Why is the high beam not working on my Silverado?

High beam not working on Silverado truck General Questions sailorNovember 3, 2008, 4:56pm #1 For a few weeks I am borrowing a Chevy Silverado truck whose high beam lights are not working and I’d like to take a try at fixing it.

Where is the low beam relay on a GM Truck?

The low beam relay is on the bulb side of the BCM, and so is the high beam, as it appears the high beam relay is operated by a relay on the BCM (which may not be a removable relay). Don’t see why it is also labeled PCM. Click to expand… soon as I get one, i’ll get on it. I’ll post later what I find. Thanks for your assistance!

What’s the circuit diagram for a Chevy 1500?

The above typical headlight circuit diagram applies to the 1996, 1997, 1998, and 1999 Chevrolet/GMC 1500, 2500, and 3500 pick-up with Quad headlights. NOTE: If you have QUAD headlights, you’ll have 2 bulbs for lighting in each headlight assembly (1 LO beam, 1 HI beam).

What’s the headlight circuit diagram for a 1996 Chevy?

The above typical headlight circuit diagram applies to the 1996, 1997, 1998, and 1999 Chevrolet/GMC 1500, 2500, and 3500 pick-up with Quad headlights. NOTE: If you have QUAD headlights, then you’ll have a separate bulb for the LO and Hi beams.

Where is the low high beam headlight dimmer switch?

As mentioned at the beginning of the article, the Low-High Beam Headlight Dimmer Switch is part of the Turn Signal Assembly. If you have already taking the steering column covers off, you’ve noticed that the turn signal switch has a lot of wires connecting to it.

Where is the dimmer switch on a Chevy truck?

Older models of Chevy trucks use a dimmer switch that is repairable. New styles are not repairable, and replacement is the only option. General Motors produced the adjustable switch for decades, and it is located on top of the steering column.

What happens when the low beam dimmer doesn’t work?

The most common (and well, probably the only one) is usually the low beam headlights don’t work. In my personal experience, when the Low-High Beam Headlight Dimmer Switch has failed, you’ll only be able to roll around using the high beams only. Well, in this article, I’ll show you how to test it in a step-by-step way.

Why is my high beam light not working?

And if the circuits are energized but the bulbs don’t light up, it’s a 99% probability that the bulbs are faulty. Test for power at the headlight connectors (make you’re checking the high-beam wires, not the low-beam ones) or replace the bulbs.

What do you need to know about GM security module?

Connect a battery charger to the battery to ensure power is available while programming. Both the IPC/BCM and PCM must be working and communicating with each other. Observe the “SECURITY” indicator After 10 minutes the “SECURITY” indicator light will turn off.

How to turn on security light without starting engine?

Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “OFF” position.

How does a high beam light bulb work?

Get familiar with the fuses and relays that control your headlights. The headlight switch usually doesn’t control the headlight bulbs directly, but through one or more relays. The headlight switch powers a relay, which powers the headlight bulb. This protects the headlight switch from the high current used by the high beam headlights.

Why are my high beam headlights not working?

In the case of high-intensity discharge (HID) headlights, or Xenon headlights, there’s an additional component. To get the xenon and salts to plasma state, the HID generator bumps the voltage up to 30,000 V, then stabilizes around 90 V when the bulb is in operation. If the generator fails, the bulb won’t light.

Do you need high beams or low beams?

Low beams are the bare minimum, for safety’s sake, but high beams are an absolute must for night driving over 25 mph. For most vehicles, headlights are a basic electrical system, controlled by switches and relays to turn them on and off.

Why are there no Hi beams on my Silverado?

Recently my 2010 Silverado no longer has high beam headlights, low beams work fine, fogs fine. Tried turning the switch from auto to manual, still nothing. Checked all the fuses, they all seem fine. Not sure where to go from here. I don’t think both bulbs quit simultaneously, but I guess this is possible.

Can a 2010 Silverado have high beam headlights?

New to this forum, seems like there is lots of good advice and tips here. Recently my 2010 Silverado no longer has high beam headlights, low beams work fine, fogs fine.

What’s the difference between low and high beam headlights?

Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. Required by law around the world, low beam and high beam headlights help you see and be seen, in all kinds of weather and at any hour of the day.

Why are the high beams on my car not working?

If the high beams function but don’t seem to light your way, especially if you drive an older vehicle with polycarbonate headlight lenses, your car may be a victim of headlight fogging. This isn’t simply scuffing, but an actual chemical change from polycarbonate’s exposure to solar ultraviolet light and caustic exhaust emissions.

When did the GMC Sierra have the most problems?

The model years with the most problems reported were 2004 and 2007, with more than 60 complaints each year, followed by 2002, 2003, 2005, and 2010, with more than 40 each year. Of the 112 problems, five different complaints have been reported 90 or more times.

When did the GMC Sierra truck come out?

The GMC Sierra is the fifth-most popular truck in the United States, with more than 230,000 trucks sold in 2019. General Motors introduced the GMC Sierra and its twin, the Chevrolet Silverado, in 1998.

How much is a 2007 GMC Sierra 1500 Classic?

How much is a used 2007 GMC Sierra 1500 Classic? In CARFAX Used Car Listings, you can find a used 2007 GMC Sierra 1500 Classic for sale from $9,977 to $16,995. The average selling price of this vehicle on CARFAX is $13,288. Is the 2007 GMC Sierra 1500 Classic a good car?

What kind of rating does GMC Sierra 1500 get?

CARFAX used car owners give the 2007 GMC Sierra 1500 Classic 4.7 stars out of 5, with a total of 15 reviews. Reviewers especially like the 2007 Sierra 1500 Classic for its performance and exterior.

What are the trim levels of a GMC Sierra?

The GMC Sierra is offered in five trim levels from basic to sinfully luxurious. The base model is the WT (work truck), and, ascending the food chain are SLE, SLE2, SLT and Denali.

Why is the high beam not working on my Silverado?