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: Foot pedal vibration at certain RPM's?

The vibration still sounds like it could be coming from a worn engine or transmission mount. You may be able to do a simple check by engaging the parking brake and putting the vehicle in drive and blipping the throttle...

Q: Clc 180 not charging replaced battery and alernator

Thank you for contacting us today in regards to your 2008 Mercedes-Benz not holding a charge. When the alternator and battery have both been replaced at the same time, a common culprit is either an issue with the battery cables...

Q: Q: Transmission problem?

Hello, It sounds like you may have a transmission synchro wearing out. As you may know, when a clutch drags, it is not letting go of the disk fully which overloads the synchros and burns up the friction surfaces quickly....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...