1997 CHEVROLET TAHOE gas type

Downloaded from www.Manualslib.com manuals search engine Be sure the posted octane is at least 87. If the octane is
less than
87, you may get a heavy knocking noise when
you drive. If it’s bad enough, it can damage your engine.
If you’re using fuel rated at
87 octane or higher and you
still hear heavy knocking, your engine needs service.
But don’t worry if you hear a little pinging noise when
you’re accelerating or driving up a hill. That’s normal,
and you don’t have to buy a higher octane fuel to get rid
of pinging. It’s the heavy, constant knock that means
you have a problem.
If your vehicle is certified to meet California Emission
Standards (indicated on the underhood tune-up label),
it is designed to operate on fuels that meet California
specifications. If such fuels are not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp on your instrument
panel may
turn on and/or your vehicle
may fail a smog-check test. If this occurs, return to your
authorized GM dealer for diagnosis to determine the
cause of failure. In the event it is determined that the
cause of the condition is the type of fuels used, repairs
may not be covered by your warranty.
Some gasolines that are not reformulated for low
emissions contain an octane-enhancing additive called
methylcyclopentadlenyl manganese tricarbonyl (MMT);
ask your service station operator whether or not his fuel
contains
MMT. General Motors does not recommend the
use of such gasolines. If fuels containing MMT are used,
spark plug life may be reduced and your emission
control system performance may be affected. The
malfunction indicator lamp on your instrument panel
may turn on. If this occurs, return to your authorized
GM dealer for service.
6-4

Downloaded from www.Manualslib.com manuals search engine When you put the cap back on, turn it to the right
(clockwise) until you hear a clicking sound.
Make sure
you fully install the cap.
NOTICE:
If you need a new cap, be sure to get the right
type. Your dealer can get one for you.
If you get
the wrong type, it may not
fit or have proper
venting, and your fuel tank and emissions system
might be damaged.
Checking Things Under the Hood
'
A CAUTION:
If your vehicle has air conditioning, the auxiliary
engine fan under
the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing and tools
away from any
underhood electric fan.
A CAUTION:
I I
Things that burn can get on hot engine parts and
start a fire. These include liquids like gasoline or
diesel fuel, oil, coolant, brake fluid, windshield
washer and other fluids, and plastic or rubber.
You or others could be burned. Be careful not to
drop or spill things that will burn onto a hot
engine.
6-8

Downloaded from www.Manualslib.com manuals search engine Bulb Replacement
Before you replace any bulbs, be sure that all the lamps
are off and the engine isn’t running. For the proper bulb
-
lbs” in the
type,
see “Replacement Bu
Halogen Bulbs
A CAUTION:
Index.
-
Halogen bulbs have pressurized gas inside and
can burst if
you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
1
Sealed Beam Headlamps
1. Remove the
four screws from
the headlamp retainer.
2. Pull the headlamp out and remove the retainer.
6-37

Downloaded from www.Manualslib.com manuals search engine NOTICE: (Continued)
Use another type of traction device only if its
manufacturer recommends it for use on your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions.
To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device if it’s contacting your vehicle, and don’t spin
your wheels.
If you do find traction devices that will fit, install
them on the rear tires.
If you have a tire size other than P26975Rl6, use
tire chains only where legal and only when you
must. Use chains that are the proper size for your
tires. Install them on the tires of the rear axle.
Don’t use chains on the tires of the front axle.
Tighten them
as tightly as possible with the ends
securely fastened. Drive slowly and follow the chain
manufacturer’s instructions.
If you can hear the
chains contacting your vehicle, stop and retighten
them.
If the contact continues, slow down until it
stops. Driving too fast or spinning the wheels with
chains on
will damage your vehicle.
Appearance Care
Remember, cleaning products can be hazardous. Some
are toxic. Others can burst into flame
if you strike a
match or get them on a hot part of the vehicle. Some are
dangerous if
you breathe their fumes in a closed space.
When you use anything from a container to clean your
vehicle, be sure to follow the manufacturer’s warnings
and instructions. And always open your doors or
windows when you’re cleaning the inside.
Never use these to clean your vehicle:
Gasoline
Benzene
Naphtha
0 Carbon Tetrachloride
Acetone
Paint Thinner
Turpentine
Lacquer Thinner
Nail Polish Remover
They can all
be hazardous -- some more than
others
-- and they can all damage your vehicle, too.
6 ‘2

Downloaded from www.Manualslib.com manuals search engine Capacities and Specifications
Please refer to “Recommended Fluids and Lubricants”
in the Index for more information.
Type
RPO Code
VIN Code
Fuel System
Engine Identification -- Gasoline Engines
Engine “VORTEC” “VORTEC”
5700 7400
V8 V8
L3 1 L29
R J
SFI* SFI*
*Sequential Fuel Injection
Wheels and Tires
MODEL DESCRIPTION
C 1500 5 bolts ( 14 mm)
K 1500, 6 bolts (14 mm)
C-IS
2500
TORQUE
(190 Nam)
(190 N-m) 140 lb-ft
140 lb-ft
C-K 2500 8 bolts ( 14 mm) 140 lb-ft
(190 N-m)
Tire Pressure See the Certificationmire label on
the rear edge of the driver’s door
or the incomplete vehicle document in the cab.
6-69

Downloaded from www.Manualslib.com manuals search engine Normal Maintenance Replacement Parts -- Gasoline Engines
Replacement part numbers listed in this section are based on the latest information available at the time of printing,
and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when
it was
built, or if you have any questions, please contact your GM truck dealer.
Engine
“VORTEC” 5700
VIN R
Oil Filter AC Type PF1218f
Air Cleaner Filter AC Type A1300C
Spark Plugs
AC Type 4 1-932
Spark Plug Gap 0.060
in. (1.52 mm)
Fuel Filter AC Type GF626
Wiper Blades (Front) GM Part No. 22154886
Wiper Blade Type (Front) Trico
Wiper Blade Length (Front) 18 inches (45.0 cm)
Wiper Blade (Rear) GM Part
No. 22154396
Wiper Blade Type (Rear) Trico
Wiper Blade Length (Rear) 14 inches (35.5 cm)
“four-Wheel-Drive Vehicles
-- use a PF52 oil filter.
‘VORTEC” 7400
J
AC Type PF1218
AC Type A1300C AC Type 41-932
0.060 in. (1.52 mm)
AC Type GF626
GM Part
No. 22154886
Trico
18 inches
(45.0 cm)
GM Part No. 22154396
Trico
14 inches (35.5 cm)

Downloaded from www.Manualslib.com manuals search engine Fuel Tank Capacity (Approximate)
TYPE QUANTITY
GasolineDiesel
Utility
- Standard
Suburban
- Standard
30 Gallons (1 13 L)
42 Gallons (159 L)
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used.
If you’re not sure, ask your GM dealer.
See refrigerant charge label under the hood for charge
capacity information and requirements.
6-72