Skip the auto shop - Our mechanics make house calls

Q: Rear right brake lights. 2000 GMC C2500

asked by on

I am having some problems with my lights when I apply my brakes on my truck. My rear lights all work, but when I turn on the lights the rear right side light doesn’t work when I apply the brakes. The blinker will flash very fast when I put on the turn signal, too. I also have running lights. Do you have any idea how I can fix the lights so they all work and the blinker is normal? Thank you.

A: Hello there. Brake and turn signal light fa...

Hello there. Brake and turn signal light faults are one of the most common repairs on the 2000 GMC C2500. The brake light bulbs are a dual filament bulb. One side is lit all the time when the vehicle’s headlights are on. The other is the bright side that lights up when the brakes are pressed. From your description, it appears the brake light bulb may have failed and needs to be replaced. For the turn signal blinking quickly, in almost all cases, this is also a sign that the bulb has failed on that side which blinks too fast. Another possible cause would be a wiring fault, turn signal stalk failure, or a flasher fault. To have all of this corrected, a qualified technician from YourMechanic can inspect the lights and make the correct repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: 4WD push button light not working.

Hi there. Check the fuses for the 4WD circuit and see if the fuse is blown. If the fuse is blown replace it and continue diagnosing the circuits to find out why the fuse blown. Remove the switch from the...

Q: Brake lights work when vechile is off. They quit when you start it

There may be a fault in the brake light switch or corrosion crossing a circuit and making the lights work backwards. This switch is usually found on the brake pedal, but a technician with access to a wiring diagram should...

Q: electrical

Hello, thank you for writing in. Although it may seem as if the electrical problems are otherworldly, these issues can be sought out with enough time and concentration. The first thing to do is consider that these components are receiving...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.