1993 GMC SIERRA brake

To Resume a Set Speed
Suppose you set your Cruise Control at a desired speed and th\
en you apply
the brake. This, of course, shuts off the Cruise Control. But you don’t need
to reset it. Once you’re going about
25 mph (40 kmlh) or more, you can
move the Cruise switch
from ON to RIA for about half a second.
I
K224
You’ll go right back up to your chosen speed and stay ther\
e.
I
r 4 If you hold the switch at R/A longer than half a second, the vehicle
will keep going faster until you release the switch or apply \
the brake.
You could be startled and even lose control.
So unless you want to
1 go faster, don’t hold the switch at R/A.
2-49
ProCarManuals.com

To Reduce Speed While Using Cruise Control
1
K2260
1. Push in the button at the end of the lever until you reach the lower
speed you want, then release it.
2. To slow down in very small amounts, push the button for less than a
half second. Each time you do this, you’ll go 1 mph (1.6 km/h) slower.
Passing Another Vehicle While Using Cruise Control
Use the accelerator pedal to increase your speed. When you take your foot
off the pedal, your vehicle will slow down to the Cruise Control speed you set
earlier.
Using Cruise Control on Hills
How well your Cruise Control will work on hills depends upon \
your speed,
load, and the steepness of the hills. When going up steep hills, you may
have to step on the accelerator pedal to maintain your speed. When going
downhill, you may have to brake or shift to a lower gear to keep your speed
down.
Of course, applying the brake takes you out of Cruise Control. Many
drivers find this to be too much trouble and don’t use Cruise Control on
steep hills.
When you turn
off the Cruise Control or the ignition, your Cruise Control set
speed memory
is erased.
2-5 1
ProCarManuals.com

Features & Confmls
To Get Out of Cruise Control
I
K2206
There are several ways to turn off the Cruise Control:
1. Step lightly on the brake pedal or push the clutch pedal, if you have a
manual transmission
OR;
2. Move the Cruise switch to OFF.
2-52
ProCarManuals.com

Daytime Running Lights (DRL) Indicator Light (Canada Only)
K2318
If your vehicle was first sold, when new, in Canada, you will have this light on
the instrument panel. It goes on whenever the Daytime Running \
Lights are on.
Daytime Running Lights (Canada Only)
The Canadian Federal Government has decided that “Daytime Run\
ning
Lights” (DRL) are a useful feature, in that
DRL can make your vehicle more
visible to pedestrians and other drivers during daylight hours. DRL are
required on new vehicles sold in Canada.
The high beam headlights will come on at reduced brightness in daylight
when:
The ignition is on
The headlight switch is off, and
The parking brake is released
When you turn on your headlights, the DRL
will switch off and the exterior
lights will come on. When you turn
off the headlights, the exterior lights will
go out and the high beam lights will switch to the reduced brightness
of DRL
again. The DRL indicator light on the instrument panel will go\
on whenever
the DRL are on. This light means that only the DRL are on. When you turn
on your exterior lights, this light will go out.
Of course, you may still turn on
the headlights any time you need to.
To idle your vehicle with the DRL off, set the parking brake. The DRL will
stay
off until you release the parking brake.
2-55
ProCarManuals.com

you know they’re working. If you are familiar. with this section, you should not
be alarmed when this happens.
Gages can indicate when there may be or is _a problem with one of your
vehicle’s functions. Often gages and warning lights work together
to let you
know when there’s a problem with your vehicle.
When one of the warning lights comes on and stays on when yo\
u are driving, or when one of the gages shows there may be a probl\
em, check the
section that tells you what to do about it. Please follow the\
manual’s advice.
Waiting to do repairs can be costly-and even dangerous.
So please get to
know your warning lights and gages. They’re a big help.
Brake System. Warning Light
BRAKE
. , K2325
Your vehicle’s hydraulic brake system is divided into two parts. If ,one‘ part
isn’t working, the other part can still work and stop you. \
For good braking,
though, you need both- systems working well.
Your vehicle also has rear-wheel antilock brakes.
If the warning light goes on,
there could be a brake problem with either your regular or rear wheel antilock
brakes, or both. Have your brake system inspected right away.
This light should come on as you start the vehicle.
If it doesn’t come on
then, have
it fixed so it will be ready to warn you if there’s a problem.
This light
will also come on when you set your parking brake, and will stay
on
if your parking brake doesn’t release fully. If it stays on after your parking
brake is fully released,
it means you may ‘have a brake problem. If the light
comes on while driving, pull
off the road and stop carefully. You may notice
2-79
ProCarManuals.com

Features & Controls
that the pedal is harder to push. Or, the pedal may go closer to the floor.\
It
may take longer to stop. If the light is still on, have the vehicle towed for
service. (See “Towing Your Vehicle” in the Index.)
CAUTION
* Your brake system may not be working properly if the brake warning
light is on. Driving with the brake warning light on can lead\
to an
accident.
If the light is still on after you’ve pulled off the road and
stopped carefully, have
+hq vehicle towed for service.
“WATER IN FUEL” Light
WATER
IN
FUEL I
-l PB010
This light will come on to warn you if there is too much water in the diesel
fuel system. For more information on how this light works, see\
“Diesel Fuel
Requirements and Fuel System” in the Index.
2-80
ProCarManuals.com

Pavement Markings
NO PASSING ZONE
AM40201 6
Pavement markings add to traffic signs and signals. They give information to
drivers without taking attention from the roadway. A solid yellow line on your
side
of the road or lane means “don’t cross.”
Your Own Signals
Drivers signal to others, too. It’s not only more polite, it’s safer to let other
drivers know what you are doing. And in some places the law requires driver
signals.
Turn and lane change signals: Always signal when you plan to turn or
change lanes.
If necessary, you can use hand signals out the window: Left arm \
straight out
for a left turn, down for
slow or about-to-stop, and up for a right turn.
Slowing down: If time allows, tap the brake pedal once or twice in advance
of slowing or stopping. This warns the driver behind you.
Disabled: Your four-way flashers signal that your vehicle is disabled or is a
hazard. See “Hazard Warning Flasher” in the Index.
Traffic Officer
The traffic police officer is also a source of important informaaon. The officer’s
signals govern, no matter what the traffic lights or other sig\
ns say.
The next part discusses some of the road conditions you may e\
ncounter.
4-9
ProCarManuals.com

Your Driving and the Road
Defensive Driving
The best advice anyone can give about driving is: Drive defens\
ively. Please start with a very important safety device in your vehicle: Buckle up,
(See “Safety Belts” in the Index.)
Defensive driving really means “be ready for anything.” On\
city streets, rural
roads, or freeways, it means “always expect the unexpected.’’
Assume that pedestrians or other drivers are going to be carel\
ess and make mistakes. Anticipate what they might
do. Be ready for their mistakes.
Expect children to dash out from behind parked cars, often fol\
lowed by other
children. Expect occupants in parked cars to open doors into traffic. Watch for
movement
in parked cars-someone may be about to open a door,
Expect other drivers to run stop signs when you are on a through street, Be
ready to brake
if necessary as you go through intersections. You may not
have to use the brake, but
if you do, you will be ready,
If you’re driving through a shopping center parking lot where there are
well-marked lanes, directional arrows, and designated parking are\
as, expect
some drivers to ignore all these markings and dash straight to\
ward one part
of the lot.
Pedestrians can be careless. Watch for them. In general, you must give way
to pedestrians even
if you know you have the right of way.
Rear-end collisions are about the most preventable of accidents. Yet they are
common. Allow enough following distance.
It’s the best defensive driving
maneuver, in both city and rural driving. You never know when the vehicle in
front of you is going to brake or turn suddenly.
Here’s a final bit of information about defensive driving. The most dangerous
time for driving in the
US. is very early on Sunday morning. In fact, GM
Research studies show that the most and the least dangerous times for
driving, every week, fall on the same day. That day is Sunday. The most
dangerous time is Sunday
3 a.m. to 4 a.m. The safest time is Sunday from
10 a.m. to 11 a.m. Driving the same distance on a Sunday at 3 a.m. isn’t
just a little more dangerous than it
is at 10 a.m. It’s about 134 times more
dangerous.
That leads to the next part.
4-1 0
ProCarManuals.com