2000 CHEVROLET VENTURE lock

6-58 Headlamp Wiring
The headlamp wiring is protected by an internal circuit
breaker in the instrument panel fuse panel. An electrical
overload will cause the lamps to go on and off, or in
some cases to remain off. If this happens, have your
headlamp wiring checked right away.
Windshield Wipers
The windshield wiper motor is protected by an internal
circuit breaker and a fuse. If the motor overheats due to
heavy snow, etc., the wiper will stop until the motor
cools. If the overload is caused by some electrical
problem, be sure to get it fixed.
Power Windows and Other Power Options
Circuit breakers in the instrument panel fuse panel
protect the power windows and other power accessories.
When the current load is too heavy, the circuit breaker
opens and closes, protecting the circuit until the problem
is fixed.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links.
Look at the silver
-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
If you ever have a problem on the road and don't have a
spare fuse, you can borrow one that has the same
amperage or use one of the spare fuses in the underhood
fuse and relay center. Just pick some feature of your
vehicle that you can get along without
-- like the radio
or cigarette lighter
-- and use its fuse, if it is the right
amperage. Replace it as soon as you can.
There are two fuse blocks in your vehicle: the
instrument panel fuse block and the underhood fuse
and relay center.

6-59
Instrument Panel Fuse Block
The instrument panel fuse
block is located to the right
of the glove box.
Pull the door open to access the instrument
panel fuse block.
Circuit
BreakersUsage
HEADLAMP DRL Control Module, Headlamp and
Instrument Panel Dimmer Switch
PWR WDO Front Power Windows
PWR HEATED
SEAT/PSD6
-Way Power Seat(s) and Rear Side
Door Actuator Motor
FRT HVAC/
HI BLWRBlower Motor Hi Speed
Relay Module

6-60
Fuses Usage
SWC
BACKLIGHTSteering Wheel Radio Control
Switches (Illumination)
PCM/PASS
KEY/CLUSTERInstrument Cluster to
PRNDL Indicators
PWR MIRROR Power Remote Control
Mirror Switch
CRUISE Cruise Control Module, Switch and
Release Switch
PCM/CRANK Power Control Module (PCM),
Ignition Crank
PASS KEY PASS
-Key III System
PWR LOCK Body Control Module (BCM)
HTD MIRROR Heated Mirrors
RH T/LP Not Used
RR FOG LP Not Used
CIGAR/DLC Cigarette Lighter and Data Link
Connector (DLC)
T/SIG Turn Signal Switch
PWR
QTR VENTInterior Lamp and Multifunction
Switch (Power Vent Switch)
FRT
WPR/WSHRWindshield Wiper/Washer
Motor and SwitchFuses Usage
HAZARD Turn Signal Switch
RR PWR SCKT Rear Electric Accessory
Plug Housing
DRL Daytime Running Lamps (DRL)
Control Module
LH T/LP Not Used
RR
DEFOG/HTD
MIRRORSRear Window Defogger Relay,
Heated Mirrors
FRT PWR SCKT Front Electric Accessory
Plug Housing
SIR Inflatable Restraint Control Module
HVAC
BLOWERHeater
-A/C Control
MALL/
CLUSTERInstrument Cluster, BCM,
Electronic Level Control (ELC)
Sensor and Relay
STOP LAMP Stoplamp Switch
CLUSTER
BATTModule/Electronic Brake Control
Module/Electronic Brake Traction
Control Module (EBCM/EBTCM)

6-62
Underhood Fuse and Relay Center
This fuse and relay
center is located in the
engine compartment,
in front of the
windshield washer
fluid reservoir.
The fuses marked spare are available if a replacement
fuse is needed.
To remove the cover, turn the knob clockwise and lift up
on the remote positive (+) battery terminal cover.
Remove the cover.
Maxi Fuse Usage
1
-COOL FAN 2 Coolant Fans
2 Not Used
3
-HEADLAMPS Circuit Breakers: FRT HVAC HI
BLWR, and HEADLAMP Fuses
(Instrument Panel): HAZARD
and STOPLAMP
4
-BATT MAIN 2 Circuit Breaker: PWR
SEAT/PSD. Fuses (Instrument
Panel): ELC and RR DEFOG

6-63
Maxi Fuse Usage
5
-IGN MAIN 1 Ignition Switch to Fuses
(Instrument Panel): ABS/TCS
IGN, CRUISE, DRL, ELEC
PRNDL, IGN 1, PSD, SIR, T/SIG
and PCM [IGN MAIN Relay
(Underhood Electrical Center
Fuses: A/C CLU, ELEK IGN,
IGN 1
-U/H, INJ, TCC)]
6
-COOL FAN 1 Coolant Fans
7
-BATT MAIN 1 Fuses (Instrument Panel): ABS
MOD BATT, CIGAR/DLC,
CTSY LAMP, FRT PWR SCKT,
PWR LOCK, PWR MIRROR and
RR PWR SCKT
8
-IGN MAIN 2 Ignition Switch to Fuses (I/P):
BCM PRGRM, FRT HVAC
LOW/MED BLWR, FRT
WPR/WSHR, HVAC/DRL,
MALL/RADIO/DIC, PWR QRT
VENT, RR HVAC, RR
WPR/WSHR, SWC ACCY and
PWR WDO Circuit BreakerMini Relays Usage
9
-COOL FAN RH FAN 1, LH FAN 2
10
-COOL FAN 2 LH FAN 2
11
-IGN MAIN FUSES: A/C CLU, IGN 1-U/H,
INS, ELEK IGN, TCC
12
-COOL FAN 1 RH FAN 1, LH FAN 2
Micro Relays Usage
13
-A/C CLU A/C Clutch
14
-FUEL PUMP Fuel Pump
15
-F/PMP SPD
CONTNot Used
16
-HORN Horn
17
-FOG LAMP LH Fog Lamp, RH Fog Lamp,
Fog Lamp Indicator
Mini Fuse Usage
18
-INJ Fuel Injectors 1-6
19
-SPARE Not Used
20 Not Used

6-64
Mini Fuse Usage
21
-IGN1-UH Evaporative Emissions (EVAP)
Canister Purge Valve, Heated
Oxygen Sensors 1 and 2, Mass
Air Flow (MAF) Sensor
22
-SPARE Not Used
23
-SPARE Not Used
24
-SPARE Not Used
25
-ELEK IGN Ignition Control Module (ICM)
26
-SPARE Not Used
27
-B/U LAMP Transaxle Range Switch to
Back
-up Lamps
28
-A/C CLU A/C CLU Relay to A/C
Compressor Clutch Oil
29
-RADIO Driver Information Display,
Heater A/C Control, Radio, Rear
Side Door Actuator Control
Motor, Remote Control Door
Lock Receiver (RCDLR),
Security Indicator Lamp and
Theft
-Deterrent Shock Sensor
30
-ALT SENSE GeneratorMini Fuse Usage
31
-TCC Automatic Transaxle (Torque
Converter Clutch Solenoids)
Stoplamp Switch to PCM
32
-FUEL PUMP Fuel Pump Relay
33
-ECM SENSE Powertrain Control Module
(PCM)
34 Not Used
35
-FOG LP Fog Lamp Relay
36
-HORN Horn Relay
37
-PARK LP Daytime Running Lamps (DRL)
Control Module, Headlamps and
Instrument Panel Dimmer Switch
Theft
-Deterrent Relay to
Headlamps
38 Not Used
39
-SPARE Not Used
40 Mini Fuse Puller

7-17 At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified in Part D.
Body Lubrication Service
Lubricate all key lock cylinders, hood latch assemblies,
secondary latches, pivots, spring anchor and release
pawl, hood and door hinges, rear folding seats, fuel door
hinge, liftgate hinges, power sliding door cable and
sliding door track(s). Part D tells you what to use. More
frequent lubrication may be required when exposed to a
corrosive environment.Starter Switch 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.
2. Firmly apply both the parking brake
(see ªParking Brakeº 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.

7-18
Automatic Transaxle Shift Lock Control
System 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. Firmly apply the parking brake (see ªParking Brakeº
in the Index if necessary).
NOTE: Be ready to apply the regular brake
immediately if the vehicle begins to move.3. 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 needs service.
Ignition Transaxle 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
lever is in PARK (P).

The key should come out only in LOCK.