1998 GMC ENVOY engine overheat

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A CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn
you badly.
With the coolant recovery tank, you
will almost
never have to add coolant
at the radiator. Never
turn the radiator pressure cap
-- even a
little
-- when the engine and radiator are hot.
Add coolant mixture at the recovery tank, but be careful
not to spill it.
A CAUTION:
I
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn
if the engine parts are hot
enough. Don’t spill coolant on
a hot engine.
Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant
loss and possible engine damage
from overheating. Be sure the arrows on the cap
line
up with the overflow tube on the radiator
filler neck.
6-24
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Engine (Continued) .............................. 6-9
Exhaust
..................................... 2-24
FanNoise
................................... 5-20
Identification
................................ 6-54
OilLevelCheck
.............................. 7-39
Overheating
................................. 5-11
Specifications
................................ 6-60
Engine Compartment Fuse Block
.................. 6-58
Engineoil
.................................... 6-10
Adding
..................................... 6-11
Additives
................................... 6-13
Checking
................................... 6-11
Kindtouse
................................. 6-12
Pressure Gage
................................ 2-69
Used
....................................... 6-14
When to Change
.............................. 6- I3
Exhaust, Engine
................................ 2-24
Exit Lighting
.................................. 2-39
Express-Down Window
.......................... 2-29
Fabric Cleaning
............................... 6-46
Filling
a Portable Fuel Container .................... 6-7
FillingYourTank
................................ 6-5
Fi 1 ter
Air
........................................ 6-14
Remote Oil .................................. 6- 14
Finish Care .................................... 6-5 1
Finish Damage ................................. 6-52
Running While
Parked
......................... 2-25
Starting
..................................... 2-15
Engine Coolant
................................. 6-2 1
FirstGear ..................................... 2-20
Flashers. Hazard Warning
......................... 5-2
Flat Tire. Changing
............................. 5-21
Fluids and Lubricants
............................ 7-4.5
FogLampSwitch ............................... 2-38
Foreign Countries. Fuel ........................... 6-5
Four-wheel Drive
......................... 2-26. 6-20
French Language Manual 11
FrontAxle .................................... 6-21
Front Reading Lamps
....................... 2.39. 2.43
Front Storage Area .............................. 2-45
FrontTowing
................................... 5-9
Filling a Portable Container
...................... 6-7
Filling Your Tank
.............................. 6-5
Foreign Countries .............................. 6-5
Engine Compartment
.......................... 6-58
Instrument Panel
............................. 6-56
Fuses and Circuit Breakers
....................... 6-55
Gages
.. ...........................
Front Turn Signal Lamp Bulb Replacement .......... 6-33
Fuel
.......................................... 6-3
Cage
....................................... 2-72
Fuse Block
Engine Coolant Temperature
.................... 2-66
Fuel
....................................... 2-72
Engine Oil Pressure ........................... 2-69
GasCap
....................................... 6-5
Gate A-jar Light ................................ 2-71
GAWR
....................................... 4-40
Gear
Positions ................................. 2-18
9-4
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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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