut Torque” in the Index.
6-57
ProCarManuals.com

Finish Damage
Any stone chips, fractures or deep scratches in the finish should be repaired
right away. Bare metal will corrode quickly and may develop
into a major
repair expense.
Minor chips and scratches can be repaired
with touch-up materials available
from your dealer
or other service outlets. Larger areas of finish damage can
be corrected
in your dealer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust control can collect on
the underbody. If these are not removed, accelerated corrosion (rust) can
occur
on the underbody parts such as fuel lines, frame, floor pan, and
exhaust system even though
they have corrosion protection.
At least every spring, flush these materials from the underbody with plain
water. Clean any areas where mud and other debris can collect. Dirt packed
in closed areas of the frame should be loosened before being flushed. Your
dealer or an underbody vehicle washing system can do this for
you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a chemical Fallout.
Airborne pollutants can fall upon and attack painted surfaces on your
vehicle. This damage can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched
into the paint surface.
Although no defect
in the paint job causes this, GM will repair, at no charge
to the owner, the surfaces of new vehicles damaged by this fallout condition
within
12 months or 12,000 miles (20 000 km) of purchase, whichever
comes first.
6-70
ProCarManuals.com

Scheduled Maintenance Services
IMPORTANT:
KEEP ENGINE OIL
AT THE PROPER
LEVELAND CHANGE
AS RECOMMENDED
Section
7
This section covers the maintenance required for your vehicle. Your vehicle
needs these services
to retain its safety, dependability and emission control
performance.
GM -
lo
Protection
Have you purchased the GM Protection Plun? The Plun supplements your
new vehicle warranties. See your GM dealer for detui1.s.
Introduction
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your vehicle in good
working condition, but also helps
the environment. All recommended
maintenance procedures are important. Improper vehicle maintenance or the
removal
of important components can significantly affect the quality of the
air we breathe. Improper fluid levels or even
the wrong tire inflation can
increase the level
of emissions from your vehicle. To help protect our
environment, and
to help keep your vehicle in good condition, please
maintain your vehicle properly.
7- 1
ProCarManuals.com

How This Section is Organized
The remainder of this section is divided into five parts:
“Part A: Scheduled Maintenance Services” shows what to have done and
how often. Some of these services can be complex,
so unless you are
technically qualified and have
the necessary equipment, you should let your
dealer’s service department or another qualified service center do these jobs.
If you are skilled enough to do some work on your vehicle, you will
probably want
to get the service information GM publishes. See “Service
Publications”
in the Index.
“Part B: Owner Checks and Services” tells you what should be checked
whenever you stop for fuel. It also explains what you can easily do
to help
keep your vehicle
in good condition.
“Part C: Periodic Maintenance Inspections” explains important
inspections that your
GM dealer’s service department or another qualified
service center should perform.
“Part D: Recommended Fluids and Lubricants” lists some products GM
recommends to help keep your vehicle properly maintained. These products,
or their equivalents, should be used whether
you do the work yourself or
have it done.
“Part E: Maintenance Record” provides a place for you to record the
maintenance performed
on your vehicle. Whenever any maintenance is
performed, be sure to write
it down in this part. This will help you
determine when your next maintenance should be done. In addition,
it is a
good idea to keep your maintenance receipts. They may be needed to
qualify your vehicle
for warranty repairs.
7-2
ProCarManuals.com

Part A: Scheduled Maintenance Services
Using Your Maintenance Schedule
We at General Motors want to help you keep your vehicle in good working
condition. But we don’t know exactly how
you’ll drive it. You may drive
very short distances
only a few times a week. Or you may drive long
distances all the time
in very hot, dusty weather. You may use your vehicle
in making deliveries. Or you may drive it to work, to do errands or in many
other ways.
Because of all the different ways people use their GM vehicles, maintenance
needs vary. You may
even need more frequent checks and replacements than
you’ll find
in the schedules in this section. So please read this section and
note how
you drive. If you have any questions on how to keep your vehicle
in good condition, see your GM dealer.
This part tells you the maintenance services
you should have done and when
you should schedule them. If you go to your dealer for your service needs,
you’ll know that GM-trained and supported service people will perform the
work using genuine GM parts.
The proper fluids and lubricants to use are listed in Part D. Make sure
whoever services your vehicle uses these. All parts should be replaced and
all necessary repairs done before you or anyone else drives the vehicle.
These schedules are
for vehicles that:
carry passengers and cargo within recommended limits. You will find
these limits on your vehicle’s CertificatiodTire label. See “Loading
Your Vehicle”
in the Index.
are driven on reasonable road surfaces within legal driving limits.
are driven off-road in the recommended manner. See “Off Road
Driving With Your Four-wheel Drive Vehicle”
in the Index.
use the recommended unleaded fuel. See “Fuel” in the Index.
Selecting the Right Schedule
The proper maintenance schedule for your vehicle depends on which engine
you have in your vehicle and how you use your vehicle.
Gasoline engine vehicles and diesel engine vehicles have different
maintenance requirements. If you have a diesel engine, follow
a schedule
designated for diesel engine vehicles
only. If you have a gasoline engine,
you must first determine whether your engine has a light duty or a heavy
duty emissions classification. Follow a maintenance schedule designated for
gasoline engines with the emissions classification (light duty or heavy duty)
for your engine. See “Engine Identification”
in the Index to find your
engine’s emission classification.
7-3
ProCarManuals.com

If your engine has more than one emissions classification, the classification
is determined by the Gross Vehicle Weight Rating (GVWR) of your vehicle
as shown on the Certification Label. See “Loading Your Vehicle” in the
Index.
Once you’ve determined your engine type and,
if necessary, emissions
classification, you’ll need
to decide which of the two schedules is right for
your vehicle. See Definitions for Maintenance Schedule I and Maintenance
Schedule I1 following.
Schedule I Definition - Gasoline Engines With Light Duty
Emissions
Follow Maintenance Schedule I if any one of these is true for your vehicle:
0 Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly
important when outside temperatures are below freezing.
stop-and-go traffic).
0 Most trips include extensive idling (such as frequent driving in
0 You operate your vehicle in dusty areas or off-road frequently.
You frequently tow a trailer or use a carrier on top of your vehicle.
Schedule
I should also be followed if the vehicle is used for delivery
service, police, taxi, or other commercial application.
Schedule I Intervals - Gasoline Engines With Light Duty
Emissions
Every
3,000 Miles (5 000 km) or 3 Months
Engine Oil and Filter Change
Chassis Lubrication
Drive Axle Service
At 6,000 Miles (10 000 km) - Then Every 12,000 Miles (25 000 km)
Tire Rotation
Every 15,000 Miles (25 000 km)
Air Cleaner Filter Inspection, if driving in dusty conditions
Front Wheel Bearing Repack (or at each brake relining)
(2WD Only)
7-4
ProCarManuals.com

Every 30,000 Miles (50 000 km)
Cooling System Service (or every 24 months, whichever occurs first)
Spark Plug Replacement
Fuel Filter Replacement
Air Cleaner Filter Replacement Front Wheel Bearing Repack
Every 50,000 Miles (83 000 km)
Automatic Transmission Service (severe conditions only)
Every 60,000 Miles (100 000 km)
Spark Plug Wire Inspection
Engine Accessory Drive Belt Inspection
Fuel Tank, Cap and Lines Inspection
Engine Timing Check
Schedule 1 Definition - Gasoline Engines With Heavy Duty
Emissions
Follow Maintenance Schedule I if any one of these is true for your vehicle:
e
e
e
e
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).
You operate
your vehicle in dusty areas or off-road frequently.
You frequently tow
a trailer or use a carrier on top of your vehicle.
Schedule
I should also be followed if the vehicle is used for delivery
service, police, taxi, or other commercial application.
Schedule I Intervals - Gasoline Engines with Heavy Duty
Emissions
Every
3,000 Miles (5 000 km)
Engine Oil and Filter Change (or every 3 months, whichever occurs first)
Chassis Lubrication (or every
3 months, whichever occurs first)
Drive Axle Service
7-6
ProCarManuals.com