Turn Signal Problems — GMC/Chevrolet Trucks?

  • Here are some steps you can take to troubleshoot the problem: First, check the bulb. You’ll need to gain access to the bulb through the engine compartment (front light), trunk (rear light) or by removing the lens itself. Access changes depending on model. If necessary, consult your vehicle repair manual.

What is the most common cause of turn signal problems?

Check for damaged or burned-out bulbs in all turn signals on that side, for example, the ground on either light can get damaged. Another most common cause is corrosion in one of the bulb sockets. Many vehicles use turn signals wired in parallel so that if one goes out, it doesn’t take another with it.

How do you diagnose a bad turn signal switch?

Symptoms of a Bad or Failing Turn Signal Switch

  1. Turn signal indicator continues to blink when the steering wheel returns to the center.
  2. Turn signal lights don’t continue flashing unless turn signal lever is held down.
  3. Left or right turn signals or the Hazard Warning Light not working properly.

What would cause turn signals to stop working?

The usual cause of inoperative turn signals is a defective bulb or flasher unit. Prior to performing extensive diagnosis, check the vehicles fuses to ensure they are not blown. Some vehicles utilize two fuse boxes, one in the passenger compartment and another under the hood.

What happens when a turn signal relay goes bad?

The most common symptom of a bad or failing turn signal / hazard flasher is hazards or turn signal lights that do not function. If the flasher breaks or has any internal issues it can cause the lights to malfunction, or not respond at all when the turn signal lever or hazard light button are pressed.

How do you diagnose a turn signal?

Check for a blown circuit fuse.

  1. Verify that circuit connections are not loose, corroded or unplugged.
  2. Inspect the wiring harness or terminals for the rear section of the circuit.
  3. Check for a bad connection between the turn signal switch and the flasher or between the flasher and the ignition switch.

How much does it cost to replace turn signal switch?

Turn Signal Switch Replacement Cost – RepairPal Estimate. Labor costs are estimated between $80 and $101 while parts are priced between $145 and $150. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.

What does the turn signal switch control?

Remove the Multifunction Switch Once known as a turn signal or blinker switch, this lever now also controls headlights, high beams, emergency flashers, wipers and washers. No wonder it’s called the multifunction switch (MFS) these days. Unfortunately, the MFS has a fairly high failure rate.

Where is the blinker relay switch located?

It is usually located under the driver’s side of the dash, and is wired in-line with the turn signal lever and hazard switch buttons.

Why do my hazards work but not my turn signals?

Turn signals only work when the ignition is on; hazard lights work whether the ignition is on or not. The two systems have separate power supplies, so they have separate fuses. You may have a blown fuse. Hazard lights and turn signals use the same bulb, so it is not the bulb, the lamp, or the cables to them.

Which fuse controls turn signals?

Look for fuse 16. This fuse controls the front and rear turn signals. If the small piece of metal connecting the two blades of the fuse is broken or melted, the fuse is bad and you must replaced it. The state of the fuse is evident by the strip of metal along the back of the fuse, even when installed.

How do you test a turn signal relay?

How to Test a Flasher Relay

  1. Access the junction box where your flasher relay is located.
  2. Turn your car or truck’s ignition on.
  3. Connect the clip of the test probe to any good ground.
  4. Remove the relay and locate its control and power terminals.
  5. Turn your multimeter on and set it to the ohms setting.
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How can you tell if a turn signal bulb is bad?

Symptoms of a Bad or Failing Turn Signal Bulb

  1. Turn signal indicator in the instrument cluster comes on solid and does not blink.
  2. Turn signal indicator blinks very fast.
  3. Both turn light bulbs on the left, or both turn light bulbs on the right, do not blink.
  4. Both right and left turn indicators do not work properly.

How do I know if my blinker fuse is bad?

Fast or Slow Flashing Most often, if all four turn signals are going too fast or too slow, it means the flasher is bad. If only the signals on one side do it, it may be one of the bulbs. The bulbs determine how much power goes through the flasher, and thus how quickly it heats up.

How to fix a Turn Signal Relay in a Chevy Silverado

When you are experiencing difficulties with your turn signals, replacing the turn signal relay or flasher is a reasonably simple solution. It is possible that you will not need to replace the flasher relay and that the problem is only a defective bulb on one side or the other. Follow the steps on a simple checklist to resolve the issue and get your truck back on the road.

Step 1

Make sure to start the car so that you don’t run down your battery while testing the lights. Ask a buddy to assist you in checking the lights. You sit in the automobile and operate the lights, with the lights indicating which lights are turned on and which lights are turned off. Check the turn signals one at a time, and then the danger lights to ensure they are working properly. Make certain that your companion checks for the lights if you hear the lights working at a slower or quicker speed than normal.

Step 2

Check each of the turn signal light bulbs, paying particular attention to the bulbs that were discovered to be inoperative. In the majority of cases, a burned-out bulb is the source of the problem with the turn signal relay.

Step 3

Replace any burned-out bulbs and evaluate the lights to ensure they are working properly. In the best-case scenario, this will resolve your issue with the turn signals completely. If this is the case, the next step is to check the fuses for the turn signals and hazard lights. The fuses for these are placed on the driver’s side of the cab, to the left of the steering wheel, on the left side of the dashboard. They should be located in a fuse box that is placed to the exterior of the cab’s wall.

Step 4

To check for turn signal lights or hazard lights, open the fuse box and refer to the schematic on the underside of the lid to locate the fuses that are responsible for those functions. If all of these fuses are good, the flasher unit or the multi-switch on the steering column is most likely the source of the problem.

Step 5

The flasher unit may be found above the fuse box on the left side of the dash, beneath the left side of the dashboard. The flasher is a square device that has the appearance of a relay. It will be equipped with a receptacle that will be located independently from the fuse box. Remove the flasher and run it through its paces to make sure it works. It’s possible that you’ll need to take this to an auto parts store for testing. If the flasher is faulty, it should be replaced. Check to see that your turn signals are working properly.

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Remove the steering wheel from the vehicle using a steering wheel removal tool, and then remove the plastic covering that covers the ignition switch from the vehicle.

Make certain that all of the wires are connected to the identical places on the new switch. Assemble the interior covers and reinstall the steering wheel as needed. Check the operation of your turn signal lights once more. What You’ll Need to Get Started

  • New light bulbs, new fuses, a new flasher unit, a steering wheel puller, and a new multi-switch have all been installed.

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Problem solved After all, I suppose I should have followed up on the turn signal issue. It turned out to be a flasher after all. It was a straightforward problem, but no one could tell out where the silly item had gone missing. It took my brother, who is a mechanic, around 15 minutes of searching before giving up and telling me to take it to a mechanic’s shop. In addition, the shop looked for approximately an hour (with multiple mechanics taking turns) and came up empty-handed. They did not charge me and expressed their regret excessively.

  1. I took everything out of the car, including the ashtray, glove box, and everything else I could find, and sure enough, it was there.
  2. It was the ideal camouflage.
  3. By feeling about up there, I was able to locate it more or less by accident.
  4. I’m not sure what they were thinking at the time.
  5. Anyway, I replaced the flasher with a new one and everything was back to normal.

Chevrolet C/K 1500 Questions – right turn signal won’t work when lights are on

The 1992 Chevrolet C/K 1500 Silverado LB RWD was inquired about bywags on December 20, 2008 at 10:02 a.m. MaintenanceRepair is the sort of question. When the lights are turned on, my Chevrolet 1500’s right turn signal does not illuminate; yet, when the lights are turned out, it illuminates all four blinker lights. When the lights are turned off and I press the brake pedal, the parking lights come on as well. Can somebody tell me what is going on?

12 Answers

Eric provided a solution 12 years ago. However, my issue is on the left side of the screen. This was deemed to be helpful by 26 people. You might try checking for a faulty or frayed ground wire, or if you have installed wiring harnesses for a tow behind trailer, you could try unplugging them and seeing if the problem persists. This was reported to be helpful by 7 people. Hello, did you examine the wiring harness to see if there were any naked wires or if they were attached to the front and rear wheels?

  • This was reported to be helpful by 2 people.
  • Both the front and rear blinkers are powered by a two-phase bulb with two filaments in each of them.
  • Additionally, when you use the brakes, the blinker indication on the dashboard may illuminate (doesnt allways happen).
  • Kevin provided a solution 9 years ago.
  • Also look for bulbs that are too close together.
  • When I turn off the lights on the signals, nothing happens, and when I turn off the lights on the brake lights, nothing happens.
  • We experienced the same issue with our 1991 Chevrolet Silverado 4.3 litre V-6.

We’ll search for a short in the towing wires to see if that’s the problem.

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According to the information provided above, trailer light modules short out on a regular basis and can produce a variety of lighting problems.

This was reported to be helpful by 8 people.

This was reported to be helpful by 6 people.

When my lights were on, my right blinker would remain steady, however when my lights were out, my danger lights and dash would strobe.

Having corrected the problem, I created super flash for both signals.

This was reported to be helpful by 6 people.

And it was the towing plug that was tucked beneath the rear of my truck. I’m experiencing the similar problem, except I don’t have a towplug. My car is a 1992, and the driver’s side tail light is not working. I’ve replaced the bulb, but nothing has changed. I could appreciate some assistance.

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Chevrolet Silverado 1500 Turn Signal Problems

When the vehicle is in motion, and I attempt to make a left turn onto a street or into a parking lot, a warning for service stabilitrak will illuminate, the steering wheel will lock, the air conditioning will turn off, the lcd radio display will go blank, and my headlights will flicker and/or turn off. This will cause the vehicle to lose power and crash. Occasionally, the vehicle will not start. So far, it’s come close to causing two or three accidents. Another issue is that if I am going at highway speeds and I use my turn signal, the cruise control will be turned off, the radio lcd display will flicker, and a service stabilitrak notice will be displayed.

Clearly, there is an electrical problem.

Despite the fact that this has been a continuous issue, it is becoming worse.

See a list of all the issues with the 2014 Chevrolet Silverado 1500.

Brake/hazard/turn signal problems

Hello, I’m experiencing issues with my brake lights, danger lights, and turn signals. When I turn the vehicle on (acc on, engine off), my brake lights don’t function (sometimes the right one does, sometimes it doesn’t – it appears to be dependent on how recently I touched the turn signals/hazards (within the previous 10 minutes or so). When I switch on the hazards, just the right side light blinks, while the left side light does not – and when I brake, only the right side light brakes. When I switch on my turn signal (whether it’s to the right or left, it doesn’t matter), both lights begin to flicker simultaneously (because the hazards are on).

When I have one of the turn signals turned on and I use the brake, both turn signals illuminate (one turn, one brake).

However, the hazards will not illuminate, the brake lights will not illuminate, and the right turn signal will not illuminate.

As a result, I went back to the previous one.

The bottom light is the backup light (which never works), the side light is a running light (which comes on whether I lift the stick half-way or all the way), and the top right light is the hazard/brake/turn light.

My truck is a 1985 Chevrolet Silverado with a 6.2-liter diesel engine.

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