Question about Chevrolet S 10

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No high beams on a 1985 s-10

I have low beams but when I hit the switch for the high beams they turn off!!! what could the problem be???

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  • Chevrolet Master
  • 808 Answers

The headlamps could be burnt out but a easy test would be to remove the dimmer switch connector from steering column and jumper the power source to the high beam wire . this is a three wire connector on left side of column above the brake pedal.

Posted on Mar 21, 2014

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  • 2 Answers

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Posted on Jan 02, 2017

  • 193 Answers

SOURCE: high beams wont turn on.

First place to start is with headlight switch. I did have a case many years ago when both high beams were blown out at once, but this is rare. When you have the headlight switch out, jump power from te low beams to the high beam contacts. If high beams come on, replace switch.
Bill

Posted on Nov 19, 2008

  • 1 Answer

SOURCE: low beam headlights

Try swapping #45 cooling fan relay and #46 HDM (headlight driver module) relay in the underhood fuse block. These are solid state modules and are not like conventional relays.

Posted on Nov 21, 2008

j_del
  • 1586 Answers

SOURCE: INOP low beam and high beams

The problem is the headlight switch itself - it's one of the most common failures on these cars. The part, brand-new, is about $158 from ECSTuning.com. Replacing it involves removing the airbag and steering wheel - not difficult but a little nerve-wracking due to the power of the airbag.

If this is something you want to tackle on your own, reply back here and I can give you a step-by-step on doing the work yourself. Or you can go to a shop/dealer and just have them do it. They'll probably charge you at least two hours' labor, even though it's a 40 minute job. Let me know what you would like to do.

Posted on Dec 11, 2008

frcs68
  • 1605 Answers

SOURCE: The headlights are stuck on high beam.

pull on the signal lever toward you (ceter position). the signal lever controls the head lights either high beam or low beam. if you pull on the signal lever toward you again, you will have high beam temporarily. and if you push the signal lever towards the front, you will have the high beam locked.

Posted on Jan 12, 2009

  • 7353 Answers

SOURCE: low beams don't work - both out at the same time.

DID YOU CHECK THE BULBS?

Posted on Nov 04, 2009

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1 Answer

2007 chev sub head lights wont turn on


Do you know anything about automotive electronics ? Electronic control modules .
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch on input circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.
If the headlight switch is left in the ON position, the inadvertent power control feature will turn OFF the headlights approximately 10 minutes after the ignition switch is turned to the OFF position. If the driver places the headlight switch in the ON position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain ON until turned OFF or the battery runs dead.
The high beam indicator is illuminated when the instrument cluster receives a GMLAN serial data message from the BCM that the high beams are illuminated.
High Beams
The high beam headlamps receive voltage from the headlamp high relay located in the underhood fuse block. The BCM controls the relay on the headlamp high beam relay control circuit. High beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is grounded, the BCM grounds the headlamp high beam relay control circuit, illuminating the high beam headlamps. The right and left high beam circuits are independent and are fused independently in the underhood fuse block.
Low Beams - Standard
The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block.

Hooking up a factory scan tool an checking DTC'S - diagnostic trouble codes would be the very first step in trouble shooting this problem .
DTC B257A 00: Headlamp Switch Input Signal Mismatch
DTC 2575 00: Headlamp Control Circuit

Jun 30, 2017 | Cars & Trucks

1 Answer

Hi my name is Larry I have a 1998 Pontiac sunfire & my problem that I have is I have low beam. But no high beam.


It's probably the switch , but testing to know for sure is alwasy a good idea .

Headlamps Inoperative - High Beams
Step
Action
Value(s)
Yes
No
1
Did you perform the Daytime Running Lamps (DRL) System Check?
--
YES - Go to Step 2
NO - Go to Daytime Running Lights (DRL) System Check
2
Disconnect the turn/hazard headlamp switch connector C1.
Connect a fused jumper between terminal B of the turn/hazard headlamp switch assembly harness connector C1 and ground.
Do the high beam headlamps operate?
--
YES - Go to Step 3
NO - Go to Step 4
3
Replace the turn/hazard headlamp switch assembly.
Did you complete the repair?
--
Go to Daytime Running Lights (DRL) System Check
--
4
Repair the open in CKT 1200 between the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?

Daytime Running Lights (DRL) System Check
Step
Action
Normal Result(s)
Abnormal Result(s)*
1
Turn the headlamp switch to the HEAD position.
Turn the headlamp dimmer switch to the LOW position.
The low beam headlamps are ON.
The high beam headlamps are OFF.
Headlamps Inoperative - Low Beams
2
Turn the headlamp switch to the HIGH position.
The high beam headlamps are ON.
The high beam indicator is ON.
The low beam headlamps are OFF.
Headlamps Inoperative - High Beams
3
Turn the headlamp switch OFF.
Turn the ignition to ON.
Disengage the parking brake.
The high beam headlamps come ON at a reduced intensity in approximately 30 seconds.
Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.

Jan 13, 2017 | 1998 Pontiac Sunfire

2 Answers

Driver side headlight goes dim on high beam while passenger side is bright


bad connection or bad earth check all connection or bulb

Jan 24, 2016 | Cars & Trucks

1 Answer

Pontiac grand prix high beams work but not low beams


I have a 2008 Pontiac Grandprix GXP I had hit a deer in May the repairs were made in June of this year. Here is my problem the air bag light comes on while I'm driving the car and now I have no low beam lights. I have taken the car back to where the repairs were done, cause I think the problems are from the damages. I was informed today that there's no juice from the fuse box to the low beam switch. What would cause this?

Jan 02, 2012 | 2007 Pontiac Grand Prix GXP Sedan

1 Answer

No low beams high beams only when light switch is turned on. Have low beams with ignition on


Sounds like the low/high beam relay switch is not functioning properly. The relay should turn both high and low beams off when the ignition is turned off.

Dec 27, 2010 | 2003 Volkswagen Jetta TDI

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High beams won't turn off


high beam low beam switch in the colum could be gone

Feb 15, 2009 | 1995 Ford Taurus

2 Answers

High beams wont turn on.


First place to start is with headlight switch. I did have a case many years ago when both high beams were blown out at once, but this is rare. When you have the headlight switch out, jump power from te low beams to the high beam contacts. If high beams come on, replace switch.
Bill

Nov 19, 2008 | 2004 Ford Explorer Sport Trac

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