Q: 1999 chevy K150 suburban electrical problems

asked by on

My 1999 chevy k1500 suburban is acting up. Locks seem like they dont have enough power to lock or unlock. I hear the clicking under the dash from what I assume is the relay. The 2 12v power outlets are also acting weird. They have power but the power seems to be "pulsating". I put a usb charger in it, without anything charging, and the green power light on it goes bright/dim quickly and makes what I can describe as an electrical sound. The 4x4 button too. Only lights up half way, half the time. Always let's me switch wheel, just doesn't light up all the way. Same with ac/heat controls. The left side of the cluster is really dim, and matches the rear controls on the head liner in the front. What can I do to determine the problem?

My car has 181000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. There are several components that will attribute to electrical issues like this. Generally speaking, when you have issues with several electrical systems at once, and not just one or the other, the charging system is to blame because it effects all systems. With that being said, start by testing the battery and the alternator. Both can be tested in car with a voltmeter, or at your local parts store if removed from the vehicle. You may also want to check into the battery cables, alternator connections, and wires feeding the fuse box. Make sure they are all clean, dry, and tight. For more help with diagnostics and repairs, contact our service department to schedule an appointment.

Was this answer helpful?
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. 1999 chevy K150 suburban electrical problems

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: Q: Ignition fuse keeps blowing

The ignition circuit fuse blowing and the problem with the blower motor are almost undoubtedly not related. In particular, if the blower motor works, on any speed, while at the same time the ignition circuit fuse is blown or otherwise...

Q: Car starts on its own. Just changed the starter, the solenoid is okay, and I checked the wiring.

Hello. Either the two big terminals are touching each other on the starter solenoid or the starter solenoid is shorted internally. You should check to make sure the two large terminals are not touching. If you would like to have...

Q: Car needs new battery or alternator.

A technician, such as one from YourMechanic can come out a test the battery and determine if the alternator is running correctly. They can perform a load test on the battery and test all your fuses and pull codes on...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...