GMC SIERRA 1995 Owners Manual
Manufacturer: GMC, Model Year: 1995, Model line: SIERRA, Model: GMC SIERRA 1995Pages: 488, PDF Size: 26.01 MB
Page 351 of 488

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
ProCarManuals.com
Page 352 of 488

Fuse Block
I 25AMP I CLEAR I
I 30AMP I GREEN I
f
.
D
01
o7 o2
o3
[I8 o9
0
[I,,
0.
0 lo
0 22
0
0 23
0 l2
0 24
6-86
ProCarManuals.com
Page 353 of 488

Fuses and Circuit Breakers
POSITION NAME
1. STOP/HAZ
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
IS.
16.
17.
18.
19.
20.
21. 22.
T CASE
CTSY
GAGES
RR HVAC
CRUISE
AUX PWR
CRANK
PARK LPS
AIR BAG
WIPER HTR-A/C
CIG LTR
ILLUM
DRL-FOG
TURN-B/U RADIO
BRAKE RADIO
BATT
TRANS
CIRCUITS PROTECTED
Stop/TCC Switch, Buzzer, CHMSL, Hazard
Lamps, Stop Lamps
Transfer Case
Courtesy Lamps, Cargo Lamp, Glove Box
Light, Dome/RDG Lamps, Vanity Mirrors,
Pwr Mirrors
IP Cluster, DRL Relay, HDLP Switch,
Keyless Entry, Low Coolant Module
RR HVAC Controls
Cruise Control
Aux Power Outlet
Diesel Fuel Pump, DERM, ECM
Lic Lamp, Park Lamp, Tail Lamp, Roof
Marker Lamp, Tail Gate Lamps, Front Side
Markers, Fog Lamp Relay, Door Switch
Illum, Fender Lamps
DERM
Wiper Motor, Washer Pump
A/C, A/C Blower, High Blower Relay
Power Amp, Cig Lighter, Door Lock Relay,
Pwr Lumbar Seat
4WD, Indicator, LP Cluster, HVAC
Controls,
RR HVAC Controls, IP Switches,
Radio Illumination
DRL Relay, Fog Lamp Relay
Frt Turn, RR Turn, B/U Lps
Radio (Ign)
DRAC, 4WAL PCM, ABS, Cruise
Radio (Batt)
PRNDL, Auto Transmission, Speedo,
Check Gages
Tell Tale
Not Used
Not Used
6-87
ProCarManuals.com
Page 354 of 488

POSITION
23.
24.
A.%
B . -1-
NAME
Not Used
CIRCUITS PROTECTED
Not Used
4WD Frt
Axle, 4WD Indicator Lamp
PWR ACCY Pwr Door Lock, 6-Way Pwr Seat, Keyless
Entry Module
PWR
WDOS
?Circuit Breaker
Lamp and Bulb Data
LAMP OR
BULB
HEADLAMPS
2 Headlamp
System (Sealed
Beam)
Low/High Beam
4 Headlamp
System
(Composite)
Low/High Beam
High Beam
LAMP OR BULB
EXTERIOR
Front Marker Lamp
Front Park and Turn
Lamp
Rear Parking
Lamp
Rear Stop and Turn
Lamp
Backup Lamp
Backup
Lamp
Rear Park, Stop, and
Turn Lamp* Power Windows
TRADE NO.
H6054
6052
9005 POWER
RATING AT
12.8V, WATTS
35/65
TRADE NO.
55/65
65
194
2357NA
3057
3057
3 156
1156
1157 2
2
2
2
4
2
2
2
2
2
6-88
ProCarManuals.com
Page 355 of 488

LAMP OR BULB EXTERIOR
Fender Clearance
Lamp
Roof Marker Lamp
Cargo Lamp/CHMSL License Plate Lamp
Underhood Lamp
Reel Lamp
Thassis Cab Only
LAMP OR BULB
INTERIOR
Dome Lamps
Reading Lamps
Roof Console Lamps:':
IP Courtesy Lamp
Door Courtesy Lamp
Four Wheel Drive
Indicator
Four Wheel Drive
Shift
Lever
Instrument Panel
Compartment Lamp
Ashtray Lamp
Sunshade Vanity
Mirror
TRADE NO.
I94
I94
92
I
I94
232
232
TRADE NO.
211-2
21 1-2
168
I94
194
194
194
194
194
74 4
2
4
2
1
1
1
1
4
"Regular Pickup Model
**Crew Cab Model
6-89
ProCarManuals.com
Page 356 of 488

LAMP OR BULB
INSTRUMENT
PANEL
Daytime Running
Lamps Indicator?
Charging System
Indicator Lamp
Instrument Cluster
Illumination
Headlamp Beam
Indicator
Directional Signal
Indicator
Brake Warning
Indicator
SIR (Air Bag)
Safety Belt Warning
Check Gages Indicator
Malfunction Indicator
(“Service Engine
Soon”) Lamp
Upshift Indicator Glow Plugs Lamp**
Low Coolant Lamp**
Water in Fuel Lamp**
Service Throttle Soon
Lamp**
**Diesel only
“fanadian Vehicles only
TRADE NO.
74
74
194
74
74
74
74
74
74
74
74
74
74
74
74
1
I
6
1
2
1
6-90
ProCarManuals.com
Page 357 of 488

Scheduled Maintenance Services
KEEP ENGINE OIL
AT THE PROPER
LEVEL AND CHANGE
AS RECOMMENDED
Section
This section covers the maintenance required for your vehicle. Your vehicle
needs these services to retain its safety, dependability and emission control
performance.
I protection
Plan
I
Introduction
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your vehicle in good
working condition, but also helps the environment. All recommended
maintenance procedures are important. Improper vehicle maintenance or the
removal
of important components can significantly affect the quality of the
air we breathe. Improper
fluid levels or even the wrong tire inflation can
increase the level of emissions from your vehicle.
To help protect our
environment, and
to help keep your vehicle in good condition, please
maintain your vehicle properly.
7-1
ProCarManuals.com
Page 358 of 488

How This Section is Organized
The remainder of this section is divided into five parts:
“Part A: Scheduled Maintenance Services” shows what to have done and
how often. Some
of these services can be complex, so unless you are
technically qualified and have the necessary equipment, you should let your
dealer’s service department or another qualified service center do these
jobs.
If you are skilled enough to do some work on your vehicle, you will
probably want to get the service information
GM publishes. See “Service
Publications”
in the Index.
“Part B: Owner Checks and Services” tells you what should be checked
whenever you stop for fuel.
It also explains what you can easily do to help
keep
your vehicle in good condition.
“Part C: Periodic Maintenance Inspections” explains important
inspections that your
GM dealer’s service department or another qualified
service center should perform.
“Part D: Recommended Fluids and Lubricants” lists some products GM
recommends to help keep your vehicle properly maintained. These products,
or their equivalents, should be used whether you do the work yourself or
have it done.
“Part E: Maintenance Record” provides a place for you to record the
maintenance performed on your vehicle. Whenever any maintenance
is
performed, be sure to write it down in this part. This will help you
determine when your next maintenance should be done.
In addition, it is a
good idea to keep your maintenance receipts. They may be needed to
qualify your vehicle for warranty repairs.
7-2
ProCarManuals.com
Page 359 of 488

Part A: Scheduled Maintenance Services
Using Your Maintenance Schedule
We at General Motors want to help you keep your vehicle in good working
condition. But we don’t know exactly how you’ll drive it. You may drive
very short distances only
a few times a week. Or you may drive long
distances all the time
in very hot, dusty weather. You may use your vehicle
in making deliveries. Or you may drive it to work, to do errands or in many
other ways.
Because
of all the different ways people use their GM vehicles, maintenance
needs varv.
You may even need more frequent checks and replacements than
you‘ll find
in the schedules in this section. So please read this section and
note how you drive. If you have any questions on how to keep your vehicle
in good condition. see your GM dealer.
This part tells you the maintenance services you should have done and
when
you should schedule them. If you go to your dealer for your service needs,
you’ll know that GM-trained and supported service people
will perform the
work using genuine
GM parts.
The proper fluids and lubricants to use are listed
in Part D. Make sure
whoever services your vehicle uses these.
All parts should be replaced and
all necessary repairs done before you or anyone else drives the vehicle.
These schedules are for vehicles that:
carry passengers and cargo within recommended limits. You will find
these limits on your vehicle’s CertificatiodTire label. See “Loading
Your Vehicle“
in the Index.
are driven on reasonable road surfxes within legal driving limits.
are driven off-road in the recommended manner. See “Off Road
Driving With Your Four-wheel Drive Vehicle”
in the Index.
use the recommended unleaded fuel. See “Fuel” in the index.
Selecting the Right Schedule
The proper maintenance schedule for your vehicle depends on which engine
you have
in your vehicle and how you use your vehicle.
Gasoline engine vehicles and diesel engine vehicles have different
maintenance requirements.
If you have a diesel engine, follow a schedule
designated for diesel engine vehicles only. If you have
a gasoline engine.
you must first determine whether your engine has
a light duty or a heavy
duty emissions classification. Follow a maintenance schedule designated
for
for your engine. See “Engine Identification” in the Index to find your
engine‘s emission classification.
c easoline engines with the emissions classification (light duty or heavy duty)
7-3
ProCarManuals.com
Page 360 of 488

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)
7-4
ProCarManuals.com