1996 CHEVROLET SUBURBAN coolant temperature

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.
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.
6-38
ProCarManuals.com

Maintenance Schedule I - Gasoline Engines With
Light Duty Emissions
30,000 Miles (50 000 km)
0
0
0
0
0
0
0
0
Change engine oil and filter (or every 3 months, whichever occurs
first).
An 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 redfront axle fluid level and add
fluid as needed. Check
constant velocity joints and axle seals for leaking.‘$*
Drain, flush and refill cooling system (or every
24 months, whichever
occurs first). See “Engine Coolant’’
in the Index 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 Emission Control Service.
Replace air cleaner filter. Replace filter more often under dusty
conditions.
An Em.ission Control Service.
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information.
DATE SERVICED BY: ACTUAL MILEAGE
L
7-1 9
ProCarManuals.com

Maintenance Schedule I - Gasoline Engines With
Light Duty Emissions
(Continued)
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.*:$
I DATE I ACTUALMILEAGE I SERVICED BY: I
60,000 Miles (100 000 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).
17 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
0 Inspect engine accessory drive belt. An Emission Control Service.
0 Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant”
in the Index 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.
0 Replace spark plugs. An Emission Control Service.
(Continued)
7-26
ProCarManuals.com

I
Maintenance Schedule II - Gasoline Engines With
Light Duty Emissions
30,000 Miles (50 000 km)
0
0
0
0
0
0
0
Change engine oil and filter (or every 12 months, whichever occurs
first).
An 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
12 months, whichever occurs first).
Check readfront axle
fluid level and add fluid as needed. Check
constant velocity joints 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).
Drain,
flush and refill cooling system (or every 24 months, whichever
occurs first). See "Engine Coolant" in the Index 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.
Replace spark plugs. An Emission Control Service.
Replace air cleaner filter. An Emission Control Service.
I DATE I ACTUALMILEAGE I SERVICED BY:
ProCarManuals.com

Maintenance Schedule I - Gasoline Engines Heavy
Duty Emissions
48,000 Miles (80 000 km)
0
0
0
0
0
0
Change engine oil and filter (or every 3 months, whichever occurs
first).
An 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 12 months, whichever occurs first).
Check readfront axle fluid level and add fluid
as needed. Check
constant velocity joints and axle seals for leaking.‘””
Drain, flush and refill the cooling system with new coolant (or every
24
months, whichever occurs first). See “Engine Coolant’’ in the Index for
what to use.
An Emission Control Service.
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.
Replace air cleaner filter. Replace filter more often under dusty
conditions.
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
fuel filter. Replace filter sooner if it is clogged.?
Adjust timing
to underhood label specifications. Inspect the inside and
outside
of the distributor cap and rotor for cracks, carbon tracking and
corrosion. Clean or replace
as needed. An Emission Control Service.
This is a Noise Emission Control Service.
If your vehicle has a thermostatically controlled air cleaner, inspect all
hoses and ducts for proper hook-up. Be sure the valve works properly.
An Emission Control Service. This is a Noise Emission Control
Service.
(Continued)
7-47
ProCarManuals.com

Maintenance Schedule II - Gasoline Engines With
Heavy Duty Emissions
1 Lvntinued)
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information.
I DATE I ACTUALMILEAGE I SERVICED BY: I
24,000 Miles (40 000 km)
Change engine oil and filter (or every 12 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
12 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
0 Inspect engine accessory drive belts (or every 24 months, whichever
occurs first).
An Emission Control Service.
0 Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant”
in the Index 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.
Replace air cleaner filter. An Emission Control Service.
0 Replace fuel filter. An Emission Control Service.
DATE I ACTUALMILEAGE I SERVICED BY:
7-55
ProCarManuals.com

Maintenance Schedule II .- Gasoline Engines With
Heavy Duty Emissions I
(Continued)
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information.
I DATE I ACTUALMILEAGE I SERVICED BY I
48,000 Miles (80 000 km)
0
0
0
0
0
0
Change engine oil and filter (or every 12 months, whichever occurs
first).
An 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
IO” 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, whi2hever occurs first).
Check readfront axle fluid level and add fluid
as needed. Check
constant velocity joints and axle seals for leaking.**
Inspect engine accessory drive belts (or every 24 months, whichever
occurs first).
An Emission Control Service.
Inspect camshaft timing belt. An Emission Control Service.
Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant”
in the Index 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.
Replace spark plugs. An Emission Control Service.
(Continued)
7-5 8
ProCarManuals.com

I Maintenance Schedule I - Diesel Engines I
30,000 Miles (48 000 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
12 months, whichever occurs first).
Drain, flush and refill the cooling system with new coolant (or every 24
months, whichever occurs first). See "Engine Coolant" in the Index for
what to use.
An Emission Control Service.
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.
0 Replace air cleaner filter. Replace filter more often under dusty
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
0 Replace fuel filter. Replace filter sooner if it is clogged.?
0 Inspect shields and underhood insulation for damage or looseness.
conditions.
An Emission Control Service. 'k
bearings (or
at each brake relining, whichever occurs first).
Adjust or replace as required.
This is a Noise Emission Control
Service. Applicable only to vehicles
sold in the United States.
(Continued)
7-69
ProCarManuals.com