2006 CHEVROLET EXPRESS fuel cap

A. Battery. SeeBattery on page 6-43.
B. Radiator Pressure Cap. SeeCooling System on
page 6-28.
C. Coolant Recovery Tank. SeeCooling System on
page 6-28.
D. Automatic Transmission Fluid Dipstick. See
“Checking the Fluid Level” underAutomatic
Transmission Fluid (4-Speed Transmission)
on page 6-21orAutomatic Transmission Fluid
(6-Speed Transmission) on page 6-24.
E. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 6-15.
F. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 6-15.
G. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 6-20.
H. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 6-38.
I. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 6-40.
J. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 6-39.Engine Oil
For diesel engine vehicles, see “Engine Oil” in the
DURAMAX®Diesel manual.
Checking Engine Oil
It is a good idea to check the engine oil level at each
fuel fill. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 6-14
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If this is not done, the
oil dipstick might not show the actual level.
2. Pull out the dipstick and clean it with a paper towel
or cloth, then push it back in all the way. Remove it
again, keeping the tip down, and check the level.
6-15

Cooling System
If your vehicle has a diesel engine, see “Van Models”
under “Cooling System” in the DURAMAX®Diesel
Supplement.
The Cooling System allows the engine to maintain the
correct working temperature.
A. Radiator Pressure Cap
B. Coolant Recovery Tank
C. Engine Cooling Fan(s)
{WARNING:
An electric engine cooling fan under the hood can
start up even when the engine is not running and
can cause injury. Keep hands, clothing, and tools
away from any underhood electric fan.
{WARNING:
Heater, fuel operated heater (FOH), radiator
hoses, and other engine parts, can be very hot.
Do not touch them. If you do, you can be burned.
WARNING: (Continued)
6-28

Cold Tire Pressure:The amount of air pressure
in a tire, measured in pounds per square inch (psi)
or kilopascals (kPa) before a tire has built up heat
from driving. SeeInation - Tire Pressure on
page 6-68.
Curb Weight
:The weight of a motor vehicle with
standard and optional equipment including the
maximum capacity of fuel, oil, and coolant,
but without passengers and cargo.
DOT Markings
:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identification Number (TIN), an
alphanumeric designator which can also identify the
tire manufacturer, production plant, brand, and date
of production.
GVWR
:Gross Vehicle Weight Rating.
SeeLoading the Vehicle on page 5-19.
GAWR FRT
:Gross Axle Weight Rating for the
front axle. SeeLoading the Vehicle on page 5-19.
GAWR RR
:Gross Axle Weight Rating for the
rear axle. SeeLoading the Vehicle on page 5-19.Intended Outboard Sidewall
:The side of an
asymmetrical tire, that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
:The metric unit for air pressure.
Light Truck (LT-Metric) Tire
:A tire used on
light duty trucks and some multipurpose passenger
vehicles.
Load Index
:An assigned number ranging from 1
to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Ination Pressure
:The maximum
air pressure to which a cold tire can be inflated.
The maximum air pressure is molded onto the
sidewall.
Maximum Load Rating
:The load rating for a tire
at the maximum permissible inflation pressure
for that tire.
Maximum Loaded Vehicle Weight
:The sum of
curb weight, accessory weight, vehicle capacity
weight, and production options weight.
Normal Occupant Weight
:The number of
occupants a vehicle is designed to seat multiplied
by 150 lbs (68 kg). SeeLoading the Vehicle on
page 5-19.
6-66

Vehicle Maximum Load on the Tire:Load on
an individual tire due to curb weight, accessory
weight, occupant weight, and cargo weight.
Vehicle Placard
:A label permanently attached to
a vehicle showing the vehicle’s capacity weight and
the original equipment tire size and recommended
inflation pressure. See “Tire and Loading
Information Label” underLoading the Vehicle
on page 5-19.
Ination - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right.
It is not. If your tires do not have enough air
(under-ination), you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economyIf your tires have too much air (over-ination),
you can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazards
A vehicle specific Tire and Loading Information
label is attached to your vehicle. This label shows
your vehicle’s original equipment tires and the
correct inflation pressures for your tires when they
are cold. The recommended cold tire inflation
pressure, shown on the label, is the minimum
amount of air pressure needed to support your
vehicle’s maximum load carrying capacity.
For additional information regarding how much
weight your vehicle can carry, and an example of
the Tire and Loading Information label, seeLoading
the Vehicle on page 5-19. How you load your
vehicle affects vehicle handling and ride comfort.
Never load your vehicle with more weight than it
was designed to carry.
6-68

ApplicationCapacities
Metric English
Fuel Tank
Cutaway (Optional Tank)* 215.7 L 57.0 gal
Cutaway (Standard Tank) 124.9 L 33.0 gal
Passenger and Cargo 117.3 L 31.0 gal
* 159 inch (4 039 mm) wheelbase or 177 inch (4 496 mm) wheelbase only
Transmission Fluid (Pan Removal and Filter Replacement)
4-SPD 4L60-E 4.7 L 5.0 qt
6-SPD 6L90 6.0 L 6.3 qt
Wheel Nut Torque 190Y140 ft lb
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
Engine Specications
Engine VIN Code Transmission Spark Plug Gap
4.3L V6 X Automatic 1.52 mm (0.060 in)
4.8L V8 A Automatic 1.01 mm (0.040 in)
5.3L V8 4 Automatic 1.01 mm (0.040 in)
6.0L V8 G Automatic 1.01 mm (0.040 in)
6-117

•Engine air cleaner filter inspection. SeeEngine Air
Cleaner/Filter on page 6-20.
•Vehicles with diesel engine or GVWR above
4 536 kg (10,000 lbs) only: Shields inspection
for damage or looseness. Adjust or replace as
required. This is a Noise Emission Control Service.
Applicable to vehicles sold in the United States
and recommended for vehicles sold in Canada.
Additional Required Services
At the First 160 km/100 Miles,
1 600 km/1,000 Miles, and 10 000 km/
6,000 Miles
•
For vehicles with dual wheels: Check dual wheel
nut torque. For proper torque, seeCapacities
and Specications on page 6-116.
At Each Fuel Stop
•
Engine oil level check. SeeEngine Oil on
page 6-15.
•Engine coolant level check. SeeEngine Coolant on
page 6-29.
•Windshield washer fluid level check. SeeWindshield
Washer Fluid on page 6-39.
Once a Month
•
Tire inflation check. SeeInation - Tire Pressure on
page 6-68.
•Tire wear inspection. SeeTire Inspection and
Rotation on page 6-75.
Once a Year
•
Starter switch check. SeeOwner Checks and
Services on page 7-10.
•Parking brake and automatic transmission P (Park)
mechanism check. SeeOwner Checks and
Services on page 7-10.
•Automatic transmission shiftlock control system
check. SeeOwner Checks and Services on
page 7-10.
•Ignition transmission lock check. SeeOwner
Checks and Services on page 7-10.
•Engine cooling system and pressure cap pressure
check. Radiator and air conditioning condenser
outside cleaning. SeeCooling System on
page 6-28.
7-6

Audio System(s).............................................4-62
Automatic Door Lock.......................................3-11
Automatic Door Unlock....................................3-11
Automatic Headlamp System............................4-11
Automatic Transmission
Fluid..................................................6-21, 6-24
Operation...........................................3-27, 3-32
Axle, Rear.....................................................6-50
B
Battery..........................................................6-43
Electric Power Management..........................4-13
Run-Down Protection...................................4-14
Belt Routing, Engine.......................................7-15
Brake
Emergencies................................................ 5-5
Brakes..........................................................6-40
Antilock....................................................... 5-4
Parking......................................................3-36
System Warning Light..................................4-27
Braking........................................................... 5-3
Braking in Emergencies..................................... 5-5
Break-In, New Vehicle.....................................3-22
Bulb Replacement...........................................6-58
Center High-Mounted Stoplamp (CHMSL)........6-56
Front Turn Signal, Sidemarker and Parking
Lamps ....................................................6-55
Halogen Bulbs............................................6-53Bulb Replacement (cont.)
Headlamps.................................................6-53
License Plate Lamps....................................6-58
Taillamps....................................................6-56
Buying New Tires...........................................6-79
C
Calibration.....................................................4-42
California
Perchlorate Materials Requirements................. 6-4
Warning....................................................... 6-4
California Fuel.................................................. 6-6
Canadian Owners............................................... iii
Capacities and Specifications..........................6-116
Carbon Monoxide
Engine Exhaust...........................................3-40
Winter Driving.............................................5-16
Care of
Safety Belts..............................................6-104
Cargo Door Relocking.....................................3-10
CD, MP3 .......................................................4-72
Center High-Mounted Stoplamp (CHMSL)...........6-56
Chains, Tire...................................................6-84
Charging System Light....................................4-26
Check
Engine Lamp..............................................4-30
Checking Things Under the Hood......................6-12
Chemical Paint Spotting.................................6-108
2