Skip the auto shop - Our mechanics make house calls

Q: Turn Signal, cruise, brakes, and emergency flashers not working properly.

asked by on

Hey! So I've been havin some electrical problems with my 2004 GMC yukon. 5.3 w/cruise control. So sometimes, (not every time I start it up) I try to use the left turn signal and the light will come on and not flash. When the turn signal is not on, the brake lights and cruise control do not work. When it is on the brake lights and cruise control work fine. If the turn signal IS on and I use the emergency flashers they won't blink either, they just stay on, until I turn off the turn signal and then it works fine. I've replaced the flasher relay under the dash and it's still doing it. Please help!

My car has 175000 miles.
My car has an automatic transmission.

If you have already replaced the flasher module for the turn signals, your problem may be in the switch assembly whether it is a shorted circuit or the contacts in the switch not making a proper connection and causing problems with other circuits. The problem with the brake lights and cruise control may be the brake light switch on the brake pedal. Consider hiring an experienced technician like one from YourMechanic who can come out and take a closer look at your lighting concerns and offer a more personal diagnosis.

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
  1. Home
  2. Questions
  3. Turn Signal, cruise, brakes, and emergency flashers not working properly.

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: Belt squeaking when I drive. How do I get it to stop?

The problem with most belt dressings is they work by causing a softening of the rubber compound the belt is made of, which although may be convenient to quickly stop a squeaking noise, in the long run is not a...

Q: How do I use the flash-to-pass feature in a 2012 Ford Explorer?

The flash-to-pass feature flashes your high beams headlights briefly. To use this feature, pull the Turn Signal lever towards you slightly, and quickly release. Tip This feature can be used even when the headlights are not on.

Q: After replacements, including starter, flexplate had been installed backwards

Hello. Any major transmission work that is performed by an automotive service facility is almost always under warranty at least for a short period of time. If the repair was done incorrectly, you should just need your receipt from the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...