1993 GMC SIERRA oil level

T-
K2613
To Check Engine Oil: Pull out the dipstick and clean it with a paper towel
or a cloth, then push it back in all the way. Remove it again, keeping the tip
lower.
When to Add Oil: If the oil is at or below the ADD line, then you’ll need to
add some oil. But you must use the right kind. This part explains what kind\

of oil to use. For crankcase capacity, see “Capacities and Spec\
ifications’’ in
the Index.
Don’t add too much oil. If your engine has so much oil that the oil level
gets above the proper operating range, your engine could
be damaged. I
I
w
ii
I
- “‘I
. ..
Ll
6 -”
i f f i
w
K2395
6-27
ProCarManuals.com

r
Service & Appearance Care
Just fill it enough to put the level somewhere in the proper operating range.
Push the dipstick all the way back in when you’re through.
I’ I
What Kind of Oil to Use:
Look for these two things:
CElSG
K2396
I’ : .I
For SAE 15W-40 or SAE 1OW-30, CE must be on the oil container. For
SAE
30, CD must be there. These may be listed alone or with letters,
such as
CEISG, CE/SG/SF, SGICD, etc. These letters show the
American Petroleum Institute (API) levels
of qualijr.
NOTICE
If you use oils that don’t have these designations, you can cause engine
damage which
is not covered by your warranty.
6-28
ProCarManuals.com

Automatic Transmission Fluid
When to Check and Change:
A good time to check your automatic transmission fluid level is when the
engine oil is changed. Refer
to the Maintenance Schedule to determine when
to change your fluid. See "Scheduled Maintenance Services" in the \
Index.
How to Check:
Because this operation can be a little difficult, you may choose to have this
done at a General Motors dealership Service Department.
If you
do it yourself, be sure to follow all the instructions here, or you could
get a false reading on the dipstick.
I Too much or too little fluid can damage your transmission. Too much can
nean that some of the fluid could come out and fall on hot engine parts,
itarting
a fire. Be sure to get an accurate reading if you check your
ransmission ftuid.
Wait at least
30 minutes before checking the transmission fluid level if you
have been driving:
When outside temperatures are above 90°F (32°C).
At high speed for quite a while.
In heavy traffic-especially in hot weather.
While pulling a trailer.
To get the right reading, the fluid must be at normal operating temperature,
which is 180°F
to 200°F (82°C to 93°C).
To check the transmission fluid hot: Get the vehicle warmed up by driving
about
15 miles (24 km) when outside temperatures are above 50°F (1 0°C). If
it's colder than
50°F (lO°C), drive the vehicle in D (3rd gear) until the engine
temperature gage moves and then remains steady for ten minutes. Then
follow the hot check procedures.
To check transmission fluid cold: A cold check is made after the vehicle
has been sitting for eight hours or more with the engine
off and is used only
as a reference. Let the engine run at idle for five minutes
if outside
temperatures are 50°F (10°C) or more.
If it's colder than 50°F (lO"C), you
may have
to idle the engine longer. A hot check must follow when fluid is
added during a cold check.
6-33
ProCarManuals.com

*
Senrice & Appearance Care
Manual Transmission Huld
When to Check:
the fluid in your manual transmission doesn't require changing.
How to 'Check:
Because this operation can be a :little difficult, you may cho\
ose to have this
done at your dealership Service Department.
t A good time to have it checked is when .the engine oil is changed. However,
If you do it yourself, be sure to follow' all the instructions here, or you could
get a false reading..
. . .. . . ... -
Too much or too little fluid can damage your transmission. Too much can
mean that some of the fluid could come out and fall on hot engine parts,
starting a fire. Be sure
to get an accurate reading if you check your
transmission fluid.
Check the fluid level only when your engine is
off, the vehicle is parked on a
level place and the transmission is cool enough for you to re\
st your fingers
on the transmission case.
Then, follow these steps:.
~ ~~ ~
1. Remove the filler plug.
K2471
2. Check that the lubricant level is up to the bottom of the filler- plug hole.
3. If the fluid level is good, install the plug and be sure it is fully seated. If
the fluid level is low, add more fluid as described in the next steps.
6-36
ProCarManuals.com

1 CAUTION
4 Adding only plain water to your cooling system can be dangerous.
Plain water, or some other liquid like alcohol, can boil before th(
)per coolant mix will. Your vehicle’s coolant warning system is set
for the proper coolant mix. With plain water or the wrong mix\
, your
engine could get too hot but you wouldn’t get the overheat warning.
Your engine could catch fire and you or others could be burned. Use
a
50/50 mix of clean water and a proper antifreeze.
NOTICE
If you use an improper coolant mix, your engine could overheat an\
d 1:
badly damaged. The repair cost wouldn’t be covered by your warranty. 1
much water in the mix can freeze and xk +?e t line radiator, heater
core and other parts.
Some conditions, such as air trapped in the cooling system, can affect the
coolant level in the radiator. Check the coolant level when the engine is cold
and follow the steps under “Adding Coolant” for the prope\
r way to add
coolant.
If you have the low coolant warning system, refer to the General Motors
Service Manual or see your dealer for the proper coolant
fill procedure. (To
purchase a Service Manual, see “Service Publications’’ in the Index.) Using
the wrong
fill procedure can cause a low coolant warning indication.
If you have to add coolant more than four times a year, have your dealer
check your cooling system.
If you use the proper coolant, you don’t have to add extra inhibitors or
additives which claim to improve
the system. These can be harmful.
-
NOTICE .I
6-43
ProCarManuals.com

Service & Appearance Care
Cooling Systen
VIN
ENGINE
K 5.7L
H 5.0L
Z 4.3L
CODE
~13500
H.D.
6.2L C
6.2L
J
6.5L F
7.4L
N
w/3500
H.D.
Capacity
QUA
Without NC
10.9 Quarts (10.3 Liters)
17.5 Quarts (16.5 Liters)
17.5 Quarts (1 6.5 Liters)
26.5 Quarts (25 Liters)
25 Quarts (23.5 Liters)
25 Quarts (23.5 Liters)
26.5 Quarts (25 Liters) 23 Quarts (22 Liters)
26.5 Quarts (25 Liters)
ITITY*
With NC
10.9 Quarts (10.3 Liters)
18 Quarts (17 Liters)
18 Quarts (17 Liters)
27 Quarts (25.5 Liters)
25 Quarts (23.5 Liters)
25 Quarts 123.5 Liters)
26.5 Quarts (25 Liters)
25 Quarts (23.5 Liters)
28.5 Quarts (27 Liters)
*All quantities are approximate.
*After refill, the level
MUST be checked as outlined under “Engine Cooling
System” in Section
5.
TO036
Crankcase Capacity
ENGINE
5.0L
With Filter
Without Filter VIN CODE
7 Quarts (6.5 Liters) - ct 6.2L
5 Quarts (4.8 Liters) 4 Quarts (3.8 Liters) H
6.2L Jt - 7 Quarts (6.5 Liters)
6.5L
*All quantities are approximate. 7
Quarts (6.5 Liters)
- Ft
*After refill, the level MUST be checked as outlined under “Engine Oil
4.3L
5 Quarts (4.8 Liters)
4 Quarts (3.8 Liters) K 5.7L**
4.5 Quarts (4.3 Liters)
4 Quarts (3.8 Liters) Z
7.4L** 7
Quarts (6.6 Liters)
6 Quarts (5.7 Liters) N
And Filter Recommendations” in Section 5.
**Add one additional quart for C3500 HD Models.
toil filter should be changed at
EVERY oil change.
TO1 79
6-96
ProCarManuals.com

Scheduled Maintenance Services
Explanation Of Scheduled Maintenance Services
Below are explanations of the services listed in the maintenance charts.
The proper fluids and lubricants to use are listed in this section. Make sure
whoever services your vehicle uses these. All parts should be \
replaced and
all necessary repairs done before you or anyone else drives the ve\
hicle.
1.
ENGINE OIL AND OIL FILTER CHANGE* -ALWAYS USE SG OR
SGKE QUALITY, ENERGY CONSERVING II OILS OF THE PROPER
VISCOSITY. To determine the preferred viscosity oil for your vehicle’s
engine (e.g. SAE 5W-30 or 10W-30), see “Engine Oil” in the Index.
2. CHASSIS LUBRICATION -Lubricate the front suspension, king pin
bushings, steering linkage, transmission, and transfer case shift\
linkage,
parking brake cable guides, propshaft splines (2 wheel drive), brake
pedal springs, and clutch pedal springs at the intervals specified.
If you have a 3500 HD, lubricate the king pins and king pin bushings
every 1,500 miles
(2500 km) for Maintenance Schedule 1, or every 3,000
(5000 km) for Maintenance Schedule 2.
Ball joints and king pin bushings should not be lubricated unless their
temperature is
10°F (-12”C), or higher. When the weather is cold, let
them warm up before lubrication or they could be damaged.
Also, be sure to check
all the vehicle fluid levels at this time.
3.
CLUTCH FORK BALL STUD LUBRICATION -Lubricate the clutch fork
ball stud through the fitting on the clutch housing. Lubricant must be
added “sparingly” to the fitting, as only.
0066 Ib. (.003 kg) is required to
lubricate the ball stud surface.
Do not add lubricant more often than the
intervals in the Maintenance Charts.
Too much lubricant will damage
the clutch assembly.
4. ENGINE IDLE SPEED ADJUSTMENT (DIESEL ENGINES)* -Adjust to
the specifications shown on the underhood label. You must use
calibrated test equipment.
5. COOLING SYSTEM SERVICE* -Drain, flush and refill system with new
coolant. See “Engine Coolant’’ in the Index for the proper coolant and
mixture to use in your vehicle.
Also inspect the hoses and replace them
if they are cracked, swollen, or
deteriorated. Tighten all hose clamps (except constant tension \
clamps).
Remove debris and clean the outside
of the radiator and air conditioning
condenser. Wash the radiator neck.
To ensure proper operation, pressure
test the radiator and cap.
* An Emission Control Service
7-1
8
ProCarManuals.com

23. EXHAUST PRESSURE REGULATOR VALVE INSPECTION* -Check that
the valve works properly. Correct any binding. Inspect hoses fo\
r cracks, chafing or decay. Replace parts as needed.
24.
TIRE AND WHEEL ROTATION AND INSPECTION -For proper wear
and maximum tire life, rotate tires at the first
6,000 miles (1 0 000
kilometers) for Schedule I (t) or 7,500 miles (12 500 kilometers) for
Schedule
II (.) and then every 15,000 miles (25 000 kilometers)
thereafter. Follow the instructions and patterns shown in Section 6.
Check tires for uneven wear or damage.
If irregular or premature wear is
apparent, check wheel alignment. Also, check for damaged wheels.\
See
“Tires” in the Index for more information.
For dual wheels, whenever the vehicle, wheels, or fasteners are new,
have the wheel fastener torque set at the first 100,
1,000 and 6,000
miles (160, 1600 and 10
000 km).
For 3500 H.D. Models, block the tires opposite those being removed to
keep the vehicle from rolling.
25.
DRIVE AXLE SERVICE -Check readfront axle fluid level and add as
needed. Check constant velocity joints and axle seals for leaki\
ng.
Locking differential-Drain fluid at first oil change and refill. Check
fluid level and add as needed at subsequent oil changes.
In dusty
areas, or trailer towing applications drain fluid at every 15,0\
00 miles
(24 135 kilometers) and refill$
every oil change. In dusty areas, or trailer towing applications, drain
fluid every 15,000 miles
(24 135 kilometers) and refi1l.t
More frequent lubrication may be required on heavy-duty or off-road
use.
Standard differential -Check fluid level and add as needed at
26.
BRAKE SYSTEM INSPECTION -When the engine oil is changed,
inspect the lines and hoses for proper hookup, binding, leaks, \
cracks,
chafing, etc. Check the parking brake adjustment, and the fluid level in
the master cylinder.
A low fluid level can indicate worn disc brake pads
which may need to be sewiced.t
*An Emission Control Service
tA fluid
loss in these systems may indicate a problem. Have them
inspected and repaired at once.
7-2
1
ProCarManuals.com