ignition CHEVROLET SUBURBAN 1997 Service Manual

Towing From the Front
A vehicle can fall from a car carrier if it isn’t
adequately secured. This can cause a collision,
serious personal injury and vehicle damage. The
vehicle should be tightly secured with chains or
steel cables before it is transported.
Don’t use substitutes (ropes, leather straps,
canvas webbing, etc.) that can be cut by sharp
edges underneath the towed vehicle.
Don’t have your vehicle towed on the drive wheels
unless you must. If the vehicle must be towed
on the
drive wheels, be sure to follow the speed and distance
restrictions later in this section or your transmission will
be damaged.
If these limitations must be exceeded, then
the drive wheels have to be supported on a dolly. If
your vehicle is four-wheel drive with a manual
transfer case, use the following directions:
1. Turn the ignition key to the off position.
2. Engage the parking brake.
3. Clamp the steering wheel in a straight-ahead
position with a clamping device designed for towing
service. (Do not use the vehicle’s steering column
lock for this.)
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4. Put the transmission in PARK (P).
5. Put the transfer case in NEUTRAL (N).
6. When the vehicle is hooked up, release the
7. Maximum speed 55 mph (88 km/h),
If your vehicle is a two-wheel drive or a four-wheel
drive with an electric shift transfer case, use the
following directions:
1. Turn the ignition key to the OFF position.
2. Engage the parking brake.
3. Clamp the steering wheel in a straight-ahead
parking
brake.
distance unlimited.
position with a clamping device designed for towing
service.
(Do not use the vehicle’s steering column
lock for this.)
4. Put the transmission in NEUTRAL (N).
5. Put the transfer case in 2HIGH (2HI).
6. When the vehicle is hooked up, release the
7. Maximum speed 35 mph (55 km/h), maximum
parking
brake.
distance
50 miles (80 km).
Towing From the Rear
I 3
NOTICE:
If your vehicle is equipped with a manual or
electric shift transfer case, a towing dolly must be
used under the front wheels or vehicldpowertrain
damage will occur.
SI1 n
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15
16
Fuse/Circuit Breaker Usage
14 4WD Indicator, Cluster, Front and
Rear Comfort Controls, Instrument
Switches, Radio Illumination,
Chime Module
DRL Relay, Fog Lamp Relay
17
18
19
20
21
22
23
24
A
B Front and Rear Turn Signals,
Back-up
Lamps, BTSI Solenoid
Radio (Ignition)
4WALNCM, ABS, Cruise Control
Radio (Battery)
PRNDL, Automatic Transmission, Speedometer, Check Gages,
Warning Lights
Variable Effort Steering
Not Used
Rear Wiper, Rear Washer Pump
Front Axle, 4WD Indicator Lamp,
TP2 Relay (Gasoline Engine)
Power Door Lock, Six-Way Power
Seat, Keyless Entry Module
Power Windows
Underhood Fuse/Relay Center
The underhood fusehelay center is located in the rear of
the engine compartment near the brake fluid reservoir.
Move the retainer clips for the cover to access the
fuse block.
You can remove fuses with a fuse extractor. The fuse
extractor is mounted to the interior fuse block. To
remove fuses if you don't have a fuse extractor, hold the
end of the fuse between your thumb and index finger
and pull straight out.
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Name
ECM-B
RR DEFOG
IGN-E
Circuits Protected
Fuel Pump, PCMNCM
Rear Window Defogger
Auxiliary Fan Relay Coil,
A/C Compressor Relay,
Hot Fuel Module
Name
FUEL SOL
GLOW PLUG
HORN
AUX FAN
ECM-
1
AIC ENG-
1
LIGHTING
BATT
IGN-A IGN-B
ABS
BLOWER
STOP/HAZ
Circuits Protected
Fuel Solenoid (Diesel Engine)
Glow plugs (Diesel Engine)
Horn, Underhood Lamps
Auxiliary Fan
Injectors, PCMNCM
Air Conditioning
Ignition Switch, EGR, Canister
Purge, EVRV Idle Coast Solenoid,
Heated
02, Fuel Heater
(Diesel Engine), Water Sensor
(Diesel Engine)
Headlamp and Panel Dimmer
Switch, Fog and Courtesy Fuses
Battery, Fuse Block Busbar
Ignition Switch
Ignition Switch Anti-Lock Brake Module
Hi Blower and Rear
Blower Relays
Stoplamps
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Ignition Transmission Lock Check
While parked, and with the parking brake set, try
to turn
the ignition key
to LOCK in each shift lever position.
The key should turn to LOCK only when the shift
The key should come out only in LOCK.
Parking Brake and Automatic Transmission
PARK (P) Mechanism Check lever
is in PARK
(P).
I 4 CAUTLN:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin to move.
-
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal.
Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release all brakes.
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Gear Positions. Automatic Transmission ............. 2- 16
Gross Axle Weight Rating
........................ 4-42
Gross Vehicle Weight Rating
...................... 4-42
Guide en Franqais
11
GloveBox .................................... 2-48
.. .................................
GVWR ....................................... 4-42
Halogen Bulbs
................................ 6-37
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-6
Headlamps .................................... 2-40
Bulb Replacement
.................. 6-37,6-38, 6-67
High/Low Beam Changer
...................... 2-34
On Reminder
................................ 2-41
Wiring
..................................... 6-62
Hearing Impaired, Customer Assistance
.............. 8-4
Heating
........................................ 3-8
High-Beam Headlamps
.......................... 2-34
Highway Hypnosis
.............................. 4-35
Hill and Mountain Roads
......................... 4-36
Hitches, Trailer
................................. 4-49
Hood Checking Things Under
......................... 6-8
Release
...................................... 6-9
Horn
......................................... 2-33
Hydroplaning
.................................. 4-31
Ignition Positions
.............................. 2- 12
Ignition Transmission Lock Check
................. 7-46
Illuminated Entry
............................... 2-42
Inflation, Tire
.................................. 6-45
Inside Rearview Mirror
.......................... 2-44 Inspections
.................................... 7-47
Brakesystem
................................ 7-48
DriveAxle
.................................. 7-48
Exhaust System
.............................. 7-47
Radiator and Heater Hose
...................... 7-47
Steering
.................................... 7-47
Suspension
.................................. 7-47
Throttle Linkage
.............................. 7-47
Transfer Case (Four-wheel Drive)
............... 7-48
Instrumentpanel
............................... 2-60
Brightness Control
............................ 2-42
Cleaning
.................................... 6-56
Cluster
..................................... 2-62
FuseBlock
.................................. 6-63
Interior Lamps
..................... ....... 2-42
Jack, Tire
............................... 5-24, 5-25
Jump Starting
................................... 5-3
Key Lock Cylinder Service
...................... 7-44
Keyless Entry System
............................ 2-6
Keys
............... .................... 2-2
Labels Certificatioflire
............................. 4-42
Service Parts Identification
..................... 6-61
Tire-Loading Information
...................... 4-42
Vehicle Identification Number
................... 6-61
9-5
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Lamps ........................................ 2-40
Cleaning Exterior
............................. 6-57
Dome
...................................... 2-43
Interior
..................................... 2-42
On Reminder
................................ 2-41
Latches, Seatback
................................ 1-6
Leaving Your Vehicle ............................. 2-5
Leaving Your Vehicle with the Engine Running
....... 2-27
Lighter
....................................... 2-58
Lights Air Bag Readiness
....................... 1.32. 2.65
Anti-Lkk Brake System Warning
............ 2.68. 4.7
Brake System Warning
......................... 2-67
Charging Warning System
...................... 2-65
Daytime Running Lamps Indicator
............... 2-72
Headlamp High-Beam Indicator
................. 2-73
Safety Belt Reminder
..................... 1 - 18, 2-64
Service Engine Soon
.......................... 2-69
Turn Signal and Lane Change Indicator
........... 2-73
Loading Your Vehicle
........................... 4-42
Loading Your Vehicle for Off-Road Driving
.......... 4- 15
Child Security ................................ 2-5
Ignition Transmission Lock Check
............... 7-46
Key Lock Cylinder Service
..................... 7-44
Lubricants and Fluids
............................ 7-49
Lubrication Service, Body
........................ 7-44
Luggagecarrier
................................ 2-57
CheckGages
................................ 2-73
Locks
......................................... 2-3
Cylinder
.................................... 7-44
Door
........................................ 2-3
PowerDoor
.................................. 2-4
Window
.................................... 2-32 Maintenance.
Normal Replacement Parts
........... 6-70
Maintenance Record
............................ 7-51
Long Tripmighway Definition
................... 7-6
Long Trip/Highway Intervals
..................... 7-6
Owner Checks and Services
..................... 7-43
Periodic Maintenance Inspections
................ 7-47
Recommended Fluids and Lubricants
............. 7-49
Scheduled Maintenance Services
.................. 7-4
Short Trip/City Definition
....................... 7-5
Short Trip/City Intervals
........................ 7-5
Maintenance. Underbody
......................... 6-59
Maintenance When Trailer Towing
................. 4-54
Malfunction Indicator Lamp
...................... 2-69
Maintenance Schedule
............................ 7-1
ManualFrontSeat
............................... 1-2
ManualMirror
................................. 2-47
Manualwindows
............................... 2-31
Methanol
...................................... 6-5
Mirrors
....................................... 2-44
Convex Outside
.............................. 2-47
Electrochromic Daymight Rearview
.............. 2-44
Inside Rearview
.............................. 2-44
Manual
..................................... 2-47
Power Remote Control
......................... 2-47
Model Reference
................................. vi
Mountain Roads ................................ 4-36
Multifunction Lever
............................. 2-33
Neutral, Automatic Transmission
.................. 2-18
New Vehicle Break-In ........................... 2-12
Nightvision
................................... 4-29
Normal Maintenance Replacement Parts
............. 6-70
MMT
......................................... 6-4
Net, Convenience
.............................. 2-54
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