air conditioning GMC SIERRA 1995 User Guide

Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air conditioning
system
in your vehicle needs refrigerant, be sure the proper refrigerant is
used.
If you’re not sure, ask your GM dealer. For additional information, see
your “Warranty and Owner Assistance Information” booklet,
NOTICE:
R-134A refrigerant is not compatible with R-12 refrigerant in
an air conditioning system.
R-12 in an R-134A system will cause
compressor failure, refrigerant oil sludge,
or poor air
conditioning system performance.
Air Conditioning
TYPE
Refrigerant R-
Refrigerant Capacity
134A
QTY
2.25 lbs. (1.020 kg)
6-85
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Maintenance Schedule I - Gasoline Engines Heavy
Duty Emissions
(Continued)
0
0
0
0
0
0
0
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 Sewice.
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.
Inspect accessory drive (serpentine) belt for cracks, fraying and wear
and check belt for proper tension. Adjust or replace belt as needed.
An
Emission Control Service.
Inspect shields and underhood insulation for damage or looseness.
Adjust or replace as required.
This is a Noise Emission Control
Service. Applicable only to vehicles sold in the United States.\

Check the air intake system installation to assure that gaskets are
properly sealed and that all hose connections, fasteners and other
components are tight. Also check to be sure that the air cleaner housing
is properly seated, the cover fits tightly and the wing nuts are tight.
Tighten connections and fasteners or replace damaged parts as
necessary.
This is a Noise Emission Control Service. Applicable only
to vehicles sold in the United States.
(Continued)
7-47
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I Maintenance Schedule I - Diesel Engines
(Continued)
I7 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. Auz Emissiolz 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
conditions.
An Emission Control Service. #’
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
0 Replace fuel filter. Replace filter sooner if it is clogged.?
bearings
(or at each brake relining, whichever occurs first).
0 Inspect shields and underhood insulation for damage or looseness.
Adjust or replace as required.
This is a Noise Emission Control
Service. Applicable only to vehicles sold in the United States.\

Check the air intake system installation to assure that gaskets are
properly sealed and that all hose connections, fasteners and other
components are tight.
Also check to be sure that the air cleaner housing
is properly seated, the cover fits tightly and the wing nuts are tight.
Tighten connections and fasteners or replace damaged parts as
necessary.
This is a Noise Emission Control Service. Applicable only
to vehicles sold in the United States.
0 If your engine has a thermostatically controlled cooling fan, inspect all
hoses and ducts for proper hook-up (or
every 12 months, whichever
occurs first). Be sure the valve works properly.
This is a Noise
Emission Control Service. Applicable only to vehicles
sold in the
United States.
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
7-70
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I Maintenance Schedule I - Diesel Engines
(Continued)
0 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
conditions.
An Emission Control Service. *
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
0 Check the crankcase depression regulator valve system for any worn,
plugged or collapsed hoses. See service manual.
An Emission Control
Service.
0 Replace fuel filter. Replace filter sooner if it is clogged.?
0 Check the EGR System (if equipped) (except Code F engine) as
described in the service manual.
An Emission Control Service.
0 Inspect accessory drive (serpentine) belt for cracks, fraying and wear
and check belt for proper tension. Adjust or replace belt as needed.
An
Emission Control Service.
0 Inspect shields and underhood insulation for damage or looseness.
Adjust or replace as required.
This is a Noise Emission Control
Service. Applicable only to vehicles sold in the United States.\

0 Check the air intake system installation to assure that gaskets are
properly sealed and that all hose connections, fasteners and other
components are tight. Also check
to be sure that the air cleaner housing
is properly seated, the cover fits tightly and the wing nuts are tight.
Tighten connections and fasteners or replace damaged parts as
necessary.
This is a Noise Emission Control Service. Applicable only
to vehicles sold in the United States.
0 If your engine has a thermostatically controlled cooling fan, inspect all
hoses and ducts
for proper hook-up (or every 12 months, whichever
occurs first). Be sure the valve works properly.
This is a Noise
Emission Control Service. Applicable only to vehicles sold in t\
he
United States.
(Continued)
7-79
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I Maintenance Schedule II - Diesel Engines
30,000 Miles (48 000 km)
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).
For vehicles equipped with a 5-speed manual transmission with deep
low: Lubricate the clutch fork ball stud through the fitting
on the clutch
housing. Lubricant must be added
spring1-y to the fitting, as very little
is required to lubricate the ball stud surface. Do not add lubricant more
often than specified.
Too much lubricant will damage the clutch
assembly.
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 Ernission 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.
An Emission Coratrol 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:?
Inspect shields and underhood insulation for damage or looseness.
Adjust
or replace as required. This is a Noise Emission Control
Service. Applicable only to vehicles sold in the United States.
(Continued)
7-85
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60,000 Miles (100 000 km)
o
r
0
0
0
0
E
Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emissim~ Control Ser~~ice.
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).
For vehicles equipped with a 5-speed manual transmission
with deep
low: Lubricate the clutch fork ball stud through the fitting
on the clutch
housing. Lubricant must be added
.spari11gl~* to the fitting, as very little
is required to lubricate the ball stud surface. Do not add lubricant more
often than specified.
Too much lubricant will damage the clutch
assembly.
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. Ar? Emissioll Cor1trol 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.
An Emission Control Set-l*icv.
For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Check the crankcase depression regulator valve system for any worn,
plugged or collapsed hoses. See service manual.
AIZ E~ui.ssio~? Co11troI
ScJr-\,ic*e.
Replace fuel filter. Replace filter sooner if it is clogged.-!-
Check the
EGR System (if equipped) (except Code F engine) as
described in the service manual. At7 EIII~SS~OII Control Service.
(C~)11tin~d)
7-93
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Index
A
Adding Equipment to Your Air Bag-Equipped Vehicle (See "Supplemental
Intlatable Restraint System (SIR)")
Air Bag (See "Supplemental Intlatable Restrain1 System (SIR)")
Air Cleaner (See "Engine-Air Cleaner")
Air Conditioning (See "HeatedAir Conditioning Controls")
Antenna
....................................................... 3-25
Readiness Light
(See "Lights")
Anti-Lock Brakes (See "Brakes")
Appearance Care
................................
Materials Chart ..............................
Arbitration Program (See "Better Business Bureau Media
Audio Systems
.................................
................ 6-67
................. 6-75
. tion")
.................. 3-6
Care of Your Cassette Player and Tapes ............................ 3-24
Care_of Compact Discs
......................................... 3-25
ETR: AM-FM Stereo Audio Cassette System
....................... 3-9
ETRf AM-FM Stereo Audio Cassette ATC System
.................. 3-11
ETR'?' AM-FM Stereo Audio Compact Disc ATC System ............. 3-16
Rcmote Cassette Player
...................................... 3-22
ETR&AM-FM Stereo Audio System
............................... 3-7
THEFTLOCK Theft Deterrent Feature
........................ 3- 14. 3-20
Understanding Radio Reception .................................. 3-23
Automatic Transmission (See "Tnlnsmission")
Axle LockingRea r
................................................. 2-27
Front (See "Four-Wheel Drive")
Rear
........................................................ 6-32
B
Battery ........................................................ 6-47
Belts (See "Safety Belts")
Better Business Bureau Mediation
.................................... 8-3
Blizzard (See "Driving-If You're Caught
in a Blizzard")
Brakes Adjustment
.................................................. 6-45
Anti-Lock (ABS)
.............................................. 4-6
Anti-Lock Warning Light (See "Lights")
Hydro-Boost Brake System
..................................... 6-41
Master Cylinder .............................................. 6-42
Parking
..................................................... 2-27
PedalTravel
................................................. 644
Propshaft Parking Brake Burnish Procedure
........................ 2-28
Replacingparts
............................................... 6-45
System Warning Light (See *'Lights")
To Check Brake Fluid .......................................... 6-43
Trailer (.See "Trailer-Brakes")
Transmission Shift Interlock
(BTSI) ............................... 2-20
Wear
....................................................... 6-44
WhattoAdd
................................................. 643
Braking ......................................................... 4-5
In Emergencies ................................................ 4-7
1
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H
Halogen Bulbs (See "Bulb Replacement")
Hazard Warning Flashers
........................................... 5-1
Head Restraints (See "Seats")
Headlamps and Vehicle Lighting
.................................... 2-48
Replacement (See "Bulb Replacement")
High Beam Indicator Light (See "Lights")
High-Low Beam Changer
...................................... 240
Reminder .................................................... 2-49
Heater Controls .................................................. 3-1
Refrigerant Capacity ........................................... 6-85
Heater/Air Conditioning Controls ............................... 3-2 . 6-46
Highway Hypnosis (See "Driving-Highway Hypnosis")
Hitches (See "Towing-Hitches")
Hood
Checking Under: Hood Release .................................. 6-13
Horn .......................................................... 2-38
Hydraulic Clutch ................................................ 6-31
When to Check and What to Use ................................. 6-32
Howtocheck ................................................ 6-32
Hydroplaning (See "Driving in the Rain")
I
If You're Stuck in Sand . Mud. Ice . or Snow ........................... 5-39
Ignition Switch .................................................. 2-10
Intlation-Tire Prussure (See "Tires")
Instrument Cluster
............................................... 2-68
InstrumentPanel ................................................ 2-68
J
Jacking Equipment Storage ................................... 5-27 . 5-28
Jump Starting .................................................... 5-2
K
Key Lock Cylinders ......................................... 6-46.7-94
Key Release Button .............................................. 2-11
Keyless Entry System ............................................. 2-7
Keys
........................................................... 2-1
L
Labe 1 s
Lamps
Certification/Tire (See "CertificaticdTire Label")
CargdCenter High Mounted Stop Lamp
...................... 2.52, 2.83
Daytime Running Lamps ....................................... 2-50
Dome
....................................................... 2-51
Fog ........................................................ 2-49
Headlights
(See "Headlamps")
5
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