1994 GMC SIERRA service

GA!
-/I
Item
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21 23
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*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.
7-10
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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
7-11
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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
7-12
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GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS
- MAINTENANCE SCHEDULE lh- (continued)
THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (1 00 000 km) ARE TO BE
DONE AFTER 60,000 MILES AT THE SAME INTERVALS.
TO407
7-13
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DIESEL ENGINES - MAINTENANCE SCHEDULE yf
20 Air Intake System InspectionAB t t
21 Thermostatically Controlled Engine
Cooling Fan CheckAW-Every
t t
12 Months or
Inspection*
22 Exhaust Pressure Regulator Valve
23 Tire and Wheel Rotation**
t
24 Drive Axle Service** t t t +
25 Brake Systems Inspection**
A Change filter every 15,000 miles (24 000 km), except when op\
erating
in dusty
conditions. Dusty conditions may require more frequent filter re\
placement. Extreme
dust and dirt operating conditions (off-road), may require the air \
filter to be checked as
often as every 300 miles (483 km) and replaced as necessary.
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in this section.
A A Noise Emission Control Service
1 Applicable only to vehicles sold in the United States
t This maintenance schedule applies to all diesel engines available.
T0408/T0908
7-14
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DIESEL ENGINES - MAINTENANCE SCHEDULE
(continued)
If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services”’\

in this section, use Maintenance Schedule II (e).
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.
T0409R0909
7- 15
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DIESEL ENGINES - MAINTENANCE SCHEDULE I@
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in this section.
A A Noise Emission Control Service
Applicable only
to vehicles sold in the United States.
t This maintenance scheduled applies to all diesel engines available.
TO41 OR091
0
7-16
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DIESEL ENGINES - MAINTENANCE SCHEDULE lh
(continued)
If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services”\

in this section, use Maintenance Schedule
II (a).
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.
TO41
1Tr0911
7- 17
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