Page 1 of 384

yellowblue
i
The 1999 GMC Envoy Owner's Manual
1-1 Seats and Restraint SystemsThis section tells you how to use your seats and safety belts properly. It also explains the air bag system.
2-1 Features and ControlsThis section explains how to start and operate your vehicle.
3-1 Comfort Controls and Audio SystemsThis section tells you how to adjust the ventilation and comfort controls and how to operate your audio system.
4-1 Your Driving and the RoadHere you'll find helpful information and tips about the road and how to drive under different conditions.
5-1 Problems on the RoadThis section tells you what to do if you have a problem while driving, such as a flat tire or overheated engine, etc.
6-1 Service and Appearance CareHere the manual tells you how to keep your vehicle running properly and looking good.
7-1 Maintenance ScheduleThis section tells you when to perform vehicle maintenance and what fluids and lubricants to use.
8-1 Customer Assistance InformationThis section tells you how to contact GMC for assistance and how to get service and owner publications.
It also gives you information on ªReporting Safety Defectsº on page 8-10.
9-1 IndexHere's an alphabetical listing of almost every subject in this manual. You can use it to quickly find
something you want to read.
ProCarManuals.com
Page 7 of 384
1-
yellowblue
1-1
Section 1 Seats and Restraint Systems
Here you'll find information about the seats in your vehicle and how to use your safety belts properly. You can also
learn about some things you should not do with air bags and safety belts.
1
-2 Seats and Seat Controls
1
-7 Safety Belts: They're for Everyone
1
-11 Here Are Questions Many People Ask About
Safety Belts
-- and the Answers
1
-12 How to Wear Safety Belts Properly
1
-12 Driver Position
1
-19 Safety Belt Use During Pregnancy
1
-20 Right Front Passenger Position
1
-20 Air Bag System
1
-28 Rear Seat Passengers1
-31 Rear Safety Belt Comfort Guides for
Children and Small Adults
1
-34 Center Rear Passenger Position
1
-35 Children
1
-38 Child Restraints
1
-49 Larger Children
1
-52 Safety Belt Extender
1
-52 Checking Your Restraint Systems
1
-53 Replacing Restraint System Parts
After a Crash
ProCarManuals.com
Page 8 of 384
yellowblue
1-2
Seats and Seat Controls
This section tells you about the seats -- how to adjust
them, and fold them up and down.
Power Seats
Horizontal Control: Raise the front of the seat by
raising the forward edge of the button. Lower the front
of the seat by lowering the forward edge of the button.
Move the seat forward by moving the whole button
toward the front of the vehicle.
Raise the rear of the seat by raising the rear edge of the
button. Lower the rear of the seat by lowering the rear
edge of the button. Move the seat rearward by moving
the whole button toward the rear of the vehicle.
Moving the whole button up or down raises or lowers
the whole seat.
Vertical Control: Move the reclining front seatback
rearward by moving the button toward the rear of the
vehicle. Move the seatback forward by moving the
button toward the front of the vehicle.
ProCarManuals.com
Page 10 of 384

yellowblue
1-4
3. To program your keyless entry transmitter, press the
UNLOCK button within five seconds of
programming the memory button. You will hear a
chime to confirm programming of the transmitter.
When your vehicle is in PARK (P), push and release the
numbered memory button you just stored. The seat will
move to the set position. You will hear one chime.
Repeat Steps 1 and 2 to readjust the seat. The transmitter
need not be reprogrammed unless it needs to correspond
to the other numbered memory button.
If there is a third driver, use the seat adjuster switch to
adjust the seat.
Pressing any of the seat adjuster switches, the SET
button or pressing the desired memory button twice will
cause the seat to stop moving. If you push the numbered
button to adjust the seat and start the vehicle while the
seat is still adjusting, adjustment will pause while the
ignition is in START. Adjustment will resume after the
ignition is in RUN.Heated Front Seats
This control is located on
the side of the seat. This
feature will quickly heat the
lower cushion and lower
back of the driver and
front passenger seats for
added comfort.
Press the lower part of the switch to turn the heater on
low. Press the upper part of the switch to turn the heater
on high. Put the switch in the center position to turn the
heater off.
The passenger's safety belt must be engaged for the
heated seat feature to work on the passenger's seat.
ProCarManuals.com
Page 12 of 384

yellowblue
1-6 Rear Seats
Your vehicle has a folding rear seat which lets you fold
the seatbacks down for more cargo space.
The rear seat release handles are on the rear of the
seatbacks. Push back on the seatbacks as you pull up on
the handles. The head restraint will automatically fold
out of the way when the seatback is folded down.
To raise the seatbacks, just lift up the seatbacks and push
until they lock in the upright position. Push and pull
on the seatbacks to check that the latches have locked
in the upright position. If they haven't, have them
fixed immediately.
To return the head restraints to the upright position,
reach behind the seats and pull the head restraint up until
it locks into position.
Push and pull on the head restraints to check that they
have locked in the upright position. If they haven't, have
them fixed immediately.
The rear seat head restraints are adjustable.
Push the button located under the head restraint to raise or
lower it. Slide the adjustable head restraint up or down so
that the top of the head restraint is closest to the top of
your ears. After releasing the button, push and pull on the
head restraint to make sure it's locked in place.
ProCarManuals.com
Page 13 of 384

yellowblue
1-7
Safety Belts: They're for Everyone
This part of the manual tells you how to use safety belts
properly. It also tells you some things you should not do
with safety belts.
And it explains the air bag system.
CAUTION:
Don't let anyone ride where he or she can't wear
a safety belt properly. If you are in a crash and
you're not wearing a safety belt, your injuries
can be much worse. You can hit things inside the
vehicle or be ejected from it. You can be seriously
injured or killed. In the same crash, you might
not be if you are buckled up. Always fasten your
safety belt, and check that your passengers' belts
are fastened properly too.
CAUTION:
It is extremely dangerous to ride in a cargo area,
inside or outside of a vehicle. In a collision,
people riding in these areas are more likely to be
seriously injured or killed. Do not allow people to
ride in any area of your vehicle that is not
equipped with seats and safety belts. Be sure
everyone in your vehicle is in a seat and using a
safety belt properly.
ProCarManuals.com
Page 19 of 384
yellowblue
1-13 Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here's how to wear
it properly.
1. Close and lock the door.
2. Adjust the seat (to see how, see ªSeatsº in the Index)
so you can sit up straight.
3. Pick up the latch plate and pull the belt across you.
Don't let it get twisted.
The shoulder belt may lock if you pull the belt across
you very quickly. If this happens, let the belt go back
slightly to unlock it. Then pull the belt across you
more slowly.
4. Push the latch plate into the buckle until it clicks.
Pull up on the latch plate to make sure it is secure. If
the belt isn't long enough, see ªSafety Belt
Extenderº at the end of this section.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.
ProCarManuals.com
Page 45 of 384
yellowblue
1-39
A rear-facing infant restraint (B) positions an infant
to face the rear of the vehicle. Rear
-facing infant
restraints are designed for infants of up to about
20 lbs. (9 kg) and about one year of age. This type
of restraint faces the rear so that the infant's head,
neck and body can have the support they need in a
frontal crash. Some infant seats come in two
parts
-- the base stays secured in the vehicle and
the seat part is removable.
ProCarManuals.com