ignition CHEVROLET EXPRESS 1997 1.G Service Manual

Downloaded from www.Manualslib.com manuals search engine If your vehicle has more than one battery, use the
battery that is under the hood of the vehicle
- this
will reduce the electrical resistance.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren’t touching
each other.
If they are, it could cause a ground
connection
you don’t want. You wouldn’t be able to
start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake firmly on both vehicles. Put your
automatic transmission in PARK
(P).
3. Turn off the ignition on both vehicles. Turn off all
lamps that aren’t needed, and radios. This will avoid
sparks and help save both batteries, and could save
your radio.
1 NOTICE:
If’ you leave your radio on, it could be badly
damaged. The repairs would not be covered by
your warranty.
4. Open the hoods and locate the batteries. Find the
positive
(+) and negative (-) terminals on each battery.
An electric fan can start up even when the engine
is not running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.

Downloaded from www.Manualslib.com manuals search engine I I
’ A CAUTIO--:
- - -
To help avoid injury to you or others:
0
0
0
0
0
Never let passengers ride in a vehicle that is
being towed.
Never tow faster than safe or posted speeds.
Never tow with damaged parts not
fully secured. Never get under your vehicle after it has
been lifted by the tow truck.
Always use separate safety chains on each
side when towing a vehicle.
When your vehicle is being towed, have the ignition
key
off. The steering wheel should be clamped in a
straight-ahead position, with a clamping device
I designed for towing service. Do not use the vehicle’s
steering column lock for this. The transmission should
be
in NEUTRAL (N) and the parking brake should
be released.
A
,!1 CAUTION:
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.

Downloaded from www.Manualslib.com manuals search engine Engine Compartment Fuse Relay Center
The fuse block is on the driver’s side of the engine
compartment at the rear.
,
[T)
Name
BLOWR
ABS
Circuits Protected
Blower Motor
Electronic Brake Control Module
Name
IGN-B
IGN-A
BATT
LIGHTING
RR BLOWER
ENG-
1
AIC
SPARE
AUX A
AUX-B
RH-HDLP
Circuits Protected
Ignition Switch
Starter Relay, Ignition Switch
Instrument Panel Fuse Block
Instrument Panel Fuse Block,
Headlamp Switch
Rear Auxiliary Blower
Motor Relays
Heated
02 Sensors, Mass Air
Flow Sensor, EGR Valve
Solenoid, Evap Canister Purge
Valve, Crankshaft Position Sensor,
Secondary Air Injection Relay
(Diesel), Water in Fuel Sensor
(Diesel), Fuel Heater (Diesel),
Glowplug
Relay (Diesel),
Wastegate Solenoid (Diesel)
Air Conditioning Clutch Relay
Spare Fuses
Upfitter Provisions
Upfitter Provisions
Right-hand Headlamp (Export Only)
6-63

Downloaded from www.Manualslib.com manuals search engine Name
RH-HIBM
ECM-I
HORN LH-HDLP
LH-HIBM
FUEL SOL
IGN-E
ECM-B
Circuits Protected
Right-hand High-beam Headlamp (Export Only)
Ignition Coil, Crankshaft Position
Sensor, VCM, Fuel Injectors,
Coil Driver
Horn Relay, Underhood Lamp(
s)
Left-hand Headlamp
(Export Only)
Left-hand High-beam Headlamp (Export Only)
PCM,
Fuel Solenoid Driver,
Engine Shutoff Solenoid
Air Conditioning Clutch Relay
Fuel Pump Relay, VCM, PCM,
Fuel Pump and Engine Oil
Pressure Switch
Capacities and Specifications
Replacement Parts
Replacement part numbers listed in this section are
based on the latest information available at the time
of
printing, and are subject to change. If a part listed in this
manual
is not the same as the part used in your vehicle
when
it was built, or if you have any questions, please
contact your
GM truck dealer.
These specifications are for information only. If you
have any questions, see the service manual for the
chassis
or refer to the body manufacturer’s publications.

Downloaded from www.Manualslib.com manuals search engine 2. Firmly apply both the parking brake (see “Parking Brake” in the Index if necessary) and the regular brake.
NOTE: Do not use the accelerator pedal, and be
ready
to turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL
(N). If
the starter works in any other position, your vehicle
needs service.
Brake-Tra- -mission Shift Interlock (BTSI) Check
/! CAUTION:
When you are doing this check, the vehicle could
move suddenly. If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough room around
the vehicle.
It should be parked on a level surface.
2.
3.
Firmly apply the parking brake (see “Parking Brake”
in the Index if necessary).
NOTE: Be ready
to apply the regular brake
immediately if the vehicle begins
to move.
With the engine
off, turn the key to the RUN
position, but don’t start the engine. Without applying
the regular brake, try to move
the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK
(P), your vehicle’s BTSI
needs service.
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
0 The key should come out only in LOCK.
lever is in PARK (P).

Downloaded from www.Manualslib.com manuals search engine Halogen Bulbs ................................ 6-32
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-5
Bulb Replacement ............................ 6-33
High/Low Beam Changer ...................... 2-34
OnReminder
................................ 2-40
Hearing Impaired. Customer Assistance
.............. 8-4
Heating
........................................ 3-7
High-Beam Headlamps
.......................... 2-34
Highway Hypnosis
.............................. 4-22
Hill and Mountain Roads
......................... 4-22
Hitches. Trailer
................................. 4-33
Hood
Checking Things Under
......................... 6-7
Prop
........................................ 6-8
Release
...................................... 6-7
Horn
......................................... 2-32
Hydroplaning
.................................. 4- 18
Headlamps .................................... 2-39
Wiring
..................................... 6-59
Ignition Switch
................................ 2- 16
Inflation. Tire .................................. 6-42
Inside Daymight Rearview Mirror
................. 2-43
Inspections
.................................... 7-49
Brakesystem
................................ 7-50
Exhaust Systems
............................. 7-49
Radiator and Heater Hose
...................... 7-49
RearAxle
................................... 7-50
Ignition Transmission
Lock Check
................. 7-47 Steering
.................................... 7-49
Suspension
.................................. 7-49
Throttle Linkage
.............................. 7-49
Cleaning
.................................... 6-52
Cluster
..................................... 2-48
FuseBlock
.................................. 6-60
Interior Lamps
................................. 2-40
Brightness Control
............................ 2-38
.................................... J ack. . Tire 5-25
Jump Starting ................................... 5-3
Keyless Entry System
........................... 2-6
Keys
.......................................... 2-2
Labels 4-27
Certification
................................. 4-27
Certification/Tire
............................. 4-27
Service Parts Identification
..................... 6-58
Tire-Loading Information
...................... 4-27
Vehicle Identification Number
................... 6-58
Dome
...................................... 2-40
Interior
..................................... 2-40
OnReminder
................................ 2-40
Panel
....................................... 2-40
Underhood
.................................. 2-42
Lalnps
........................................ 2-38
Leaving
Your Vehicle with the Engine Running ....... 2-26
Lighter
....................................... 2-45

Downloaded from www.Manualslib.com manuals search engine Lights Air Bag Readiness
....................... 1.27. 2.5 1
Anti-Lock Brake System Warning ............ 2.53. 4.7
Brake System Warning
......................... 2-52
Daytime Running Lamps Indicator
............... 2-54
Interior
..................................... 2-40
Safety Belt Reminder
..................... 1 . I 1. 2.50
Service Engine Soon
.......................... 2-54
Loading Your Vehicle
........................... 4-27
Locks
......................................... 2-4
Door
........................................ 2-4
Ignition Transmission Lock Check
............... 7-47
PowerDoor
.................................. 2-5
Rear Door Security
............................. 2-5
Sliding Door Child Security
...................... 2-5
LossofControl
................................ 4-13
Lubricants and Fluids ............................ 7-5 1
Lubrication Service. Body ........................ 7-46
Maintenance. Normal Replacement
Parts ........... 6-67
Maintenance Record
............................ 7-53
Maintenance Schedule
............................ 7- 1
Long Tripmighway Definition ................... 7-6
Long Tripmighway Intervals
..................... 7-7
Owner Checks and Services
..................... 7-45
Periodic Maintenance Inspections
................ 7-49
Recommended Fluids and Lubricants
............. 7-5 1
Scheduled Maintenance Services .................. 7-4 Short
Trip/City Definition
....................... 7-5
Short Trip/City Intervals
........................ 7-5
Maintenance. Underbody
......................... 6-56
Maintenance When Trailer Towing
................. 4-37
Malfunction Indicator Lamp
...................... 2-54
ManualFrontSeat
............................... 1-2
Mirrors
....................................... 2-43
Convex Outside
.............................. 2-44
Inside Daymight Rearview
..................... 2-43
Power Remote Control
......................... 2-43
Visor Vanity
................................. 2-46
MMT
......................................... 6-4
Model Reference
................................. vi
Mountain Roads
................................ 4-22
Multifunction Lever
............................. 2-33
Neutral. Automatic Transmission ................. 2-21
New Vehicle Break-In ........................... 2-16
NightVision
................................... 4-15
Noise Control System
........................... 6-11
Odometer
.................................... 2-49
Odometer. Trip
................................. 2-49
Overheating Engine
............................. 5-12
Off-Road Recovery
............................. 4-11
Oil. Engine
.................................... 6-12
Owner Checks and Services
....................... 7-45
Owner Publications. Ordering
..................... 8-11