trailer GMC SIERRA 1995 Owner's Manual

What to Use
Refer to the Maintenance Schedule to determine what kind of lubricant to
use. See “Recommended Fluids and Lubricants”
in the Index.
C3 (3500 H.D.) Trucks Equipped with Dana Rear Axle
Additional rear axle scheduled maintenance is required on 3500 H.D.
models equipped with Dana rear axles when they are driven under the
following conditions:
0 Extreme loading (at or near GVWR) or trailer towing, and:
Operation above 45 mph for extended periods of time
Vehicles used
in any of these conditions require the rear axle lubricant (SAE
8OW-90 - GL-5) be changed every 3 months or 3,000 miles, whichever
comes first.
To reduce required maintenance, SAE 75W-140 synthetic gear lubricant
may be used. With the use of synthetic
SAE 75W-140 lubricant, the fluid
change intervals may be increased to 30,000 miles. Before using SAE
75W-140, it is important to drain and flush the axle with clean mineral
based (non-synthetic) axle lubricant. Fluid capacity is 4.12 qts. (3.9L).
Four- Wheel Drive
Most lubricant checks in this section also apply to four-wheel-drive
vehicles. However, they have two additional systems that need lubrication.
Transfer Case
When to Check Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant. See “Periodic Maintenance Inspections”
in the Index.
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Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from short circuits by a
combination of fuses, circuit breakers, and fusible thermal links
in the
wiring itself. This greatly reduces
the chance of fires caused by electrical
problems. See “Fuses and Circuit Breakers’’
in the Index for more
information.
Headlamps
The headlamp wiring is protected by a circuit breaker in the lamp switch.
An electrical overload will cause
the lamps to flicker on and off, or in some
cases to remain
off. If this happens, have your headlamp wiring checked
right away.
Windshield Wipers
The windshield wiper motor is protected by a clrculc DreaKer ana a ruse. 11
the motor overheats due to heavy snow, etc., the wiper will stop until the
motor cools. Although the circuit is protected from electrical overload,
overload due to heavy snow, etc., may cause wiper linkage damage. Always
clear ice and heavy snow from the the windshield before using the
windshield wipers. If the overload
is caused by some electrical problem and
not snow, etc., be sure
to get it fixed.
Power Windows and Other Power Options
Circuit breakers in the fuse panel protect the power windows and other
power accessories. When the current load is too heavy, the circuit breaker
opens and closes. This protects the circuit
until the current load returns to
normal or the problem is fixed.
Trailer Wiring Harness
The standard seven-wire trailer wiring harness is protected by an in-line
fuse in the battery feed wire. This fuse is near the junction block. See
“Trailer Wiring Harness” in the Index for more information.
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If your engine has more than one emissions classification, the classification
is determined by the Gross Vehicle Weight Rating (GVWR) of your vehicle
as shown on the Certification Label. See “Loading Your Vehicle”
in the
Index.
Once you’ve determined your engine type and,
if necessary, emissions
classification, you’ll need to decide which of the two schedules is right for
your vehicle. See Definitions for Maintenance Schedule
I and Maintenance
Schedule
I1 following.
Schedule I Definition - Gasoline Engines With Light Duty
Emissions
Follow Maintenance Schedule I if any one of these is true for your vehicle:
iII Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly
important when outside temperatures are below freezing.
0 Most trips include extensive idling (such as frequent driving in
stop-and-go traffic).
You operate your vehicle in dusty areas or off-road frequently.
0 You frequently tow a trailer.
Schedule
I should also be followed if the vehicle is used for delivery
service, police, taxi, or other commercial application.
Schedule I Intervals - Gasoline Engines With Light Duty
Emissions
Every
3,000 Miles (5 000 km) or 3 Months, Whichever Occurs First
Engine Oil and Filter Change
Chassis Lubrication
Drive Axle Service
At 6,000 Miles (10 000 km) - Then Every 12,000 Miles (25 000 km)
Tire Rotation
Every 75,000 Miles (25 000 km)
Air Cleaner Filter Inspection, if driving in dusty conditions
Front Wheel Bearing Repack
(or at each brake relining) (2WD Only)
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Every 30,000 Miles (50 000 km)
Cooling System Service (or every 24 months)
Spark Plug Replacement
Fuel Filter Replacement
Air Cleaner Filter Replacement
Front Wheel Bearing Repack
Every 50,000 Miles (83 000 km)
Automatic Transmission Service (severe conditions only)
Every 60,000 Miles (100 000 km)
Spark Plug Wire Inspection
Engine Accessory Drive Belt Inspection
Fuel Tank,
Cap and Lines Inspection
Engine Timing Check
Schedule 1 Definition - Gasoline Engines With Heavy Duiy
Emissions
I
Follow Maintenance Schedule I if any one of these is true for your vehicle:
0 Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly
important when outside temperatures are below freezing.
Most trips include extensive idling (such as frequent driving in stop and
go traffic).
You operate your vehicle in dusty areas or off-road frequently.
You frequently tow a trailer.
Schedule
I should also be followed if the vehicle is used for delivery
service, police, taxi, or other commercial application.
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Every 24,000 Miles (40 000 km)
Cooling System Service (or every 24 months, whichever occurs first)
Air Cleaner Filter Replacement
Front Wheel Bearing Repack (or at Each Brake Relining) (2-Wheel Drive
Only
1
Fuel Filter Replacement
Engine Timing Check
Thermostatically Controlled Air Cleaner Inspection
Air Intake System Inspection
Every 27,000 Miles (45 000 km)
Spark Plugs Replacement
Every 30,000 Miles (50 000 km)
Clutch Fork Ball Stud Lubrication (5-Speed Transmission with Deep-Low
Only)
Every 50,000 Miles (83 000 km)
Automatic Transmission Service
Every 60,000 Miles (100 000 km)
Spark Plug Wire Inspection
Exhaust
Gas Recirculation (EGR) System Inspection
Fuel Tank, Cap and Lines Inspection
Evaporative Emission Control System Inspection
Electronic Vacuum Regulator Valve (EVRV) Inspection
Schedule I Definition - Diesel Engines
Follow Maintenance Schedule I if any one of these is true for your vehicle:
0
0
0
0
Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly
important when outside temperatures are below freezing.
Most trips include extensive idling (such as frequent driving
in stop and
go traffic).
You operate your vehicle
in dusty areas or off-road frequently.
You frequently tow
a trailer.
Schedule I should also be followed if the vehicle is used for delivery
service. Dolice, taxi,
or other commercial application.
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Every 50,000 Miles (83 000 km)
Automatic Transmission Service
Every 60,000 Miles (100 000 km)
Crankcase Depression Regulator Valve (CDRV) System Inspection
Engine Accessory Drive Belt Inspection
Exhaust Gas Recirculation (EGR) System Inspection
(if equipped)
Exhaust Pressure Regulator Valve Inspection
Maintenance Schedule I - Gasoline Engines With
Light
Duty Emissions
The services shown in this schedule up to 60,000 miles (1 00 000 km) should
be performed after
60,000 miles (100 000 km) at the same intervals.
Footnotes
3 The California Air Resources Board has determined that the failure to
perform this maintenance item will not nullify the emission warranty or
limit recall liability prior to the completion of vehicle useful life. We,
however, urge that all recommended maintenance services be performed at
the indicated intervals and the maintenance be recorded.
:$* Drive axle service:
Locking Differential - Drain fluid and refill at first engine oil change.
At subsequent oil changes, check fluid level and add fluid
as needed. If
driving in dusty areas or towing a trailer, drain fluid and refill every
15,000 miles (25 000 km).
0 Standard Differential - Check fluid level and add fluid as needed at
every oil change.
If driving in dusty areas or towing a trailer, drain
fluid and refill every 15,000 miles (25 000 km).
More frequent lubrication may be required for heavy-duty or off-road
use.
3500 HD Models with applications requiring extreme overload/trailer
towing conditions and high speed (above
45 mph or 72 kmh)
conditions for extended periods of time must have the drive axle fluid
changed every
3,000 miles (5 000 km) or 3 months, whichever occurs
first, or must use
75W-140 synthetic fluid meeting GM specifications.
See “Recommended Fluids and Lubricants”
in this section.
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Maintenance Schedule I - Gasoline Engines With
Light Duty Emissions
48,000 Miles (80 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
0 Lubricate the front suspension, king pin bushings, steering linkage,
transmission shift linkage, transfer case shift linkage. parking brake
cable guides, rear driveline center splines, front axle propshaft splines,
brake pedal springs and clutch pedal springs. Ball joints and king pin
bushings should
not be lubricated unless their temperature is 10" F
(-12" C), or higher. When weather is cold, let the ball joints and king
pin bushings warm
up before lubrication or they could be damaged.
Perform each of the listed lubrication service items at this mileage
interval (or every
6 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.*":
DATE SERVICED BY: ACTUAL MILEAGE
50,000 Miles (83 000 km)
0 Change automatic transmission fluid and filter if the vehicle is mainly
driven under one or more of these conditions:
In heavy city traffic where the outside temperature regularly
reaches
90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery service.
[f you do not use your vehicle under an\' of these conditions, the fluid
and.filter do not require cl1crnging.
Manual transmission fluid doesn't require change.
L
DATE
SERVICED BY:
ACTUAL MILEAGE
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Maintenance Schedule II - Gasoline Engines With
Light Duty Emissions
The services shown in this schedule up to 60.000 miles ( 100 000 km) should
be performed after
60.000 miles ( 100 000 km) at the same intervals.
Footnotes
-i- The California Air Resources Board has determined that the Failure to
perform this maintenance item will
not nullify the emission warranty or
limit recall liability prior
to the completion of vehicle useful life. We,
however. urge that all recommended maintenance services be performed at
the indicated intsrkrds
and t!w rnlrinlcn;nnx be recor-ded.
0
0
0
0
Locking Differential - Drain iluid mci wi.il! :ii !.iI-st cngine oii change.
At subsequent oil changes, check fluid level and add fluid as needed. If
driving in dusty areas or towing a trailer. drain fluid and refill every
15,000 miles
(25 000 km).
Standard Differential - Check tluid level and add fluid as needed at
every engine
oil change. If--driving in dusty areas or towing a trailer.
drain fluid and refill every
15,000 miles (25 000 km).
More frequent lubrication may be required for heavy-duty or off\
-road use.
3500 HD Models with applications requiring extreme overload/trailer
towing conditions and high speed (above
45 mph or 72 km/h)
conditions for extended periods
of time must have the drive axle fluid
changed every
3,000 miles (5 000 km) or 3 months, whichever occurs
first, or must use 7SW-140 synthetic tluid meeting
GM specifications.
See "Recommended Fluids and Lubricants"
in this section.
7,500 Miles (12 500 km)
0 Change engine oil and filter (or every 12 months. whichever occurs
first).
A11 E1?7iLs.~io1I Corlti-ol Serl7ic-e.
Lubricate the front suspension, king pin bushings. steering linkage,
transmission shift linkage, transfer case shift linkage. parking brake
cable guides.
rear driveline center splines, front axle propshaft splines,
brake pedal springs and clutch pedal springs.
Ball joints and king pin
bushings should
not be lubricated unless their temperature is 10" F
(-12" C). or higher. When weather is cold, let the ball joints and king
pin bushings warm up before lubrication or they could be damaged.
Perform each of the listed lubrication service items at this mileage
interval (or every
12 months. whichever occurs first).
(ColltillltL'd)
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I
Maintenance Schedule II - Gasoline Engines With
Light Duty Emissions
I
rn
50,000 Miles (83 000 km)
0 Change automatic transmission fluid and filter if the vehicle is mainly
driven under one or more of these conditions:
0 In heavy city traffic where the outside temperature regularly
reaches
90°F (32°C) or higher.
0 In hilly or mountainous terrain.
0 When doing frequent trailer towing.
0 Uses such as found in taxi, police or delivery service.
If you do not me your vehicle under arzy of these conditions, the fluid
md.filter do
not require changing.
Manual transmission fluid doesn't require change.
I DATE I ACTUALMILEAGE I SERVICED BY: I
52,500 Miles (87 500 km)
0 Change engine oil and filter (or every 12 months. whichever occurs
first).
An Emission Control Sunlice.
[7 Lubricate the front suspension, king pin bushings, steering linkage,
transmission shift linkage, transfer case shift linkage, parking brake
cable guides, rear driveline center splines, front
axle propshaft splines,
brake pedal springs and clutch pedal springs. Ball joints and king pin
bushings should
not be lubricated unless their temperature is 10" F
(-12" C), or higher. When weather is cold, let the ball joints and king
pin bushings warm up before lubrication or they could be damaged.
Perform each of
the listed lubrication service items at this mileage
interval (or every
12 months, whichever occurs first).
(Continued)
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I
Maintenance Schedule II - Gasoline Engines With
Light Duty Emissions
0 Replace spark plugs. At1 Emission Control Senlice.
0 Inspect spark plug wires. Ai7 Emission Control Service. ;
0 Replace air cleaner filter. An E~~zission Control Sunice.
-
r! Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap
gasket for any damage. Replace parts
as needed. An E~nission Control
Service. ?
DATE
SERVICED BY: ACTUAL MILEAGE I
<
Maintenance Schedule I - Gasoline Engines Heavy
Duty Emissions
The services shown in this schedule up to 60.000 miles ( 100 000 km) should
be performed after
60.000 miles (100 000 km) at the same intervals.
Footnotes
*<: Drive axle service:
a
a
0
a
Locking Differential - Drain fluid and refill at first engine oil change.
At subsequent oil changes, check fluid level and add fluid as needed.
If
driving in dusty areas or towing a trailer, drain fluid and refill every
15,000 miles
(25 000 km).
Standard Differential
- Check fluid level and add fluid as needed at
every engine oil change.
If driving in dusty areas or towing a trailer,
drain fluid and refill every
15,000 miles (25 00 km).
More frequent lubrication may be required for heavy-duty or off-road
use.
3500 HD Models with applications requiring extreme overload/trailer
towing conditions and high speed (above
45 mph or 72 km/h)
conditions for extended periods of time must have the drive axle fluid
changed every
3,000 miles (5 000 km) or 3 months, whichever occurs
first, or must use
75W-140 synthetic fluid meeting GM specifications.
See “Recommended Fluids and Lubricants”
in this section.
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