Question about 1996 Pontiac Grand Am

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My headlights when out while driving at night.the bright icon on the dash blinks.is it the relay switch inside the panel of fuses that says HDLP?

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  • Pontiac Master
  • 1,348 Answers

Check the bulbs. then the fuses then check the daytime running light module.

Posted on Apr 26, 2010

Testimonial: "I checked the bulbs and the fuses first.I pulled the relay fuse out.I hope this is what your calling a running light module.I'll check it out.Thanks"

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How can the lights be disabled that stay on all the time ?


Have you tried replacing the headlamp power relay in the underhood fuse/relay box ?
Headlights Circuit Description
Voltage to the headlamp switch is available at all times from the HDLP SW fuse 7 through CKT 1940 (ORN). When the headlamp switch is turned to the HDLP position, the headlamp power relay coil is energized through CKT 352 (WHT). A signal is also sent to the body control module (BCM) that the headlamp switch is ON. When the headlamp switch is in the AUTO or PARK position, the ambient light sensor (located in the right speaker grill) senses either daylight or darkness and sends the signal to the BCM. When the Ambient Light Sensor detects a dark condition, the BCM produces a signal that will energize the headlamp power relay through CKT 352. The relay coil is grounded through terminal F7 connector 2 of the UBEC to CKT 350 (BLK) to G102. When the headlamp power relay is energized the relay supplies power to the LT HDLP and RT HDLP fuses. The RH low beam headlamp receives current through CKT 198 (DK BLU) from the RT HDLP fuse. The LH low beam headlamp receives current through CKT 712 (YEL/BLK) from the LT HDLP fuse. Both headlamp low beam bulbs are grounded by CKT 524 (PPL) through the UBEC to the multifunction switch (low position) contacts through CKT 10 (YEL) to the headlamp grounding relay in the body relay block through the normally closed contacts to CKT 1850 (BLK) to G200.

Dec 22, 2015 | 1998 Chevrolet S-10 Pickup

1 Answer

Headlights will not come on 02 s10


Have you checked fuses ? The Instrument panel fuse block , Fuse Block - I/P
LH of the I/P, near the door jamb switch - LF , fuse # 7 HDLPSW 10amp.
In the underhood fuse / relay box - Headlamp power relay , RT HDLP fuse 15amp LTHDLP fuse 15amp.
Battery positive voltage to the headlamp switch is supplied by the HDLP SW fuse in the IP fuse block. When the headlamp switch is in the HDLP position, the headlamp power relay coil is energized. A voltage signal is also sent to the body control module (BCM) signaling that the headlamp switch is activated. The headlamp power relay coil is grounded at G102. When the headlamp power relay is energized, the relay supplies battery voltage to the LT HDLP and RT HDLP fuses. Both low beam headlamps are grounded by the multifunction headlamp dimmer switch in the low beam position through the normally closed headlamp grounding relay in the body relay block to G200.
High Beams-Except ZR2 Battery positive voltage to the headlamp switch is supplied by the HDLP SW fuse in the IP fuse block. When the headlamp switch is in the HDLP position, the headlamp power relay coil is energized. A voltage signal is also sent to the body control module (BCM) signaling that the headlamp switch is activated. When the headlamp switch is in the AUTO or PARK position and the ambient light sensor detects darkness, the BCM produces a voltage signal that will also energize the headlamp power relay. The headlamp power relay coil is grounded at G102. When the headlamp power relay is energized, the relay supplies battery voltage to the LT HDLP and RT HDLP fuses. The RH high beam headlamp receives current directly from the RT HDLP fuse. When the headlamp switch is in the HDLP position, the BCM removes the ground path to the headlamp grounding and DRL relay coils. This allows current to flow to the LH high beam headlamp through the normally closed contacts of the DRL relay. Both high beam headlamps are grounded by the multifunction headlamp dimmer switch in the high beam position through the normally closed contacts in the headlamp grounding relay to G200. A ground signal is also sent to the BCM in order to confirm high beam operation.

In the i

Mar 01, 2015 | Cars & Trucks

1 Answer

Is my 2007 Lincoln Navigator (HID headlights) equipped with HIGH BEAMS? If so - they don't seem to work. Allow me to explain; 1. The headlights come on automatically in low light conditions. 2. The...


First of all are your headlights a double filament type headlight? If yes then I would suspect that a power wire to the high beams is broken or shorted. If your high beams are a separate set of lights from your regulars running lights then either the high beams headlights are missing. or has a broken power wire or shorted or...You could check the fuse box under your dash and under the hood of the car to see if you have a fuse for the high beam lights.

Oct 28, 2013 | Cars & Trucks

1 Answer

When headlights come on the dash lights go out


It could be the fuse. Have you tried adjusting the dimmer switch for the dash panel.

Oct 05, 2012 | 1998 Chevrolet Blazer

1 Answer

1998 toyota corolla dash and shifter lights out fuse and relay good


sounds like you have a bad panel dimmer control. try turning the control from bright to dim very fast a few times then slowly, do this in a dark area or at night with the headlights on, you should see a flicker of light occasionally. If you don't see any light then it could be either the headlight switch or the dimmer control, if you DO see any light, then it's your dimmer

Nov 14, 2011 | 1998 Toyota Corolla

2 Answers

How do i fix my dashboard lights on my 1986 chevy nova?


Turn the light switch on and check your tail lights. Back then the tail and dash lights work on the same circuit inside the headlight switch so if one was out so was the other. If this is the case you need a new headlight switch. If not, there should be a fuse in your panel marked "instr". that's for the dash lights. Hope this helps.

Oct 31, 2011 | 1986 Chevrolet Nova

1 Answer

2001 GMC Sierra headlights won't come on. Located 3 each 10Amp fuses that were blown and replaced them, however, headlights didn't come on.


what fuses were blown and replaced? Theres a TBC fuse under the hood, along with a Headlamp Relay. Theres a R HDLP and LT HDLP fuses, make sure they are getting power, and are good. If the LT HDLP and RT HDLP fuses are good AND getting power, then the TBC fuse and the relay is good. then I would suspect the Hi-Lo dimmer switch bad. The LOW beam ground wire is YELLOW, the high beam ground is PURPLE. see if high beams work, if they do, then I suspect the dimmer switch is bad.

Dec 17, 2010 | 2001 GMC Sierra Crew Cab

1 Answer

2002 Escalade, headlights don't work, all other lights do? No brights or dims, fuses all seem to be ok, what would be the next item to check? I have been told the headlight switch but not sure how I would...


Make sure the TBC fuse is good in the fuse box under the hood. There is also a Headlamp relay, and fuses marked LT HDLP, and RT HDLP, If the RT HDLP and LT HDLP fuses have power, the headlight switch is good. Be sure battery power is present on both sides on these 3 fuses. If you ground the PURPLE or YELLOW wires at the bulbs, they should light. If they do, the one thing that the high and low beams have in common is the hi-low beam switch and the ground for the switch. The ground ends up at the lower left corner of the dash, under the windshield. The relay is a common relay and you will be able to find another one in the fuse box to swap for testing purposes.

Nov 13, 2009 | 2002 Cadillac Escalade

2 Answers

My 2004 Aveo's great! Except I have a question, how come there is no lighting to help me see the speedometer better at night?


There should be a switch on the left side of the dash for the lights there will be a dimmer switch there also it is most likely turned down adjust that switch to brighter that sould do it but if you have no lights at all then you have a issue inside your dashboard

Sep 03, 2009 | 2004 Chevrolet Aveo

1 Answer

No driving lights?


Hello there - I would suggest checking the fuse for your lights in the fuse box, and check under the hood for a fuse/relay box, and have the relay tested. If the fuses and relays are good, open the hood, and try to check the connection to the headlights and make sure they are securely connected. You also mentioned that when you push the headlights switch forward for brights, and turn on the night time head lights, and neither come on but the daytime lights do, makes me suspect the switch itself may be bad. I would first check the fuses and relays if any. Second, I would replace the bulbs (if replacable). Other than that, my last guess would be an electrical problem in the wiring somewhere. I hope this information helps you fix your lights. Thank you for your time and consideration in my suggestions/answers.

Apr 01, 2009 | 1996 Mazda 626

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