1996 GMC SIERRA ECO mode

NOTICE:
Driving with the parking brake on can cause
your rear brakes to overheat.
You may have
to replace them, and you could also damage
other parts of your vehicle. Always check to be
sure your parking brake is fully released before
you drive.
If you are towing a trailer and are parking on any hill,
see “Towing a Trailer” in the Index. That section shows
what
to do first to keep the trailer from moving.
If you have a 3500 HD model, it is recommended that
the propshaft mounted parking brake be burnished as
part of the new vehicle break-in. The parking brake will
work best after it has been burnished following these
instructions.
Make
10 stops, using the parking brake foot pedal, from
20 mph (32 km/h) about 2 1/2 miles (4 km) apart. In
between stops, drive the vehicle at 20 mph (32 km/h).
Shifting Into PARK (P) (Automatic
Trawrission
Models Only)
It can be dangerous to get out of your vehicle if
the shift lever
is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can
roll.
If you have left the engine running, the vehicle
can move suddenly. You or others could be
injured.
To be sure your vehicle won’t move,
even when you’re on fairly level ground, use
the steps that follow. If you have four-wheel
drive and your transfer case is in NEUTRAL
(N)?
your vehicle will be free to roll, even if your shift
lever
is in PARK (P). So, be sure the transfer case
is in
a drive gear -- not in NEUTRAL (N). If
you’re pulling a trailer, see “Towing a Trailer’’
in the Index.
2-26
ProCarManuals.com

/A CAUTION: l!,L- .
Don’t keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire.
You or others could be burned.
Check
your oil as soon as possible and have your
vehicle serviced.
I NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by your
warranty.
Shift Light
SHIFT
This light is used on some
models
with manual
transmissions.
The
SHIFT indicator light will help you get the best fuel
economy. See “Shift Light” or “Shift Speeds”
in this
section for more information.
2-66
ProCarManuals.com

Temperature Knob
The middle knob on the control panel lets you select the
relative temperature
of the air flowing into the passenger
area of your vehicle. This knob will allow you to adjust
the relative air temperature independently
of the
function knob setting. Move the knob clockwise
toward
the red area for warmer air. Move the knob
counterclockwise toward the blue area for cooler air.
The right knob on the control panel allows you to
choose the direction of air delivery. The control knob
can be placed
in any position between two mode settings
to blend the flow of air.
/J VENT: This setting directs air through the
instrument panel outlets.
+H VENT/HEAT Use this setting to divide airflow
between the floor outlets and instrument panel outlets.
+’ HEATER: This setting directs air through the
heater floor outlets.
+e
+.
0
Qe
+’ DEFOG: This setting directs air to the heater
outlets and toward
the windshield.
DEFROST This setting directs air toward the
windshield.
Air Conditioning
On hot days, open the windows long enough to let hot
air inside escape. This reduces the time it takes for your
vehicle
to cool down. Then keep your windows closed
for
the air conditioner to work it’s best.
The recirculation button, between the fan and
temperature knobs, allows the air inside your vehicle to
be recirculated. This setting helps
to maximize your air
conditioner’s performance and your vehicle’s fuel
economy. This setting also
cools the air the fastest and
can be used
to keep unwanted odors and/or dust from
entering the vehicle. When using the air conditioner,
turn off recirculation after the vehicle reaches a
comfortable interior temperature. When the right knob
on the control panel is between HEATER and
DEFROST, the recirculation feature will
not function.
ProCarManuals.com

The A/C button, between the temperature and mode
knobs, allows
the air coming into your vehicle to be
cooled. This setting
is useful for normal cooling on hot
days. When
you use A/C with the recirculation button
pushed
in, turn off recirculation as soon as the vehicle
reaches a comfortable interior temperature.
With the
A/C on, move the temperature knob to MAX
for maximum cooling.
This setting also puts the system
in the recirculation mode and helps
to maximize your air
conditioner’s performance and your vehicle’s fuel
economy. This setting also cools the air the fastest. After
the vehicle’s interior reaches a comfortable temperature,
move the temperature knob clockwise to place the air
conditioning system
in the normal mode.
Heating
The heater works best if you keep your windows closed
while using
it. On cold days, use the HEATER or
VENT/HEAT setting with the temperature knob in the
red area.
If you use the engine coolant heater before starting your
engine (in cold weather (20°F (-8°C) or lower), your
heating system
will produce warmer air faster, to heat
the passenger compartment
in cold weather. The
use
of an engine coolant heater also reduces the
time
it takes for the engine to reach normal operating
temperature, and shortens the time
it takes the heater to
reach full output. For more information, see “Engine
Coolant Heater”
in the Index.
Ventilation System
For mild outside temperature when little heating or
cooling
is needed, use VENT to direct outside air
through
your vehicle. Air will flow through the
instrument panel outlets.
Your vehicle’s ventilation systeril supplies outside air
to the inside of your vehicle when it is moving. With
the side windows closed, air will flow into the front
air inlet grilles, through the vehicle, and out the air
exhaust valves.
Outside air will
also enter the vehicle when the heater or
the air conditioning fan is running, unless you have
the
recirculation button pushed in. For more information on
the recirculation button, see “Air Conditioning” earlier
in this section.
3-4
ProCarManuals.com

Setting the Clock for Systems without
Automatic Tone Control
Press SFT. Within five seconds, press and hold the
SEEK right arrow
until the correct minute appears on
the display. Press and hold the SEEK left arrow until the
correct hour appears
on the display.
Setting the Clock for Systems with
Automatic Tone Control
Press and hold HR until the correct hour appears on
the display. Press and hold
MIN until the correct
minute appears
on the display. To display the clock
with
the ignition off, press RECALL and the time
will
be displayed for a few seconds. There is an
initial two-second delay before the clock goes into
the time-set mode.
AM-FM Stereo
Playing the Radio
VOLUME-BAL: Turn the knob clockwise to turn the
radio on and counterclockwise
to turn it off. To increase
the volume, turn
the knob clockwise. To decrease the
volume, turn the knob counterclockwise. Display the
time
with the ignition off by pressing the
VOLUME-BAL knob. When the radio
is playing, press
this button
to recall the station frequency.
. 3-7
ProCarManuals.com

SCAN: Press and hold SEEK for two seconds until
SCAN appears on the display. SCAN allows you to
listen to stations for
a few seconds. The receiver will
continue to scan and momentarily stop at each station
until you press the button again. The sound will mute
while scanning.
AUTO TONE: Press this button to select among the
five preset equalization settings and tailor the sound to
the music or voice being heard. Each time
you press the
button, the selection
will switch to one of the preset
settings of CLASSIC, NEWS, ROCK, POP or JAZZ.
To
return to the manual mode, press and release this button
until MAN appears on the display. This will return the
tone adjustment to the TREB and BASS controls. If a
TREB or BASS control
is rotated, the AUTO TONE
setting will change to MAN.
PUSHBUTTONS: The six numbered pushbuttons let
you return to your favorite stations. You can set up to
18 stations (six AM, six FM 1 and six FMZ).
1. Press AM-FM to select the band.
2. Tune in the desired station by pressing TUNE or the
SEEK left or right arrows.
3. Press AUTO TONE to select the setting you prefer.
4. Press and hold one of the six pushbuttons.
5. The sound will mute. When it returns, release the
button. Whenever you press that numbered button, the
station you set will return and the
tone you selected
will be automatically selected for that button.
PSCAN: The preset scan button lets you scan through
your hvorite stations stored on your pushbuttons. Select
either the AM,
FMI or FM2 mode and then press
P.SCAN. It will scan through each station stored on your
pushbuttons and stop for a few seconds before
continuing to scan through all
of the pushbuttons. Press
P.SCAN again
or one of the pushbuttons to stop
scanning to listen
to a specific preset station. P.SCAN
will light up
on the display while in this mode. If one of
the stations stored on a pushbutton
is too weak for the
location you are in, the radio display will show the
channel number
(P 1 -P6) for several seconds before
advancing
to the next preset station.
3-12
ProCarManuals.com

NEXT (3): Press NEXT or the SEEK right arrow to
search for the next selection.
A minimum three-second
blank gap
is required for the player to stop at the
beginning of the selection. The tape direction arrow
will blink during the
SEEK operation.
REV (4): Press this button to rapidly reverse the tape to
the beginning of the cassette reel or until you press REV
again. The radio will play the last selected station while
reversing the tape.
The tape direction arrow will blink
during REV operation.
(5): Press this button'to reduce cassette tape noise.
The double-D symbol will appear
on the display while
the player
is in this mode.
Dolby
Noise Reduction is manufactured under a license
from Dolby Laboratories Licensing Corporation. Dolby
and the double-D symbol
are trademarks of Dolby
Laboratories Licensing Corporation.
FWD (6): Press this button to rapidly forward the tape
to the end of the cassette reel or
until you press FWD
again.
The radio will play the last selected station while
forwarding the tape. The tape direction arrow will blink
during
FWD operation.
AM-FM: Press this button to switch from a tape to
the radio.
TAPE AUX: Press this button to return to the tape
player. The lighted arrow will appear and show the
direction of play when a tape
is in the active mode.
EJECT Press this button to remove the tape. The radio
will now play. EJECT can be used with either the ignition
or radio
off. To load a cassette tape with the ignition or
radio off, press
EJECT before loading the cassette. t
CLN: This message may appear on the display. If it
does, your cassette tape player needs to be cleaned. It
will still play tapes, but you should clean it as soon as
possible
to prevent damage to your tapes and player. See
"Care of
Your Cassette Tape Player" in the 1nde.x. After
you clean the player? press and hold EJECT for five
seconds
to reset the CLN indicator. The radio will
display
--- to show the indicator was reset.
3-14
ProCarManuals.com

If the disc comes back out and ERR appears on the
display, it could be that:
The disc is upside down.
It is dirty, scratched or wet.
There’s too much moisture in the air. (Wait about an
hour and try again.)
You are driving on a very rough road.
Please contact your dealer
if any error recurs or cannot
be corrected.
TAPE AUX: With a disc loaded in the player and the
radio playing, press this button once to play the compact
disc.
To return to playing the radio, press AM-FM. If
both a cassette tape and CD are loaded, press TAPE
AUX to switch between the tape and compact disc.
SEEK: Press the left arrow while playing a CD to go
back to the start of the current track. It will go back to
the current track if more than eight seconds have played.
Press
the left arrow again to go to previous tracks. Press
the right arrow
to go to the next higher track on the disc.
PREV (1): Press this button to go back to the start of the
current track if more than eight seconds have played.
Press PREV again to
go to the previous track on the disc.
PROG (2): This button is active only when you have
the 12-disc changer.
NEXT (3): Press this button to advance to the next track
on the disc.
REV (4): Press and hold this button to quickly reverse
within a track (song). As the CD reverses, elapsed time
will be displayed
to help you find the correct passage.
FWD (6): Press and hold this button to quickly advance
within a track (song). As the CD advances, elapsed time
will be displayed to help you find the correct passage.
RANDOM: Press P.SCAN to enter the random play
mode. RANDOM
will appear on the display. While in
this mode, the tracks on the discs will be played in
random order. If you press SEEK, PREV or NEXT
while
in the random mode, the PREV or NEXT track
will be scanned randomly. Press P.SCAN again
to turn
off RANDOM and return to normal operation.
EJECT: Press this button on the remote player to eject
a compact disc.
RECALL: Press this button to see what track is
currently playing. Press RECALL again within
five
seconds to see how long the track has been playing.
When
a new track starts to play, the track number will
also appear. Press RECALL
a third time and the time of
day will be displayed.
3-16
ProCarManuals.com