mirror GMC ENVOY 1998 User Guide

Highway Hypnosis
Is there actually such a condition as “highway
hypnosis”? Or
is it just plain falling asleep at the wheel?
Call
it highway hypnosis, lack of awareness,
or whatever.
There is something about an easy stretch
of road with
the same scenery, along with the
hum of the tires on the
road, the drone
of the engine, and the rush of the wind
against the vehicle that can make you sleepy. Don‘t let it
happen to
you! If it does, your vehicle can leave the
road in
less than CI second, and you could crash and
be injured
.
What can you do about highway hypnosis? First, be
aware that it can happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with a
comfortably cool interior.
Keep your eyes moving. Scan the road ahead and to
the sides. Check your mirrors and your
instruments frequently.
If you get sleepy, pull off the road into a rest. service
or parking area and take
a nap, get some exercise, or
both. For safety, treat drowsiness on
the highway as
an emergency.
aLL - - ountain Roads
Driving on steep hills or mountains is different from
driving
in flat or rolling terrain.
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 elljoyable. (See ”Off-Road
Driving“
in the Index for information about driving
off-road.)
4-34
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Driving with a Trailer
A CAUTION: I
0
0
0
If you have a rear-most window open and you
pull a trailer with your vehicle, carbon monoxide
(CO) could come into your vehicle. You can’t see
or smell
CO. It can cause unconsciousness or
death. (See ‘(Engine Exhaust” in the Index.) To
maximize your safety when towing a trailer:
Have your exhaust system inspected for
leaks, and make necessary repairs before
starting on your trip.
Keep the rear-most windows closed.
If exhaust does come into your vehicle
through a window in the rear or another
opening, drive with your front, main
heating or cooling system on and with the
fan on any speed. This will bring fresh,
outside air into your vehicle.
Do not use
RECIRCULATION because it only
recirculates the air inside your vehicle. (See
“Comfort Controls” in the Index.)
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
arc
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 1
would when driving your vehicle without a trailer. This
can help you avoid situations that require heavy braking
and sudden turns.
4-48
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FuseKircuit Usage
Breaker
2
3
4
8
9
10
11
12 Cigarette
Lighter, Data
Link Connector
Cruise Control Module and
Switch, Body Control Module,
Heated Seats
Gages, Body Control Module,
Instrument Panel Cluster
Interior Lights
Not Used
Power Outside Mirror, Power
Lock Relay
Courtesy Lamps, Battery
Run-Down Protection
Not Used
Turn Signal
Cluster, Engine Control Module
Parking Lamps, Power Window
Switch, Body Control Module,
Ashtray Lamp
FuseKircuit
Breaker
13
14
15
16
17
18
19
20
21
22
23
24
Usage
Auxiliary Power
Power Locks Motor
4WD Switch, Engine Controls (VCM, PCM, Transmission)
Air Bag
Front Wiper
Not Used
Radio Battery
Amplifier
HVAC
I (Automatic), HVAC
Sensors (Automatic)
Anti-Lock Brakes
Rear Wiper
Radio, Ignition
6-57
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Name
RT TRN
RR PRK
TRL PRK
LT HDLP
RT HDLP
LT HI
RT HI
FR PRK
INT BAT
ENG
I
ECM B
ABS
ECM
1
HORN
BTS
I
BIU LP
IGN E
AIC
RAP
OXYSEN
Usage
Right Turn Signal Rear
Right Rear Parking Lamps
Trailer Park Lamps Left Headlamp
Right Headlamp
Left High Beam
Right High Beam
Front Parking Lamps
I/P Fuse Block Feed
Engine SensorsISolenoids, MAP,
CAM. PURGE, VENT
Engine Control Module, Fuel Pump,
Module, Oil Pressure
Anti-Lock Brake System
Engine Control Module Injectors Horn
Brake-Transmission Shift Interlock
Back-up
Lalllps
Engine
Air Conditioning
Retained Accessory Power
Oxygen Sensor
Name
IGN B
DRL
FOG LP
IGN
A
STUD #2
PARKLP
LR PRK
IGN C
HTDSEAT ATC
RRDFOG
HVAC
TRCHMSL
RR W/W
CRANK
LD LEV
HI BEAM
HAZLP
VECHMSL
HTDMIR
STOPLP
TBC
Usage
Column Feed, IGN 2, 3,4
Daytime Running Lamps
Fog Lamps
Starting and Charging IGN
I
Accessory Feeds, Electric Brake
Parking La~nps
Left Rear Parking Lamps Starter Solenoid, Fuel Pump. PRNDL
Heated Seat
Electronic Transfer Case
Rear Defogger
HVAC System
Trailer Center High Mount Stop Light
Rear Window Wiper
Clutch Switch, NSBU Switch
Electronic Load Leveling
HID Headlamps Hazard Lamps
Vehicle Center High
Mount Stop Lamp
Heated Mirror
Stoplamps
Truck Body Computer
6-59
1
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Climate Control System ........................... 3-2
Clock. Setting
................................... 3-8
Comfort Controls
................................ 3-2
Console Mounted CD Changer
.................... 3- 18
Content Theft-Deterrent
......................... 2- I 1
Control of a Vehicle .............................. 4-6
ConvenienceNet
............................... 2-46
Convex Outside Mirror
.......................... 2-42
Coolant
.................................. 5-14. 6.21
Coolant Heater. Engine .......................... 2- 16
Courtesy Transportation ........................... 8-8
Cruise Control
................................. 2-33
Customer Assistance Information
................... 8- 1
Customer Satisfaction Procedure .................... 8-2
Compact Disc Care
............................. 3-26
Dama. ue. Finish
............................... 6-52
Damage. Sheet Metal ............................ 6-5 1
Daytime Running Lamps ......................... 2-37
Dead Battery
................................... 5-3
Defects. Reporting Safety
........................ 8- IO
Defensive Driving ............................... 4-2
Defrosting
..................................... 3-6
Dimensions. Vehicle
............................ 6-62
Dome Lamps
.................................. 2-39
DoorLocks
..................................... 2-4
Drive
........................................ 2-19
Drive Axle Service
.............................. 7-44
Defogging
..................................... 3-6 Driver Information System
....................... 2-43
Driver Position
................................. i . 12
Driving
City
........................................ 4-31
Defensive
.................................... 4-2
Drunken ..................................... 4-3
Foreign Countries
.............................. 6-5
Freeway
.................................... 4-32
Guidelines
.................................. 4-14
Hill and Mountain Roads ....................... 4-34
In a Blizzard ................................. 4-38
Night
...................................... 4-27
Off-Road
................................... 4-15
OnCurves ...................................
4-9
Rainy Conditions ............................. 4-28
Snowy and Icy Conditions
...................... 4-36
Through Deep Standing Water
................... 4-30
WetRoads
.................................. 4-28
Winter
...................................... 4-36
With
a Trailer ................................ 4-48
Driving On Grades While Towing
a Trailer ........... 4-50
Drunken Driving
................................ 4-3
Electrical Equipment. Adding
............... 3.24. 6.54
Electrical System
............................... 6-54
Electrochomic Inside Day/Night Rearview Mirror
..... 2-40
Electronic Level Control
......................... 4-42
Engine
........................................ 6-9
Coolant Heater
............................... 2-16
Coolant Level Check
.......................... 7-39
Coolant Temperature Gage ..................... 2-66
9-3
ProCarManuals.com

GloveBox .................................... 2-42
Gross Axle Weight Rating ........................ 4-40
Gross Vehicle Weight Rating ...................... 4-40
Guide en Franpis
11 .. .................................
GVWR ....................................... 4-40
Halogen Bulbs
................................ 6-32
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-5
Headlamps .................................... 2-36
Bulb Replacement
............................ 6-32
HighLow Beam Changer
...................... 2-3 1
On Reminder ................................ 2-37
Hearing Impaired. Customer Assistance
.............. 8-4
Heated Front Seats
............................... 1-3
Heated Outside Rearview Mirror ................... 2-42
High Intensity Discharge Lighting
.................. 6-3 1
Highway Hypnosis .............................. 4-34
Hill and Mountain Roads
......................... 4-34
Hitches. Trailer
................................. 4-46
Hood
.......................................... 6-8
Horn ......................................... 2-29
Hydroplaning
.................................. 4-30
Heating
........................................ 3-5
Ignition Positions
.................................... 2-14
Transmission Lock Check
...................... 7-42
Ignition Transmission Lock Check
................. 7-42
Illuminated Entry
............................... 2-39
Inflation. Tire
............................. 6-37. 7-39 Inflator
. Accessory .............................. 2-50
Inspections
Brakesystem
................................ 7-44
Engine Cooling Systetn
........................ 7-43
Exhaust Systems
............................. 7-43
Front Drive Axle Boot Seal
..................... 7-43
Steering
.................................... 7-43
Suspension
.................................. 7-43
Throttle System
.............................. 7-44
Transfer
Case ................................ 7-44
Instrument Panel
............................... 2-58
Cleaning
.................................... 6-48
Cluster
..................................... 2-60
FuseBlock
.................................. 6-56
Interior Lamps ................................. 2-39
Jacking Equipment
............................. 5-24
Jump Starting
................................... 5-3
Key
in the Ignition ............................. 2-11
Key Lock Cylinders Service
...................... 7-40
Keyless Entry System
............................ 2-6
Keys
.......................................... 2-2
Labels
Certification/Tire
............................. 4-40
Fuse
.................................. 6.56. 6.58
Safety Belt
.................................. 1-53
Service Parts Identification ..................... 6-54
Vehicle Identification Number
................... 6-54
ProCarManuals.com

Lamps ........................................ 2-36
Dome
...................................... 2-39
Exterior
.................................... 2-36
Front Reading
........................... 2.39. 2.43
Interior
..................................... 2-39
On Reminder
................................ 2-37
Leaving Your Vehicle
............................. 2-6
Leaving Your Vehicle
with the Engine Running ....... 2-22
Liftgate
........................................ 2-9
Manual Release
.............................. 2- 10
Remote Release .............................. 2- 10
Lighter ....................................... 2-49
Lights Air Bag Readiness
....................... 1-22, 2-63
Anti-Lock Brake System Warning
............ 2-66? 4-7
Brake System Warning
......................... 2-65
Charging System
............................. 2-63
CheckGages
................................ 2-71
Gate Ajar
................................... 2-7 I
LowFuel ................................... 2-72
Safety Belt Reminder
...................... 1-8.2-62
Security Warning
............................. 2-70
Service4WD
................................ 2-71
Service Engine Soon
.......................... 2-67
Loading Your Vehicle
........................... 4-40
Locking Rear Axle
.............................. 2-24
Lockout Prevention
.............................. 2-5
Lockout Switch
................................ 2-29
Locks
......................................... 2-4
Door
........................................ 2-4
Ignition Transmission Check
.................... 7-42
Key Lock Cylinder Service
..................... 7-40 Power Door
.................................. 2-5
Rear Door Security
............................. 2-5
Loss
of Control ................................ 4-13
LowFuelLight
................................ 2-72
Lubricants and Fluids
............................ 7-45
Lubrication Service
. Body ........................ 7-40
Luggagecarrier
................................ 2-48
Lumbar Controls
................................ 1-3
Maintenance Record ........................... 7-47
Maintenance Schedule
............................ 7-1
Owner Checks and Services ..................... 7-39
Periodic Maintenance Inspections
................ 7-43
Recommended Fluids and Lubricants
............. 7-45
Scheduled Maintenance Services
.................. 7-4
Long Trip/Highway
....................... 7-6.
7-27
Short TripKity
............................ 7-5. 7-7
Maintenance. Underbody
......................... 6-52
Malfunction Indicator Lamp ...................... 2-67
Manual Passenger’s Seat
.......................... 1-2
Methanol
...................................... 6-4
Mirrors
....................................... 2-40
Convex Outside
.............................. 2-42
Electrocho~nic Day/Night Inside Rearview
......... 2-40
Heated Outside Rearview
....................... 2-42
Illuminated Visor Vanity
....................... 2-50
Outside
..................................... 2-42
Model Reference
................................. vi
Mountain Roads ................................ 4-34
Multifunction Lever
............................. 2-30
Maintenance When Trailer Towing
................. 4-51
9-6
ProCarManuals.com

Net. Convenience .............................. 2-46 Over Things That Burn ........................ 2-24
Neutral
....................................... 2-19 Passing ..................................... 4-12
New Vehicle “Break-In”
......................... 2- 13 Passlock’ ..................................... 2-12
Nightvision
................................... 4-27 Payload ....................................... 4-42
Normal Maintenance Replacement Parts
............. 6-6 1 Periodic Maintenance Inspections .................. 7-43
Power
Odometer
.................................... 2-6 1
Off-Road Driving .............................. 4- 15
Off-Road Recovery
............................. 4- I 1
OnStar System ................................ 2-57
Ordering Owner and Service Publications
....... 8- I 1, 8- 12
Outside Mirror
Power Remote Control
......................... 2-41
Convex ..................................... 2-42
Overhead Console
.............................. 2-42
Oil. Engine
.................................... 6-10
Accessory Outlets ............................ 2-52
DoorLocks
................................... 2-5
Remote Control Mirror
........................ 2-41
Seat
......................................... 1-2
Steering
..................................... 4-9
Steering Fluid
................................ 6-25
Windows
................................... 2-28
Pregnancy. Use of Safety Belts
.................... 1 . 19
Problems on the Road
............................ 5-1
Publications. Service and Owner .............. 8- 1 1. 8. 12
Overheating Engine
............................. 5- 1 1
Owner Checks and Services ....................... 7-39 Radiator. Adding Coolant ....................... 5-17
Owner Publications
........................ 8- I 1. 8- 12 Radiator Pressure Cap ........................... 6-24
Radio Reception
................................ 3-23
Paint Spotting. Chemical 6-52
Park
......................................... 2-18
Shifting Into 2-21
Shifting Out
of 2-23
AtNight
2-11
Brake ...................................... 2-20
Brake Mechanism Check 7-42
Lots ....................................... 2-11
On Hills with a Trailer 4-50
Radios ........................ Cassette Tape Player ........................... 3-8
Cassette Tape Player Care 3.24. 7.39
CDChanger 3-18
Compact Disc Player 3-12
Compact Disc Player Care 3-26
Rear Seat Audio
.............................. 3-16
Setting the Clock 3-8
Theft-Deterrent Feature
........................ 3-21
Rain. Driving 4-28
................. ................................. ................................. ............................... .......................... Parking ...................... ....................................
.............................. .......................
.................................. ......................... RAP ......................................... 2-15
9-7
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