GMC SIERRA 1994 Owners Manual

Tf you are skilled enough to do some work on your vehicle, you will
probably want to get the service information
GM publishes. For information
on how
to obtain various service publications for your vehicle, see “Service
Publications”
in the Index. You will find a list of publications and an order
form
in the back of the book.
Scheduled Maintenance Services
This part tells you the maintenance services that you should have done and
the times you should schedule them. Your
GM dealer knows your vehicle
best and wants you to be happy with
it. If you go to your dealer for your
service needs, you’ll know that GM-trained and supported service people
will perform the work using genuine
GM parts.
These schedules are for vehicles that:
0 carry passengers and cargo within the recommended limits. You will
find these limits on your vehicle’s Certification Label. See “Loading
Your Vehicle’’ in the Index.
are driven on regular road surfaces, and within legal driving limits, as
described in Section 4 “Your Driving and the Road.”
0 are driven off-road in the recommended manner. See “Off Road
Driving With Your Four-wheel Drive Vehicle”
in the Index.
0 use the recommended fuel. See “Fuel” in the Index.
Selecting the Proper Maintenance Services
To find the proper maintenance schedule for your vehicle, you must know
two things. What engine your vehicle has, and how you
use your vehicle.
Your engine type will tell
you which chart to use, and your driving
conditions will tell
you which schedule to use. ’The charts are found later in
this section.
Selecting the Proper Maintenance Chart
Your engine type (Gasoline or Diesel) and its emissions classification (Light
Duty or Heavy Duty Emissions) will
tell you which maintenance chart to
use. Find your Vehicle Identification Number (VIN), and look at the eighth
character
to see what your engine code is. Then use the following Engine
Emissions Classifications tables
to find your emissions classification.
Your VIN is on the plate on the top left corner of your instrument
panel, the Certification Label and on the Service Parts Identification
Label. See “Vehicle Identification Number’’
in the Tndex.
If your engine has more than one emissions classification, look at your
Certification Label to see what your Gross Vehicle Weight Rating
(GVWR)
is. See “Loading Your Vehicle” in the Index.
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Engine Emissions Classification - Gas Engines
Engine
Type
VIN
Fuel System
Emissions
5.0L
V8
H
TBIT
LD
*Light Duty Emissions with
8500 GVWR and below or:
:%*Heavy Duty Emissions with 8501 GVWR and above
+Throttle Body Injection
Engine Emissions Classification - Gas Engines (cont.)
Engine
Type
VTN
Fuel System
Emissions
5.7L
V8
K
TBTT
LD*/HD*'k
7.4L
V8
N
TBIY
LD*/HD**
*Light Duty Emissions with
8500 GVWR and below or:
**Heavy Duty Emissions with 8501 GVWR and above
?Throttle Body Injection
Engine Emissions Classification - Diesel Engines
Engine
Type
VIN
Fuel System
Emissions
6.5L
V8
P
Diesel LD
6.5L
V8
S
Turbo Diesel LD
6.5L
V8
F
Turbo Diesel
HD
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Selecting the Proper Maintenance Schedule
Here is how to tell which schedule to follow once you find the proper
maintenance chart
to use.
MAINTENANCE SCHEDULE I
Is any one of these true for your vehicle?
Most trips are less than 4 miles (6 kilometers.)
Most trips are less than 10 miles ( 16 kilometers), and the outside
temperatures are below freezing.
The engine is at low speed most of the time (as in door-to-door
delivery, stop-and-go traffic, or commercial use).
You operate in dusty areas or off-road frequently.
You tow a trailer.
If any one (or more) of these is true for your driving, follow Schedule I.
Schedule I is shown by a plus sign (+) on the chart.
MAINTENANCE SCHEDULE I1
Follow Schedule I1 ONLY if none of the above conditions are true.
Schedule
TI is shown by a dot (0) on the chart.
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GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS
- MAINTENANCE SCHEDULE ft
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in the Index
$ The California Air Resources Board has determined that the fail\
ure to perform this
maintenance item will not nullify the emission warranty or limi\
t recall liability prior to the
completion of vehicle useful life. General Motors, however, urge\
s that all recommended maintenance services be performed at the indicated intervals and the maintenance be
recorded.
t To determine the emissions classification of your engine, refer to “Selecting the Proper
Maintenance Chart” in this section.
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GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS
- MAINTENANCE SCHEDULE 13. (continued)
If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services”
in this section, use Maintenance Schedule
II (e).
-HE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
)ONE AFTER 60,000 MILES AT THE SAME INTERVALS.
’0402R0902
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GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS
- MAINTENANCE SCHEDULE 113.
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in the Index.
$ The California Air Resources Board has determined that the fail\
ure to perform this
maintenance item will
not nullify the emission warranty or limit recall liability prior to the
completion of vehicle useful life. General Motors, however, urges that all re\
commended
maintenance services be performed at the indicated intervals and\
the maintenance be
recorded.
t To determine the emissions classification of your engine, refer to “Selecting the Proper
Maintenance Chart” in this section.
T0403/T0903
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GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS
- MAINTENANCE SCHEDULE I@ (continued)
If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services”
in this section,
use Maintenance Schedule II (e),
I I I I I
THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
DONE AFTER 60,000 MILES AT THE SAME INTERVALS.
T0403alT0903a
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GA!
-/I
Item
No.
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18
19
20
21 23
24
25
*I ** <
AI
t1
F
TO404
;OLINE ENGINES WITH HEAVY DUTY EMISSIONS
IAINTENANCE SCHEDULE
If your driving conditions meet those specified in “Scheduled Maintenance Services’’
in this section (or see Index), use Maintenance Schedule
I (t).
n Emission Control Service
ee “Explanation
of Scheduled Maintenance Services” in the Index.
Noise Emission Control Service
pplicable only
to vehicles sold in the United States
2 determine the emissions classification of your engine, refer to “Selecting the Proper
laintenance Chart” in this section.
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THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
DONE AFTER
60,000 MILES AT THE SAME INTERVALS.
TO405
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GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS
- MAINTENANCE SCHEDULE Iff
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in the Index.
A A Noise Emission Control Service
V Applicable only to vehicles sold in the United States
t To determine the emissions classification of your engine, refer to “Selecting the Proper
Maintenance Chart” in this section.
TO406
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