1995 CHEVROLET TAHOE ECU

Downloaded from www.Manualslib.com manuals search engine Securely attach the harness to the trailer, then tape or strap it to your
vehicle’s frame rail.
Be sure you leave it loose enough so the wiring won’t
bind or break when turning with the trailer, but not
so loose that it drags on
the ground.
Store the harness in its original position. Wrap the harness together and tie it
neatly
so it won’t be damaged.
If you do tow a trailer, your Center High Mount Stoplamp (CHMSL) may
not be properly visible from behind.
You should select a trailer with a
CHMSL on it or, if one is not available, have one installed. See your GM
dealer about how to connect your vehicle’s wiring to a trailer CHMSL.
Step-Bumper Pad
If your vehicle has a rear step bumper, it may be equipped with a rear step
pad at the center
of the bumper. Use this pad to improve footing when you
are stepping on the bumper step.
If you will be using
the bumper to tow a
trailer, you must
remove the center
cutout circle
to install
the trailer ball. You
must also remove both
outer cutouts to attach
the trailer safety
chains.
2-86

Downloaded from www.Manualslib.com manuals search engine To Lock The System:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Write down any number from 000 to 999 and keep it in a safe place.
Turn the ignition
to ACC or RUN.
Turn the radio off.
Press the
1 and 4 buttons together. Hold them down until “- - -” shows
on the display.
You are now ready to enter your secret code. Don’t wait more than 15
seconds between any of the following steps. If
you do, the radio
automatically returns
to time display and you must start the procedure
over at step
4.
Press MIN and “000” will appear on the display.
Press the MIN button again
to make the last two digits agree with your
code.
Press HR to make the first one or two digits agree with your code.
Press AMEM after
you have confirmed that the code matches the one
you wrote down. rEP appears
in the display, indicating that you need to
repeat steps
5 through 7.
Press AMEM and this time the display will show “SEC”. “SEC”
means the system is secured.
With the ignition off,
the THEFTLOCK indicator will flash.
To Unlock THEFTLOCK After a Power Loss
When battery power is reapplied to a secured radio, the radio won’t turn on
and “LOC” will appear on the display.
Enter your secret code as follows. Pause no more than
15 seconds between
steps.
1.
2.
3.
4.
5.
6.
Turn the ignition on.
Turn the radio
off.
Press MIN and “000’ will appear on the display.
Press the MIN button again
to make the last two digits agree with your
code.
Press
HR to make the first one or two digits agree with your code.
Press AMEM after
you have confirmed that the code matches the one
you wrote down.
SEC appears in the display indicating that the radio is
now operable.
3-1 8

Downloaded from www.Manualslib.com manuals search engine To Disable THEFTLOCK
I. Turn the ignition on.
2. Turn the radio off.
3. With the time showing in the display, press the 1 and 4 buttons
together. Hold them down
until "SEC" shows on the display.
You are now ready
to enter your secret code. Don't wait more than 15
seconds between any of the following steps.
4. Press MIN and "000" will appear on the display.
5. Press the MTN button again to make the last two digits agree with your
6. Press HR to make the first one or two digits agree with your code.
7. Press AMFM after you have confirmed that the code matches the one
code.
you wrote down. ~
system is unsecured (disabled).
66 " will
appear in the display, indicating that the
If the code is incorrect, "SEC" will appear in the display and the system will
still be secured. The radio will still operate
if it is secured or unsecured. If
"SEC" appears and you still want to disable the system, follow the disable
procedure again and enter the correct code.
How to Operate Your ETP AM-FM Stereo Audio
Compact Disc ATC System
3-19

Downloaded from www.Manualslib.com manuals search engine To Unlock THEFTLOCK After a Power Loss
When battery power is reapplied to a secured radio, the radio won’t turn on
and “LOC” will appear on the display.
Enter your secret code as follows. Pause
no more than 15 seconds between
steps.
1. Turn the ignition on.
2. Turn the radio off.
3. Press MIN and “000” will appear on the display.
4. Press the MIN button again to make the last two digits agree with your
code.
5. Press HR to make the first one or two digits agree with your code.
6. Press AM/FM after you have confirmed that the code matches the one
you wrote down. SEC appears in the display indicating that the radio is
now operable.
To Disable THEFTLOCK
1. Turn the ignition on.
2. Turn the radio off.
3. With the time showing in the display, press the 1 and 4 buttons
together. Hold them down until
“SEC” shows on the display.
You are now ready to enter your secret code. Don’t wait more than
15
seconds between any of the following steps.
4. Press MIN and “000” will appear on the display.
5. Press the MIN button again to make the last two digits agree with your
code.
6. Press HR to make the first one or two digits agree with your code.
7. Press AMEM after you have confirmed that the code matches the one
you wrote down. “- ” will appear in the display, indicating that the
system is unsecured (disabled).
If the code is incorrect, “SEC” will appear
in the display and the system will
still be secured. The radio will still operate if it is secured or unsecured. If
“SEC” appears and you still want to disable the system, follow the disable
procedure again and enter the correct code.
3-24

Downloaded from www.Manualslib.com manuals search engine Off-Road Driving with Your Four-wheel Drive
Vehicle
This off-road guide is for vehicles that have four-wheel drive.
Also, see “Anti-Lock Brakes”
in the Index.
If your vehicle doesn’t have four-wheel drive, you shouldn’t drive off-road
unless you’re on a level, solid surface.
Off-road driving can be great
fun. But it does have some definite hazards.
The greatest
of these is the terrain itself.
“Off-roading” means you’ve left the great North American road system
behind. Traffic lanes aren’t marked. Curves aren’t banked. There are no
road signs. Surfaces can be slippery, rough, uphill or downhill. In short,
you’ve gone right back to nature.
Off-road driving involves some new
skills. And that’s why it’s very
important that you read this guide. You’ll find many driving tips and
suggestions. These will help make your off-road driving safer and more
enjoyable.
Before You Go Off-Roading
There are some things to do before you go out. For example, be sure to have
all necessary maintenance and service work done. Check to make sure all
underbody shields (if
so equipped) are properly attached. Be sure you read
all
the information about your four-wheel drive vehicle in this manual. Is
there enough fuel? Is the spare tire fully inflated? Are the fluid levels up
where they should be? What are
the local laws that apply to off-roading
where you’ll be driving? If you don’t know, you should check with law
enforcement people in the area. Will you be
on someone’s private land? If
so, be sure to get the necessary permission.
Loading Your Vehicle for Off-Road Driving
There are some important things to remember about how to load your
vehicle.
0 The heaviest things should be on the load floor and forward of your
0 Be sure the load is secured properly, so driving on the off-road terrain
rear axle. Put
heavier items as far forward as you can.
doesn’t toss things around.

Downloaded from www.Manualslib.com manuals search engine Winter Driving
Here are some tips for winter driving:
0 Have your vehicle in good shape for winter. Be sure your engine
coolant
mix is correct.
0 You may want to put winter emergency supplies in your vehicle.
Include an ice scraper, a small brush
or broom, a supply of windshield
washer fluid, a rag, some winter outer clothing, a small shovel, a flashlight,
a red cloth, and a couple of reflective warning triangles. And,
if you will be
driving under severe conditions, include a small bag of sand, a piece of old
carpet or a couple
of burlap bags to help provide traction. Be sure you
properly secure these items
in your vehicle.
Driving on Snow or Ice
Most of the time, those places where your tires meet the road probably have
good traction.
However,
if there is snow or ice between your tires and the road, you can
have a very slippery situation. You’ll have a lot less traction or “grip” and
will need to be very careful.
4-31

Downloaded from www.Manualslib.com manuals search engine Towing a trailer requires a certain amount of experience. Before setting out
for the open road,
you’ll want to get to know your rig. Acquaint yourself
with the feel
of handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle
you are driving is now a good
deal longer and not nearly as responsive as your vehicle
is by itself.
Before
you start, check the trailer hitch and platform (and attachments),
safety chains, electrical connector, lamps, tires and mirror adjustment.
If the
trailer has electric brakes, start your vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure the brakes are working.
This
lets you check your electrical connection at the same time.
During your trip, check occasionally
to be sure that the load is secure, and
that the lamps and any trailer brakes are
still working.
Following Distance
Stay at least twice as far behind the vehicle ahead as you would when
driving your vehicle without a trailer. This can help
you avoid situations that
require heavy braking and sudden turns.
Passing
You’ll need more passing distance up ahead when you’re towing a trailer.
And, because you’re a good deal longer, you’ll need to go much farther
beyond the passed vehicle before
you can return to your lane.
Backing Up
Hold the bottom of the steering wheel with one hand. Then, to move the
trailer
to the left, just move that hand to the left. To move the trailer to the
right, move your hand to
the right. Always back up slowly and, if possible,
have someone guide
you.
Making Turns
I NOTICE:
Making very sharp turns while trailering could cause the traile\
r
to come in contact with the vehicle. Your vehicle could be
damaged. Avoid making very sharp turns while trailering.
When you’re turning with a trailer, make wider turns than normal. Do this
so your trailer won’t strike soft shoulders, curbs, road signs, trees, or other
objects. Avoid jerky or sudden maneuvers. Signal well in advance.
4-44

Downloaded from www.Manualslib.com manuals search engine Spare Tire - ZDoor Utility Model and Suburban
I
c
I
First open the tire cover, if you have one. Turn the wing nut
counterclockwise and take it, and the adapter,
off the bolt. Take the tire out
of the vehicle and remove the tire cover.
Spare Tire - &Door Utility Model
Your vehicle’s spare tire is stowed under the vehicle in an underbody carrier.
The removal
of the spare tire is covered later in this part.
Jack and Jacking Tool Storage - 2-Door Utility Model
If your 2-door utility model has a jack cover, turn the wing nut
counterclockwise and take the cover off.
To take the jack out, turn the wing nut counterclockwise and take it and the
retainer
off. Take the jack and storage box out and take the tools out of the box.
Your vehicle may have a pair
of emergency gloves secured to the jack. You
can use them when changing the tire,
or during other emergency situations.
Remember
to replace them with the jack, so you will have them handy if
needed later.
5-26