Troubleshoot Brake Light Problems on a Chevy Silverado

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Prior to Fix Brake Light Problems on a Chevy Silverado You should know that the cause is most likely a short circuit or bad brake lights on your Chevrolet Silverado, although it may be a simple problem.

Most of these failures can be blamed on little or no user maintenance of the brake system. In addition, there is the possibility that the failure is due to a hidden or open short somewhere in the middle of the circuit.

Fix Brake Light Problems on a Chevy Silverado

Fix The Brake Light On A Silverado
2015 Chevrolet Silverado LTZ Z71

Don’t be too hasty, before you cut any wires, you should be aware that most older model trucks (if that’s the case for you) have the same bulb filament used for both the brake function and the stop function. turn indicator.

For that to work, the brake cable goes to the turn indicator, so when you turn on the turn signal, it turns off that side’s brake light signal so the two signals don’t collide. So don’t just check the brake light. You should also check the turn signals.

Before you start pulling out wires, start ruling out problems in the most obvious places to get the lights working again.

1- Check a single light that does not work

You can start troubleshooting this problem at the malfunctioning brake light assembly if only that light appears to be damaged. Remove the cap and check the bulb for open filaments or damage.

Carefully examine the plug and connections for corrosion, loose or broken wires. Test the black/ground wire connection by using a jump wire to connect the ground on the light socket to a good chassis ground on the vehicle and have a helper operate the brake lights.

After confirming that the bulb, socket, and connections are all good and that no electrical current is reaching the bulb, begin tracing and testing the electrical wires back to the source using a test light to find a possible fault. short circuit opens it.

2- Check the brake lights circuit

Start at the underhood fuse box and make sure the brake light fuse is not blown, the terminals are free of corrosion, and the connections are tight. Next, check the brake light switch on the firing pedal arm.

Reprobe the switch terminals with a test light. Only one of the switch terminals should turn on the test light. When you step on the brake pedal, both terminals of the switch should turn on the test light. If only one of the wires lights up the test light, unplug the switch and jump both connections on the connector.

If the brake lights come on, change the switch. When there is no power to the switch, follow the orange wire to the fuse block under the hood and look for a possible open or short.

If electrical current is getting to the switch but the lights don’t work, even if the switch is OK, follow the current flow with your test light to the brake lights and look for a possible open or short in the circuit.

A blue wire connects the brake light switch to the taillight junction block. Also a brown and a light blue wire connect the rear junction block to the left rear brake light; A brown to white and a light blue wire connect the rear junction block to the right rear brake light. The black wires from the bulbs provide the ground connections.

Troubleshoot The Brake Light On A Chevrolet Silverado
Chevrolet Silverado

It may interest you: How to Turn Off the ABS Brake Lights on a Chevy Silverado

Tips

Here are some helpful tips to fix brake light problems on a Chevy Silverado, see what they are:

  • If after having done this work the brake lights did not work but the turning lights did, that means that the wiring of the bulbs is fine and that the wiring that works in the box is in perfect condition, in addition to the contacts of the bulbs work fine.
  • You probably have to check brake light switchthe fuse, and for a truck, any wiring done for the trailer hitch so you can make sure it’s okay.
  • The most common reason taillights of any kind fail is rotten wires. They pass through the wire cover from front to back along the inside of the frame to the left taillight. Since in this way they are exposed to the elements.
  • You should check along the route to see if there are rotten, broken or degraded cables. Most of the conflict points would be at anchor points, junctions, etc. If you find a faulty cable, just run a new one from the engine bay to the rear and splice it. It is a cheap solution and takes much less time.
  • Also could be a relaythe box is in the engine compartment and the relay will be marked, but that is unlikely to be the problem.

Prior to Fix Brake Light Problems on a Chevy Silverado You should know that the cause is most likely a short circuit or bad brake lights on your Chevrolet Silverado, although it may be a simple problem.

Most of these failures can be blamed on little or no user maintenance of the brake system. In addition, there is the possibility that the failure is due to a hidden or open short somewhere in the middle of the circuit.

Fix Brake Light Problems on a Chevy Silverado

Fix The Brake Light On A Silverado
2015 Chevrolet Silverado LTZ Z71

Don’t be too hasty, before you cut any wires, you should be aware that most older model trucks (if that’s the case for you) have the same bulb filament used for both the brake function and the stop function. turn indicator.

For that to work, the brake cable goes to the turn indicator, so when you turn on the turn signal, it turns off that side’s brake light signal so the two signals don’t collide. So don’t just check the brake light. You should also check the turn signals.

Before you start pulling out wires, start ruling out problems in the most obvious places to get the lights working again.

1- Check a single light that does not work

You can start troubleshooting this problem at the malfunctioning brake light assembly if only that light appears to be damaged. Remove the cap and check the bulb for open filaments or damage.

Carefully examine the plug and connections for corrosion, loose or broken wires. Test the black/ground wire connection by using a jump wire to connect the ground on the light socket to a good chassis ground on the vehicle and have a helper operate the brake lights.

After confirming that the bulb, socket, and connections are all good and that no electrical current is reaching the bulb, begin tracing and testing the electrical wires back to the source using a test light to find a possible fault. short circuit opens it.

2- Check the brake lights circuit

Start at the underhood fuse box and make sure the brake light fuse is not blown, the terminals are free of corrosion, and the connections are tight. Next, check the brake light switch on the firing pedal arm.

Reprobe the switch terminals with a test light. Only one of the switch terminals should turn on the test light. When you step on the brake pedal, both terminals of the switch should turn on the test light. If only one of the wires lights up the test light, unplug the switch and jump both connections on the connector.

If the brake lights come on, change the switch. When there is no power to the switch, follow the orange wire to the fuse block under the hood and look for a possible open or short.

If electrical current is getting to the switch but the lights don’t work, even if the switch is OK, follow the current flow with your test light to the brake lights and look for a possible open or short in the circuit.

A blue wire connects the brake light switch to the taillight junction block. Also a brown and a light blue wire connect the rear junction block to the left rear brake light; A brown to white and a light blue wire connect the rear junction block to the right rear brake light. The black wires from the bulbs provide the ground connections.

Troubleshoot The Brake Light On A Chevrolet Silverado
Chevrolet Silverado

It may interest you: How to Turn Off the ABS Brake Lights on a Chevy Silverado

Tips

Here are some helpful tips to fix brake light problems on a Chevy Silverado, see what they are:

  • If after having done this work the brake lights did not work but the turning lights did, that means that the wiring of the bulbs is fine and that the wiring that works in the box is in perfect condition, in addition to the contacts of the bulbs work fine.
  • You probably have to check brake light switchthe fuse, and for a truck, any wiring done for the trailer hitch so you can make sure it’s okay.
  • The most common reason taillights of any kind fail is rotten wires. They pass through the wire cover from front to back along the inside of the frame to the left taillight. Since in this way they are exposed to the elements.
  • You should check along the route to see if there are rotten, broken or degraded cables. Most of the conflict points would be at anchor points, junctions, etc. If you find a faulty cable, just run a new one from the engine bay to the rear and splice it. It is a cheap solution and takes much less time.
  • Also could be a relaythe box is in the engine compartment and the relay will be marked, but that is unlikely to be the problem.

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