Q: Courtesy light fuse drains battery 2000 Chevrolet Silverado
Tracked my parasitic battery drain using multimeter to the courtesy light fuse under the hood. Verified results by unplugging fuse and battery does not drain down overnight. With fuse replaced battery does drain down overnight. Would like to address problem, need advice and instructions.
My car has 305000 miles.
My car has an automatic transmission.
Recommended Services
| Electric Problems Inspection | $94.99 - $114.99 | Get a Quote |
Hi there - great diagnostic work! At this point, having identified which circuit is causing the drain, you will need a wiring diagram that identifies what other devices are on this circuit (clock, underhood light maybe?), and could be drawing current. For assistance, I recommend a wiring inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.
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
What others are asking
What does it take to trigger the Anti-Theft system?
Your car’s Anti-Theft system provides important protection from would-be thieves. Once the system is armed, it could be triggered by several different actions. Here’s what you need to know to both ensure that your system is working properly and preventing...
Ground wire off oil pressure sensor melts
The wire to the oil pressure sensor is only a ground connection from the oil pressure sensor to the instrument cluster. If you are seeing this wire smoke like it is getting melted, then you have either a short to...
Ticking sound while accelerating and when the car is in gear
There is technical bulletins for your vehicle using aftermarket (https://www.yourmechanic.com/article/all-about-aftermarket-parts) oil filters. These oil filters (https://www.yourmechanic.com/article/how-do-oil-filters-work) may look like they fit your car model, but do not allow the proper oil flow to the motor and can cause noises and...
Car will not start. Will only move to ACC mode
This relates to a faulty mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement). This is a unit that monitors air intake into your engine as it is mixed with fuel prior to being injected into the motor. When this is not working properly,...
Hi Ben I noticed That when i took the inertia switch out my truck I heard something one is rattling is that normal
The inertia switch has a metal ball inside the switch that will make contact between the two terminals of the switch when working properly. The inertia switch is designed to move the ball away from the contacts in a roll...
Overheating
This can be caused by a number of things such as low coolant levels, a faulty thermostat (https://www.yourmechanic.com/services/thermostat-replacement), a clogged radiator (https://www.yourmechanic.com/services/radiator-replacement) or a failing coolant fan switch. As you may know the coolant fan switch (https://www.yourmechanic.com/services/cooling-fan-relay-replacement) helps to maintain...
Knocking, sputtering, and jerking, feels like its losing power.
Hi there. Typically these symptoms are not associated with the same exact mechanical fault. Like you said, engine knocking is sometimes caused by lifters or engine misfiring, but the engine jerking and inconsistent acceleration could be something completely different. It's...
Battery good, alternator good, brand new alternator cable, still not charging.
Hi There, The first diagnosis of the bad voltage regulator is likely the cause of your charging system not properly charging the battery. When the voltage regulator is not working properly, this may result in the alternator allowing too much...
My transmission makes a funny noise when I accelerate
If you believe your transmission is making abnormal noises, I would recommend having it inspected by a qualified professional as soon as possible. This will avoid any potential damages that could be caused by whatever is making the sound.
Related articles
The Best Used Cars to Buy for Senior Citizens
Everyone Everyone needs a way to get around. You need to get groceries, get to doctors’ appointments, visit with family and more. However, senior citizens have very different needs when it comes to buying a used car than other demographics....
Symptoms of a Bad or Failing Battery Cable
If you experience problems starting and powering the car or find corrosion on the battery terminals, you may need to replace a battery cable.
Understanding Chevrolet Oil-Life Monitor (OLM) System and Lights
Car symbols, or dashboard lights, are a car service reminder. The Chevrolet Oil Light Monitor system indicates when and what service your car needs.
Browse other content
Estimates
Services