Question about 2000 Chevrolet Blazer

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Exterior lamps switch doesn't work

I own a 2005 4X4 Blazer. I have daytime running lights and insterment panal lights but when I turn the exterior lamp switch to "parking lamps" or "headlamps" nothing happens... no marker lights or taillamps. The manual says to check the internal circuit breaker. Where is this or is it the same as the fuse box? If it is the same as the fuse box is it the one in the dash on the left of the steering wheel or the one under the hood? Thank you for your time.
Monique

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Just a Word to the Wise----I recently Sold My 2000 Blazer (THANK GOD I FOUND A BUYER)!!!! You need to look at the Recalls and Complaints Online on the Chevrolet Blazer 2000 and Up! You could literally read for MONTHS! Mine was Great for the First 15000 Miles and then it went to POT----Bought this for My Wife to Drive cause She liked it and did not look it up first. (BIG MISTAKE) The First thing to go was the Fuel Gauge Then, Rest of Guages, Seats Broke, Tranny Died 3 Times, Brakes Failed 4 Times, Lights Stopped Working, ON and ON and ON!!!! GM will NOT Honor the Recalls and the Parts are Sky High to Bye and Fix it Yourself. You REALLY Should Get Rid of it A.S.A.P. and avoid the Pain that is Coming! FYI The Trade in Value of it is only about 1,500 to 2,500 Dollars in ANY Condion! Thought you Might like to Know!

Posted on Dec 30, 2008

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Can anyone tell me where the drl module is located on a 2000 Chevy Blazer


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2000. Where is fuse for tail lights?


Do your headlamps work ?
Park/Marker/License/Tail Lamps
Voltage is applied to the turn/headlamp switch at all times. When the turn/headlamp switch is in the PARK or the HEAD position, voltage is applied to the following components:
?€¢
The park lamps


?€¢
The marker lamps


?€¢
The tail lamps


?€¢
The license lamp

The front marker lamps are grounded through the turn filament of the respective front park/turn lamp. The front marker lamps light as a result.
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?€¢
The automatic lamp control relay is grounded.


?€¢
The headlamps turn ON. Refer to Headlights/Daytime Running Lights (DRL) Circuit Description .

The lamps turn OFF when the BCM does not ground the park lamp relay or the automatic lamp control relay. This action is caused by the following conditions:
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The available light reaches a predetermined level.


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The ignition switch is turned to the OFF position

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Why aren't parking lights working?


Park lamp fuse 20amp located in the under hood fuse box .DRL control module
Daytime Running Lamps (DRL) Control Module
Right of the steering column, behind the IP
Park, Sidemarker, Tail and License Lamps
Voltage is applied continuously to the PARK fuse to the headlamp and the instrument panel (IP) lamp dimmer switch through CKT 1340.
When the headlamp and the (IP) lamp dimmer switch is in the PARK or HEAD position, voltage is applied to CKT 9 thus activating the following lamps:
• The park lamps
• The side marker lamps
• The tail lamps
• The license lamps
The park/turn lamps are the only lamps that do not activate yet receive a current from CKT 9. The park/turn lamps do not activate because the voltage drop across the front side marker lamps is much higher than that across the turn lamp filaments Step
Action
Normal Result(s)
Abnormal Result(s)*

1
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
The following lamps light:
• The license plate lamps
• The taillight lamps
• The front side marker lamps (Domestic)
• The front parking lamps (Domestic)
The headlamp position lamps (Export)
Refer to Park Lamps Inoperative
Park Lamps Inoperative
Step
Action
Value(s)
Yes
No

1
Inspect the PARK LP fuse.
Is the fuse open?
--
YES - Go to Step 2
NO - Go to Step 3

2
Repair a short to ground in CKT 1340.
Is the repair complete?
--
Go to Exterior Lights System Check
--

3
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal R and ground.
Did the test lamp light?
--
Go to Step 7
Go to Step 4

4
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal O and ground.
Did the test lamp light?
--
Go to Step 5
Go to Step 6

5
Replace the headlamp/IP lamp dimmer switch. Refer to Headlamp Switch Replacement .
Is the repair complete?
--
Go to Exterior Lights System Check
--

6
Repair the following conditions in CKT 1340 between the PARK LP fuse and the headlamp and the IP lamp dimmer switch harness connector terminal O:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check
--

7
Repair the following conditions in CKT 9 between the headlamp and the IP lamp dimmer switch harness connector terminal R and S204:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check

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1 Answer

On my 1999 Olds Intrigue I have never had to turn on my lights at night. All night time driving lights come on automatically until recently. Now only the headlights come on.To get the dash lights,tail...


Without testing i would say you have DRL control module problem , But that would just be a guess .
In the night mode, the DRL ambient light sensor senses darkness. Then, the DRL module turns off the front turn lamps and turns on the headlamps through circuit 10. The DRL module also turns on the park, side marker, license, and tail lamps. If the engine should stall with the DRL control module in the night mode, the DRL control module will turn off the headlamps and leave the side marker, park, license and tail lamps on while the engine is being cranked. The headlamp switch operates as usual.
The Daytime Running Lamps (DRL) control module is designed to automatically operate exterior lights depending on outside light conditions. The DRL control module operates in two modes, the day mode and the night mode. In the day mode, the DRL ambient light sensor senses daylight. Then, the DRL control module turns on the front turn lamps (non-flashing) if under the following conditions:
• The ignition switch is on.
• The headlamps switch is in the OFF position.
• The park brake is released.

The brightness of the Vacuum Fluorescent (VF) displays is controlled by two signals: the park lamps on signal (circuit 230) and the VF dimming signal (circuit 308). With the park lamps on, the VF display of the radio, heater, A/C control (with RPO CJ2) and the instrument cluster will dim for nighttime viewing. When the park lamps on signal is not present (park lamps off), the VF displays are at high brightness for daytime viewing. When the park lamps are on, the I/P lamp dimmer switch provides a signal (VF Dimming Signal circuit 308) which controls the brightness of the VF displays when the I/P lamp dimmer switch is adjusted.

Do the Daytime running light's work ?

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1 Answer

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No day lamps working


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1996 chevy blazer w/daytime druving light. Daytime driving lights do not function, when switched on low beams will go on and then go off on there own, when switch off and on again same result. the longer...


The wiring for these headlights is complicated. The body control module (BCM) controls whether the headlights should be on or off depending on the ambient light sensor readings. Your headlight switch should override this if switched to on - if it doesn't do this, the headlight power relay may be faulty.
The daytime running lamps (DRLs) are also controlled by the BCM and a DRL relay, also controlled by readings from the ambient light sensor. If they will not come on, the DRL relay may be faulty.
However, the root cause could be a fuse, faulty light sensor, headlight switch, or BCM. I would start by checking the fuses and checking/replacing the two relays.

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Which fuse controls auto lamp feature in 2002 Ford F350?


Principles of Operation
The autolamp system provides light-sensitive automatic on/off control of the headlamps and parking lamps controlled by the vehicle security module when the headlamp switch is in the autolamps position. When the ignition switch is turned to the RUN or START position with the autolamps feature already enabled and the ambient light level is dark, the vehicle security module will request the headlamps and parking lamps be turned on. When the autolamps are disabled, the vehicle security module will request the headlamps and parking lamps to be turned off, regardless of the ignition switch position. When the vehicle security module has turned on the exterior lamps and the ignition is turned to the OFF or ACCY position, the exterior lamps will remain on for an additional 20 seconds.
When the autolamps have been enabled and the ignition switch is in the RUN/START position, the vehicle security module will request that the exterior lamps be turned on or off based on ambient light level. If the vehicle enters darkness for at least 15 seconds, the vehicle security module will request the exterior lamps on. If the vehicle enters light for at least 15 seconds, the vehicle security module will request the exterior lamps off. By delaying turning on and off the exterior lamps during short periods of darkness and light, the vehicle security module prevents the exterior lamps from flashing on and off.
Inspection and Verification
  1. Verify the customer concern by operating the autolamps.
  1. Visually inspect the following for obvious signs of mechanical and electrical damage.

    Visual Inspection Chart Mechanical Electrical
    • Headlamp switch
    • Central junction box (CJB) fuses:
      • 19 (5A)
      • 56 (30A)
    • Circuitry
    • Headlamp bulb
    • Daytime running lamps (DRL) full relay No.1 (if equipped)
    • Vehicle security module
    • Photocell

  1. If the concern is not visually evident, determine the symptom and proceed to the Symptom Chart.
------------------------------------------
  • The autolamps are inoperative—do not operate correctly
  • Central junction box (CJB) fuse(s):
    • 19 (5A).
    • 56 (30A).
  • Circuitry.
  • Photocell.
  • Headlamp switch.
  • Vehicle security module.
------------------------------------------------------------------
  • The autolamps are inoperative—do not operate correctly
  • Central junction box (CJB) fuse(s):
    • 19 (5A).
    • 56 (30A).
  • Circuitry.
  • Photocell.
  • Headlamp switch.
  • Vehicle security module.
please rate if if this helps.

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