1999 CHEVROLET VENTURE ECU

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5-29
10. Tighten the wheel nuts
firmly in a crisscross
sequence, as shown.
CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to become loose
and even come off. This could lead to an accident.
Be sure to use the correct wheel nuts. If you have
to replace them, be sure to get new original
equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to
100 lb
-ft (140 N´m).
NOTICE:
Improperly tightened wheel nuts can lead to
brake pulsation and rotor damage. To avoid
expensive brake repairs, evenly tighten the wheel
nuts in the proper sequence and to the proper
torque specification.
Don't try to put a wheel cover on the compact spare tire.
It won't fit. Store the wheel cover securely in the rear of
the vehicle until you have the flat tire repaired
or replaced.
NOTICE:
Wheel covers won't fit on your compact spare.
If you try to put a wheel cover on your compact
spare, you could damage the cover or the spare.

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5-30 Storing a Flat or Spare Tire and Tools
CAUTION:
Storing a jack, a tire or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision, loose
equipment could strike someone. Store all these
in the proper place.
1. Lay the tire near the rear of the vehicle with the
valve stem down.
2. Remove the small center cap by tapping the back of
the cap with the extension of the shaft.
3. Slide the cable retainer through the center of the
wheel and start to raise the tire.
Make sure the retainer is fully seated across the
underside of the wheel.4. When the tire is almost in the stored position,
turn the tire so the valve is towards the rear of
the vehicle.
This will help when you check and maintain tire
pressure in the spare.
5. Keep raising the wheel until you hear the hoist
mechanism click twice.
This means the wheel is firmly stored against the
underside of the vehicle.
6. Push against the wheel to be sure it does not move
and is stored securely.
7. Replace all jacking tools as they were stored in the
jack storage compartment and replace the
compartment cover.
To replace the cover, line up the tabs on the right of
the cover with the slots in the cover opening. Push
the cover in place and push down the tab so that it
rests in the groove. This secures the cover in place.

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6-16
Checking or Replacing the Air Cleaner/Filter
1. Unlatch the two hooks on top of the air
cleaner housing.
2. Turn back the air inlet panel and rest it on top of the
housing. The air intake tube is designed to flex back;
you do not need to disconnect it.
3. After replacing the air cleaner filter, seat the tabs on
the bottom of the panel into the slots at the bottom.
4. Latch the hooks to secure the panel in place. If the
panel moves easily, check that the tabs are seated
correctly in the slots.
CAUTION:
Operating the engine with the air cleaner/filter
off can cause you or others to be burned. The air
cleaner not only cleans the air, it stops flame if
the engine backfires. If it isn't there, and the
engine backfires, you could be burned. Don't
drive with it off, and be careful working on the
engine with the air cleaner/filter off.
NOTICE:
If the air cleaner/filter is off, a backfire can cause
a damaging engine fire. And, dirt can easily get
into your engine, which will damage it. Always
have the air cleaner/filter in place when
you're driving.
Passenger Compartment
Air Filter Replacement
Passenger compartment air, both outside air and
recirculated air, is routed through a passenger
compartment filter, which is part of a two
-piece filter
system. The filter removes certain contaminants from
the air, including pollen and dust particles, as well as
odors such as exhaust fumes. Reductions in airflow,
which may occur more quickly in dusty areas, indicate
that the filter needs to be replaced early. For how often
to change the air filter, see ªMaintenance Scheduleº in
the Index.
The access panel for the passenger compartment air
filter is located in the back of the glove box.

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6-38
A. Taillamp Bulb
B. Back
-Up Lamp BulbC. Turn Signal Lamp Bulb
D. Stop/Taillamp Bulb
6. Snap the bulb holder back into place, making sure all
retaining tabs are properly over the bulb holder tabs.
7. Reinstall the taillamp assembly by inserting the
outboard locating/retaining pins until the lamp is
seated. Secure with the inboard screws.
For any bulb changing procedure not listed in this
section, contact your dealer's service department.
Windshield Wiper Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. See ªWiper Blade
Checkº in Section 7 of this manual under Part B ªOwner
Checks and Servicesº for more information.
Replacement blades come in different types and are
removed in different ways. For the proper type and
length, see ªNormal Maintenance Replacement Partsº in
the Index.
Here's how to remove the Shepherd's Hook type:
1. Turn the wipers on to the lowest intermittent setting.
2. Turn off the ignition while the wipers are at the outer
positions of the wipe pattern. The blades are more
accessible for removal/replacement while in
this position.
3. Pull the windshield wiper arm away from the
windshield or backglass.

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6-39
4. While holding the wiper arm away from the glass,
push the release clip from under the blade
connecting point and pull the blade assembly down
toward the glass to remove it from the wiper arm.
5. Push the new wiper blade securely on the wiper arm
until you hear the release clip ªclickº into place.
Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service, see
your Chevrolet Warranty booklet for details.
CAUTION:
Poorly maintained and improperly used tires
are dangerous.

Overloading your tires can cause
overheating as a result of too much friction.
You could have an air
-out and a serious
accident. See ªLoading Your Vehicleº in
the Index.
CAUTION: (Continued)

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6-47 Tire Chains
NOTICE:
Use tire chains only where legal and only when
you must. Use only SAE Class ªSº type chains
that are the proper size for your tires. Install
them on the front tires and tighten them as
tightly as possible with the ends securely
fastened. Drive slowly and follow the chain
manufacturer's instructions. If you can hear the
chains contacting your vehicle, stop and retighten
them. If the contact continues, slow down until it
stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.
Appearance Care
Remember, cleaning products can be hazardous. Some
are toxic. Others can burst into flame if you strike a
match or get them on a hot part of the vehicle. Some are
dangerous if you breathe their fumes in a closed space.
When you use anything from a container to clean your
vehicle, be sure to follow the manufacturer's warnings
and instructions. And always open your doors or
windows when you're cleaning the inside.
Never use these to clean your vehicle:

Gasoline

Benzene

Naphtha

Carbon Tetrachloride

Acetone

Paint Thinner

Turpentine

Lacquer Thinner

Nail Polish Remover
They can all be hazardous
-- some more than
others
-- and they can all damage your vehicle, too.

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6-63
Mini Relays Usage
9
-COOL FAN RH FAN 1, LH FAN 2
10
-COOL FAN 2 LH FAN 2
11
-IGN MAIN FUSES: A/C CLU, IGN 1-U/H,
INS, ELEK IGN, TCC
12
-COOL FAN 1 RH FAN 1, LH FAN 2
Micro Relays Usage
13
-A/C CLU A/C Clutch
14
-FUEL PUMP Fuel Pump
15
-F/PMP SPD
CONTNot Used
16
-HORN Horn
17
-FOG LAMP LH Fog Lamp, RH Fog Lamp,
Fog Lamp Indicator
Mini Fuse Usage
18
-INJ Fuel Injectors 1-6
19
-SPARE Not Used
20 Not UsedMini Fuse Usage
21
-IGN1-UH Evaporative Emissions (EVAP)
Canister Purge Valve, Heated
Oxygen Sensors 1 and 2, Mass
Air Flow (MAF) Sensor
22
-SPARE Not Used
23
-SPARE Not Used
24
-SPARE Not Used
25
-ELEK IGN Ignition Control Module (ICM)
26
-SPARE Not Used
27
-B/U LAMP Transaxle Range Switch to
Back
-up Lamps
28
-A/C CLU A/C CLU Relay to A/C
Compressor Clutch Oil
29
-RADIO Driver Information Display,
Heater A/C Control, Radio, Rear
Side Door Actuator Control
Motor, Remote Control Door
Lock Receiver (RCDLR),
Security Indicator Lamp and
Theft
-Deterrent Shock Sensor

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9-2
Brake
Adjustment 6-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-30 . . . . . . . . . . . . . . . . . . . . . . . .
System Warning Light 2-90, 6-28 . . . . . . . . . . . . . . . . . . . .
Trailer 4-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Shift Interlock (BTSI) 2-50 . . . . . . . . . . . . . . . . .
Transaxle Shift Interlock Check 7-32 . . . . . . . . . . . . . . . . . .
Wear 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes, Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . .
Break-In, New Vehicle 2-37 . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI Check 7-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bucket Seats 1-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting 1-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Folding or Reclining the Seatback 1-14 . . . . . . . . . . . . . . . .
Removing 1-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing 1-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canada, Ordering Service and Owner Publications 8-11 . . .
Canadian Roadside Assistance 8-7 . . . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-64 . . . . . . . . . . . . . . . . . . . . . .
Captain's Chairs 1-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing 1-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing 1-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-52, 4-28, 4-36 . . . . . . . . . . . . . . . . . . . .
Cargo Net 2-73 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cassette
Deck Service 7
-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player 3-11, 3-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player Care 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CD Adapter Kits 3-14, 3-19 . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Rear Passenger Position
Bench Seat 1
-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bucket Seat 1-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certification/Tire Label 4-29 . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains
Safety 4
-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire 6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Indicator Light 2-89 . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-90 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Restraints 1-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Built-in 1-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning Built-in 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing from a Built-in 1-67 . . . . . . . . . . . . . . . . . . . . . .
Securing in a Built-in 1-61 . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in a Rear Outside Seat Position 1-76 . . . . . . . . . . .
Securing in the Center Seat Position (Bucket Seat) 1-82 . . . . .
Securing in the Center Seat Position
(Third Row Bench Seat) 1
-80 . . . . . . . . . . . . . . . . . . . . . .
Securing in the Right Front Seat Position 1-84 . . . . . . . . . .
Storing a Built-in 1-68 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Top Strap 1-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Put 1-74, 1-75 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-79 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Breakers and Fuses 6-58 . . . . . . . . . . . . . . . . . . . . . . .
Cleaner, Air 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .