2003 GMC SAVANA maintenance

Rear Axle
When to Check Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant. SeePart A: Scheduled
Maintenance Services on page 6-4.
How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface.If you have the 1500 Series, the proper level is from
5/8 inch (15 mm) to 1 5/8 inch (40 mm) below the
bottom of thefiller plug hole. The proper level for the
2500 and 3500 Series is from 0 to 1/4 (6 mm) below the
bottom of thefiller plug hole. Add only enoughfluid to
reach the proper level.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. SeePart D: Recommended
Fluids and Lubricants on page 6-18.
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Front Axle
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant and when to change it.
SeePart A: Scheduled Maintenance Services on
page 6-4.
How to Check Lubricant
To get an accurate reading, the vehicle should be on
a level surface.
If the level is below the
bottom of thefiller plug
hole, you may need to add
some lubricant.When the differential is cold, add enough lubricant to
raise the level to 3/8 inch (10 mm) below thefiller
plug hole.
When the differential is at operating temperature
(warm), add enough lubricant to raise the level to the
bottom of thefiller plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. SeePart D: Recommended
Fluids and Lubricants on page 6-18.
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Noise Control System
Tampering with Noise Control
System Prohibited
The following information relates to compliance with
federal noise emission standards for vehicles with a
Gross Vehicle Weight Rating (GVWR) of more than
10,000 lbs (4 536 kg). The Maintenance Schedule
provides information on maintaining the noise control
system to minimize degradation of the noise emission
control system during the life of your vehicle. The noise
control system warranty is given in your warranty booklet.
These standards apply only to vehicles sold in the
United States.
Tampering With Noise Control System
Prohibited
Federal law prohibits the following acts or the causing
thereof:
1. The removal or rendering inoperative by any person,
other than for purposes of maintenance, repair or
replacement, of any device or element of design
incorporated into any new vehicle for the purpose of
noise control, prior to its sale or delivery to the
ultimate purchaser or while it is in use; or2. The use of the vehicle after such device or element
of design has been removed or rendered inoperative
by any person.
Among those acts presumed to constitute tampering are
the acts listed below.
Insulation:
•
Removal of the noise shields or any underhood
insulation.
Engine:
•
Removal or rendering engine speed governor
(if equipped) inoperative so as to allow engine
speed to exceed manufacturer specifications.
Fan and Drive:
•
Removal of fan clutch (if equipped) or rendering
clutch inoperative.
•Removal of the fan shroud (if equipped).
Air Intake:
•
Removal of the air cleaner silencer.
•Modification of the air cleaner.
Exhaust:
•
Removal of the muffler and/or resonator.
•Removal of the exhaust pipes and exhaust pipe
clamps.
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Dual Tire Operation
When the vehicle is new, or whenever a wheel, wheel bolt
or wheel nut is replaced, check the wheel nut torque after
100, 1,000 and 6,000 miles (160, 1 600 and 10 000 km)
of driving. For proper torque and wheel nut tightening
information, see“Tightening the Wheel Nuts”later in
this section.
The outer tire on a dual wheel setup generally wears
faster than the inner tire. Your tires will wear more
evenly and last longer if you rotate the tires periodically.
See“Tire Inspection and Rotation”earlier in this section.
Also see“Scheduled Maintenance Services”in the Index
for scheduled rotation intervals
{CAUTION:
If you operate your vehicle with a tire that is
badly underinflated, the tire can overheat. An
overheated tire can lose air suddenly or catch
fire. You or others could be injured. Be sure all
tires (including the spare) are properly inflated.
See“Tires”and“Inflation–Tire Pressure”in the Index
for more information on proper tire inflation.
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km).
Any time you notice unusual wear, rotate your tires as
soon as possible and check wheel alignment. Also
check for damaged tires or wheels. SeeWhen It Is Time
for New Tires on page 5-60andWheel Replacement
on page 5-63for more information.
Make sure the spare tire is stored securely. Push, pull,
and then try to rotate or turn the tire. If it moves,
use the ratchet/wheel wrench to tighten the cable.
SeeChanging a Flat Tire on page 5-66.
If your vehicle has dual rear wheels, also seeDual Tire
Operation on page 5-58.
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The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. Thefirst rotation
is the most important. See“Part A: Scheduled
Maintenance Services,”in Section 6, for scheduled
rotation intervals.
If your vehicle has single rear wheels, always use one of
the correct rotation patterns shown here when rotating
your tires.If your vehicle has dual rear wheels, always use one of
the correct rotation patterns shown here when rotating
your tires.
When you install dual wheels, be sure that vent holes in
the inner and outer wheels on each side are lined up.
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Finish Damage
Any stone chips, fractures or deep scratches in thefinish
should be repaired right away. Bare metal will corrode
quickly and may develop into major repair expense.
Minor chips and scratches can be repaired with touch-up
materials avaliable from your dealer or other service
outlets. Larger areas offinish 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 debris can collect. Dirt packed in close areas of
the frame should be loosened before beingflushed.
Your dealer or an underbody car 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 occursfirst.
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Normal Maintenance Replacement Parts
Replacement part numbers listed in this section are based on the latest information available at the time of printing,
and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it was
built, or if you have any questions, please contact your GM dealer.
These specifications are for information only. If you have any questions, see the service manual for the chassis or
refer to the body manufacturer’s publications.
VIN Code W V T U
Oil Filter* PF47 PF44 PF44 PF44
Engine Air Cleaner /Filter* A1621C A1621C A1621C A1621C
Passenger Compartment
Air Filter Kit**52485513 52485513 52485513 52485513
PCV Valve* CV 769–C CV 2001–C CV 2001–C CV 2001–C
Spark Plugs 41–932 41–974 41–974 41–974
Fuel Filter* 6F6Z6 GF626 GF626 GF626
Wiper Blades** 15153642 15153642 15153642 15153642
Wiper Blade Type ITTA ITTA ITTA ITTA
Wiper Blade Length22 inches
(56.0 cm)22 inches
(56.0 cm)22 inches
(56.0 cm)22 inches
(56.0 cm)
* ACDelco
®part number
** GM part number
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Maintenance Schedule......................................6-2
Introduction...................................................6-2
Your Vehicle and the Environment....................6-2
Maintenance Requirements..............................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-5
Part B: Owner Checks and Services................6-12
At the First 100, 1,000 and 6,000 Miles
(160, 1 600 and 10 000km)........................6-12
At Each Fuel Fill..........................................6-12
At Least Once a Month.................................6-12
At Least Twice a Year...................................6-13At Least Once a Year...................................6-13
Part C: Periodic Maintenance Inspections.........6-16
Steering and Suspension Inspection................6-16
Exhaust System Inspection............................6-16
Fuel System Inspection..................................6-16
Engine Cooling System Inspection...................6-16
Throttle System Inspection.............................6-17
Rear Axle Service.........................................6-17
Transfer Case and Front Axle
(All-Wheel Drive) Inspection........................6-17
Brake System Inspection................................6-17
Part D: Recommended Fluids
and Lubricants..........................................6-18
Part E: Maintenance Record...........................6-20
Section 6 Maintenance Schedule
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