1995 GMC SIERRA radiator cap

-
7. Then fill the
coolant surg,e
tank with the
proper
mix. up to
the COLD mark.
8. With the coolant surge tank pressure cap off, start the engine and let it
run until you can feel the upper radiator hose getting hot. Watch out for
the engine fan(s).
By this time, the coolant level inside the coolant surge tank may be
lower. If the level is lower, add more of the proper mix to the coolant
surge tank until the level reaches
the COLD mark.
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To Add Coolant
If you need more coolant, add the proper mix at the coolant recovery tank.
A CAUTION:
arning the radiator pressure cap when the engine and radiator
are hot can allow steam and scalding liquids to blow out and
burn you badly. With the coolant recovery tank, you will almost
never have to add coolant at the radiator. Never turn the
radiator pressure cap
- even a little - when the engine and
radiator are hot.
Add coolant mix at the recovery tank, but be careful not to spill it.
A CAUTION:
You can be burned if you spill coolant on hot engine parts.
Coolant contains ethylene glycol, and it will burn
if the engine
parts are hot enough. Don’t spill coolant on a hot engine.
Adding Coolani - Diesel Engine
The coolant surge tank
is located on the
passenger side at the
rear corner of the
engine compartment.
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To Check Coolant
A CAUTION:
Turning the surge tank pressure cap when the engine and
radiator are hot can allow steam and scalding liquids to blow out
and burn you badly. Never turn the surge tank pressure cap
-
even a little - when the engine and radiator are hot.
When your engine is cold, the coolant level should be at the COLD mark, or
a little higher.
If this light comes on, it means you’re low on engine coolant.
To Add Coolant
If you need more coolant, add the proper mix ut the surge tmk, but only
when the engine is cool. If the surge tank is empty, see “Engine
Overheating”
in the Index for the proper fill procedure.
A CAUTION:
You can be burned if you spill coolant on hot engine parts.
Coolant contains ethylene glycol, and
it will burn if the engine
parts are hot enough. Don’t spill coolant on a hot engine.
When replacing the pressure cap, make sure it is tight.
6-38
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Radiator Pressure Cap - Gasoline Engine
The radiator pressure
cap must be tightly
installed with
the
arrows on the cap
lined up with the
overflow tube on the
radiator filler neck.
NOTICE:
Your radiator cap is a 15 psi (105 kPa) pressure-type cap and
must be tightly installed to prevent coolant loss and possible \
engine damage from overheating. Be sure the arrows
on the cap
line up with the overflow tube on the radiator filler neck.
Surge Tank Pressure Cap - Diesel Engine
The surge tank
pressure cap must be
tightly installed with
the arrows on the cap
lined up with the top
tube of the coolant
surge tank.
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NOTICE:
Your surge tank pressure cap is a unique 15 psi (105 kPa)
pressure-type cap for use with surge tank cooling systems only.
It must be tightly installed to prevent coolant loss and possible
engine damage from overheating. Be sure the arrows on the cap
line up with the top tube of the coolant surge tank.
Thermostat
Engine coolant temperature is controlled by a thermostat in the engine
coolant system. The thermostat stops the flow
of coolant through the
radiator until the coolant reaches a preset temperature.
When you replace your thermostat, an AC@ thermostat is recommended.
Power Steering Fluid
How To Check Power Steering Fluid
When the engine compartment is cool, unscrew the cap and wipe \
the
dipstick with a clean rag. Replace the cap and completely tighten it. Then
remove the cap again and look at the fluid level on the dips\
tick.
The level should be at the
FULL COLD mark. Add enough fluid to bring
the level
up to the mark.
A fluid loss in this system could indicate a problem. Have the system
inspected and repaired.
6-40
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Service Replacement Part and Filter
Recommendations
- Gasoline Engines
Engine 4.3L
VTN Z
Oil Filter PFS2
Air Cleaner
A 178CW
Filter
PCV Valve CV789C
Spark
Plugs* .CR43TS
Fuel Filter GF48
1
Radiator Cap
RC36
5.0L
H
PF12183-
A348C
cv774c
.CR43TS
GF48
1
RC36
5.7L
K
PF1218q A348C
cv774c
.CR43TS GF38
1
RC36
+Four Wheel Drive Vehicle
- use a PFS2 oil filter
Wse AC copper-cored resistor type spark plugs
Service Replacement Part and Filter
Recommendations
- Diesel Engines
Engine 6.5L 6.5L
VIN P S
Oil Filter PF1218
PF1218
Air Cleaner A644C
A 1236C
Fuel Filter TP
1006 TP
1 006
Surge
Tank Cap RC33 RC33
7.41
N
PF1218
A348C
cv774c
.CR43TS GF48
I
RC36
6.51
F
PF1218
A 1236C
TP
I006
RC33
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LI
c
Maintenance Schedule I - Gasoline Engines With
Light Duty Emissions
(Contimed)
Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See "Engine Coolant''
in the lndex for what to use.
Inspect hoses. Clean radiator. condenser. pressure cap and neck.
Pressure test
the cooling system and pressure cap. An Emission Control
Service.
For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Replace spark plugs.
An E~~zissior~ Corztrol Ser-vice.
Replace air cleaner filter. Replace filter more often under dusty
conditions.
An Emission Cor~tr-01 Service.
Rotate tires. See "Tire Inspection and Rotation" in the lndex for proper
rotation pattern and additional information.
I DATE I ACTUAL MILEAGE I SERVICED BY:
33,000 Miles (55 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Er7rissiou Contmi 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
(-I 2" 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).
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60,000 Miles (100 000 km)
c;
0
0
0
il
0
Change engine oil and filter (or every 3 tnonths. whichever occurs
first).
AI? Emission Control Service.
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).
Check rear/fi-ont axle fluid level and add fluid as needed. Check
constant
-\;elociry joint5 and axle seals for leaking.';'';'
For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Inspect engine accessory drive belt.
An Emissiolz Comrol Ssrvice.
Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See "Engine Coolant"
in the lndex for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test the cooling system and pressure cap.
,411 Erltission Control
Service.
Replace spark plugs. AI? Emission Control Service..
Replace air cleaner filter. Replace filter more often under dusty
conditions.
Arz Emission Colztrol Service.
Inspect fuel tank, cap and lines for damage or leaks . Inspect fuel cap
gasket for any damage. Replace parts as needed.
A17 E~nission Control
Service. -i-
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