Q: I have a 1987 chevy blazer S10, replaced brake light switch still no brake lights, whats wrong?

asked by on October 06, 2017

I replaced my brake light switch still no brake lights 1987 chevy blazer S10

Electrical components are not working Inspection $79.99 - $99.99 Get a Quote

There is either a wiring break or perhaps excessive voltage drop on the circuit, that is a high enough resistance to prevent the required voltage from reaching the bulbs. Whatever the cause of the circuit failure, a Mechanic would simply trace the relevant circuits, using the wiring diagram in the Factory Service Manual, find the wiring, ground, termination or device fault that has caused an interruption in power and repair it. If you want these steps performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an electrical circuit/component diagnostic and the responding certified mechanic will get this resolved for you promptly. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Engine misfire

by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft position sensor, spark plugs, spark...

Loud grinding noise coming from front right tire.

It sounds like you may have a wheel bearing that may be close to locking or freezing up, which can generate an enormous amount of heat. This may eventually be enough heat to cause the wheel studs to break as...

Front wheel of truck won't move and making grinding noise

If you had your brakes removed and hub will not turn freely then it is the bearing in the hub. I would recommend replacing both front hub bearings since they both have equal amount of wear and the other side...

2007 Silverado - "Reduced Engine Power"

Hi there: Without being there, it's difficult to give you an idea as to what might be causing the 'chirping' noise or the Reduced Engine Power light. However, anytime you have an error or warning light come on and you...

Changed alternator and battert, light still on and car dieing

This may suggest a bad grounding issue or potentially a failing voltage regulator. This is a unit that regulates the charging of the battery by the alternator. Often times this will result in the alternator allowing too much power to...

engine will crank up but won't turn over

Hello and thanks for your question. With a vehicle that has only 7, 131 miles it should be working just fine. The engine will get hot after operating in driving conditions, especially if the engine was to be accelerated hard....

my vsc lights and trac off light comes on and when iput off the car and on again it goes off and then comes back after a while.

VSC stands for Vehicle Stability control. Trac stands for traction control. Both systems have various sensors that they share to obtain the information they need to do their job. If they are coming on together, it means there is a...

Misfire

The valve cover should be checked first to see if it is leaking oil into the spark plug tubes in the head. The leaking oil that's getting onto the spark plug wire and plug can cause it to arch to...

Codes p0441 and p0089

Those faults are two totally separate issues. The P0441 is an evaporative emissions system fault, and the P0089 is a fuel pressure regulation fault. This generation of Audi A4 was notorious for high pressure fuel pump problems. There were multiple...

Related articles

P2041 OBD-II Trouble Code: Reductant Injector Air Press Sensor Circuit Intermittent
P2041 means there is a malfunction in the reductant injector air pressure sensor circuit. This could be due to damaged electrical components.
Understanding Ford Intelligent Oil-Life Monitor (IOLM) System and Lights
Car symbols, or dashboard lights, are a car service reminder. The Ford Intelligent Oil-Life Monitor indicates when and what service your car needs.
How Much Does a Mechanic Make in Rhode Island?
Automotive technician jobs in Rhode Island have an mean mechanic salary of $40k, with some mechanics earning more than $58k.