brake GMC SIERRA 1995 Repair Manual

Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced carefully at the
factory
to give you the longest tire life and best overall performance.
In most cases, you will not need to have your wheels aligned again.
However, if
you notice unusual tire wear or your vehicle pulling one way or
the other,
the alignment may need to be reset. If you notice your vehicle
vibrating when driving
on a smooth road, your wheels may need to be
rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted or corroded. If
wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts
should be replaced.
If the wheel leaks air, replace it (except some aluminum
wheels, which can sometimes be repaired). See your
GM dealer if any of
these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load carrying capacity, diameter,
width, offset, and be mounted the same way as the one
it replaces.
If you need to replace any of your wheels, wheel bolts, or wheel nuts,
replace them only with new
GM original equipment parts. This way, you
will be sure to have the right wheel, wheel bolts, and wheel nuts for your
vehicle.
A CAUTION:
Using the wrong replacement wheels, wheel bolts, or wheel nuts
on your vehicle can be dangerous. It could affect the braking
and handling
of your vehicle, make your tires lose air and make
you lose control, You could have a collision in which
you or
others could be injured. Always use the correct wheel, wheel
bolts, and wheel
nuts for replacement.
NOTICE:
The wrong wheel can also cause problems with bearing life,
brake cooling, speedometer/odometer calibration, headlamp
aim, bumper height, vehicle ground clearance, and tire or tire
chain clearance to the body and chassis.
6-65
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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
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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
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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)
7-4
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Schedule I Intervals - Gasoline Engines with Heavy Duty
Emissions
Every
3,000 Miles (5 000 km)
Engine Oil and Filter Change (or every 3 months, whichever occurs first)
Chassis Lubrication (or every
3 months, whichever occurs first)
Drive Axle Service
At 6,000 Miles (10 000 km) - Then Every 12,000 Miles (25 000 km)
Tire Rotation
Every 12,000 Miles (20 000 km)
Air Cleaner Filter Inspection, if Driving in Dusty Conditions
Front Wheel Bearing Repack (or at Each Brake Relining) (2-Wheel Drive
Only
1
Fuel Filter Replacement
Engine Accessory Drive Belt Inspection
Shields
and Underhood Insulation Inspection
Thermostatically Controlled Engine Cooling Fan Check (or every
12
months, whichever occurs first)
Every 24,000 Miles (40 000 km)
Cooling System Service (or every 24 months, whichever occurs first)
Air Cleaner 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 (%Speed Transmission with Deep-Low
Only)
7-7
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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.
7-9
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I Schedule I Intervals - Diesel Engines I
Every 2,500 Miles (4 000 km)
Engine Oil and Filter Change (or every 3 months, whichever occurs first)
Chassis Lubrication (or every
3 months, whichever occurs first)
Air Cleaner Filter Inspection.
if Driving in Extremely Dusty or Dirty
(Off-Road) Conditions
Every 5,000 Miles (8 000 km)
Drive Axle Service
Every 7,500 Miles (12 000 km)
Air Cleaner Filter Inspection, if Driving in Dusty Conditions
At 7,500 Miles (12 000 km) - Then Every 15,000 Miles (24 000 km)
Tire Rotation
Every 10,000 Miles (I 6 000 km)
Shields and Underhood Insulation Inspection
Thermostatically Controlled Engine Cooling Fan Check (or every
12
months, whichever occurs first)
Air Intake System Inspection
Every 15,000 Miles (24 000 km)
Air Cleaner Filter Replacement
Front Wheel Bearing Repack
(or at Each Brake Relining) (2-Wheel Drive
Only j
Every 30,000 Miles (50 000 km)
Clutch Fork Ball Stud Lubrication (%Speed Transmission with Deep-Low
Only:)
Fuel Filter Replacement
Cooling
System Service (or every 24 months, whichever occurs first)
Every 50,000 Miles (80 000 km)
Automatic Transmission Service
7- 10
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Every 60,000 Miles (100 000 km)
Crankcase Depression Regulator Valve (CDRV) System Check
Engine Accessory Drive Belt Inspection
Fuel Tank, Cap and Lines Inspection
Evaporative Control System Inspection
Exhaust Gas Recirculation (EGR) System Inspection
(if equipped)
Exhaust Pressure Regulator Valve Inspection
I Schedule 11 Definition - Diesel Engines
Follow Schedule II on!\- if none ofrhe conditions i'wm Schcdtilc I Is truc.
--
I Schedule I1 lntervals - Diesel Engines 1
Every 5,000 Miles (8 000 km)
Engine Oil and Filter Change (or every 12 months, whichever occurs first)
Chassis Lubrication
(or every 12 months, whichever occurs first)
Drive Axle Service
At 5,000 Miles (8 000 km) - Then Every 10,000 Miles (16 000 km)
Tire Rotation
Every 10,000 Miles (16 000 km)
Shields and Underhood insulation Inspection
Air Intake System Inspection
Thermostatically Controlled Engine Cooling Fan Check (or every
I2
months, whichever occurs first)
Every 30,000 Miles (48 000 km)
Cooling System Service (or every 24 months, whichever occurs first)
Front Wheel Bearing Repack (or
at Each Brake Relining) (2-Wheel Drive
Fuel Filter Replacement
Air Cleaner Filter Replacement
Clutch Fork Ball Stud Lubrication (5-Speed Transmission with Deep-Low
Only)
Only)
7-11
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Maintenance Schedule I - Gasoline Engines With
Light Duty Emissions
3,000 Miles (5 000 km)
[7 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Sen7ic.e.
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
(-1 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).
C Check rear/front axle fluid level and add -fluid as needed. Check
constant velocity joints and
axle seals for leaking. *'*
DATE SERVICED BY: ACTUAL MILEAGE I
6,000 Miles (10 000 km)
iI Change engine oil and filter (or every 3 months, whichever occurs
first).
AI? Emission Confro1 Ser\lic.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" E
(,-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.
*'$
(Contiwed)
7-13
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Maintenance Schedule I - Gasoline Engines With
Light
Duty Emissions ~~~~ ~~ ~ ~
(Continued)
0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information.
I DATE I ACTUAL MILEAGE I SERVICED BY:
9,000 Miles (15 000 km)
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 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 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.
*'g
DATE SERVICED BY: ACTUAL MILEAGE
7-14
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