1999 CHEVROLET S10 ignition

yellowblue
4-35
If you drive regularly in steep country, or if you're
planning to visit there, here are some tips that can
make your trips safer and more enjoyable. (See
ªOff
-Road Drivingº in the Index for information
about driving off
-road.)

Keep your vehicle in good shape. Check all fluid
levels and also the brakes, tires, cooling system and
transmission. These parts can work hard on
mountain roads.

Know how to go down hills. The most important
thing to know is this: let your engine do some of the
slowing down. Shift to a lower gear when you go
down a steep or long hill.
CAUTION:
If you don't shift down, your brakes could
get so hot that they wouldn't work well. You
would then have poor braking or even none going
down a hill. You could crash. Shift down to let
your engine assist your brakes on a steep
downhill slope.
CAUTION:
Coasting downhill in NEUTRAL (N) or with the
ignition off is dangerous. Your brakes will have to
do all the work of slowing down. They could get so
hot that they wouldn't work well. You would then
have poor braking or even none going down a hill.
You could crash. Always have your engine running
and your vehicle in gear when you go downhill.

Know how to go uphill. You may want to shift down
to a lower gear. The lower gears help cool your engine
and transmission, and you can climb the hill better.

Stay in your own lane when driving on two
-lane
roads in hills or mountains. Don't swing wide or cut
across the center of the road. Drive at speeds that let
you stay in your own lane.

As you go over the top of a hill, be alert. There could be
something in your lane, like a stalled car or an accident.

You may see highway signs on mountains that warn of
special problems. Examples are long grades, passing or
no
-passing zones, a falling rocks area or winding
roads. Be alert to these and take appropriate action.

yellowblue
4-40
Dust or dirt can enter the back of the transmission
through the opening created by removing the propeller
shaft if proper protection is not provided. Also, check
the transmission fluid level before driving the vehicle.
When towing your vehicle, turn the ignition to OFF.
To prevent your battery from draining while towing,
remove the RDO BATT fuse from the instrument panel
fuse block. Be sure to replace the fuse when you reach
your destination. See ªFuses and Circuit Breakersº in
the Index.
Be sure to use the proper towing equipment designed for
recreational vehicle towing. Follow the instructions for
the towing equipment.Loading Your Vehicle
The Certification/Tire label is found on the driver's door
edge, above the door latch. The label shows the size of
your original tires and the inflation pressures needed to
obtain the gross weight capacity of your vehicle. This is
called the Gross Vehicle Weight Rating (GVWR). The
GVWR includes the weight of the vehicle, all occupants,
fuel, cargo and trailer tongue weight, if pulling a trailer.

yellowblue
5-4
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren't touching
each other. If they are, it could cause a ground
connection you don't want. You wouldn't be able to
start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake firmly on both vehicles involved in
the procedure. Put an automatic transmission vehicle
in PARK (P) and a manual transmission vehicle
in NEUTRAL (N).
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter, or accessory power outlets, if you have this
option. Turn off all lamps that aren't needed as well
as radios. This will avoid sparks and help save both
batteries. In addition, it could save your radio!
4. Open the hoods and locate the batteries. Find
the positive (+) and negative (
-) terminals on
each battery.
CAUTION:
Using a match near a battery can cause battery
gas to explode. People have been hurt doing this,
and some have been blinded. Use a flashlight if
you need more light.
Be sure the battery has enough water. You don't
need to add water to the ACDelco Freedom

battery installed in every new GM vehicle. But if
a battery has filler caps, be sure the right amount
of fluid is there. If it is low, add water to take
care of that first. If you don't, explosive gas
could be present.
Battery fluid contains acid that can burn you.
Don't get it on you. If you accidentally get it in
your eyes or on your skin, flush the place with
water and get medical help immediately.

yellowblue
6-64
Fuse/Circuit
BreakerUsage
13 Auxiliary Power
14 Power Locks
15 4WD Switch, Engine Control
(VCM, PCM, Transmission)
16 Supplemental Inflatable Restraint
17 Front Wiper
18 Not Used
19 Radio Battery
20 Not Used
21 HVAC I, HVAC Control Head,
HVAC Devices
22 Anti
-Lock Brakes
23 Rear Wiper
24 Radio, Ignition
Engine Compartment Fuse Block
The fuse block is under the hood on the driver's side of
the engine compartment.
Remove the cover by turning the fastener
counterclockwise. To reinstall the fuse panel cover, push
in and turn the fastener clockwise.

yellowblue
7-45
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.

With an automatic transmission, the key should turn
to LOCK only when the shift lever is in PARK (P).

With a manual transmission, the key should turn to
LOCK only when you press the key release button.
On all vehicles, the key should come out only in LOCK.
Parking Brake and Automatic Transmission
PARK (P) Mechanism Check
CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.

To check the parking brake's holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.

To check the PARK (P) mechanism's holding ability:
With the engine running, shift to PARK (P). Then
release all brakes.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.

yellowblue
9-5
Hearing Impaired, Customer Assistance 8-4 . . . . . . . . . . . . . .
Heated Outside Rearview Mirrors 2-46 . . . . . . . . . . . . . . . . . .
Heating 3-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High/Low Beam Changer 2-36 . . . . . . . . . . . . . . . . . . . . . . . .
Highway Hypnosis 4-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hill and Mountain Roads 4-34 . . . . . . . . . . . . . . . . . . . . . . . . .
Hitches, Trailer 4-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hood 6-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horsepower 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Clutch 6-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check 7-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-21, 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydroplaning 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition
Positions 2-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Lock Check 7-45 . . . . . . . . . . . . . . . . . . . . . .
Illuminated Entry 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation, Tire 6-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night Rearview Mirror 2-45 . . . . . . . . . . . . . . . . .
Inspections
Brake System 7
-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Axle 7-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Cooling System 7-46 . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust Systems 7-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Boot Seal 7-46 . . . . . . . . . . . . . . . . . . . . .
Steering 7-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension 7-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle System 7-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer Case 7-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instrument Panel 2
-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cluster 2-52, 2-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block 6-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Lamps 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack, Tire 5-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Seat 1-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key in the Ignition 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinders Service 7-43 . . . . . . . . . . . . . . . . . . . . . .
Key Release Button 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keys 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labels
Certification/Tire 4-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse 6-63, 6-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt 1-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification 6-60 . . . . . . . . . . . . . . . . . . . . .
Vehicle Identification Number 6-60 . . . . . . . . . . . . . . . . . . .
Lamps 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dome 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Map 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamps On Reminder 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Latches, Seatback 1-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle with the Engine Running 2-28 . . . . . . .
Lighter 2-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

yellowblue
9-6
Lights
Air Bag Off 1-28, 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Bag Readiness 1-22, 2-56 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning 2-60, 4-7 . . . . . . . . . . . .
Brake System Warning 2-60 . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gages 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Reminder 1-7, 2-55 . . . . . . . . . . . . . . . . . . . . . .
Security Warning 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 4WD 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon 2-61 . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift 2-23, 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading, Truck-Camper 4-43 . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle 4-40 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle Off-Road Driving 4-14 . . . . . . . . . . . .
Locking Rear Axle 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lockout Prevention 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks
Door 2
-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transmission Check 7-45 . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinder Service 7-43 . . . . . . . . . . . . . . . . . . . . .
Power Door 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Control 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel Light 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants and Fluids 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication Service
Body 7
-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate 7-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lumbar Controls 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Record 7-51 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long Trip/Highway 7-6, 7-29 . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-42 . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-46 . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-48 . . . . . . . . . . . . .
Scheduled Maintenance Services 7-4 . . . . . . . . . . . . . . . . . .
Short Trip/City 7-5, 7-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance, Underbody 6-58 . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Trailer Towing 4-54 . . . . . . . . . . . . . . . . .
Malfunction Indicator Lamp 2-61 . . . . . . . . . . . . . . . . . . . . . .
Manual Front Seat 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Lumbar Support 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission
Check 7
-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-20, 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Methanol 6-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirrors 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illuminated Visor Vanity 2-49 . . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night Rearview 2-45 . . . . . . . . . . . . . . . . . . . . .
Power Remote Control 2-45 . . . . . . . . . . . . . . . . . . . . . . . . .
Visor Vanity 2-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model Reference vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mountain Roads 4
-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multifunction Lever 2-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Neutral
Automatic Transmission 2-20 . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission 2-22 . . . . . . . . . . . . . . . . . . . . . . . . . .
New Vehicle ªBreak-Inº 2-12 . . . . . . . . . . . . . . . . . . . . . . . . .