Q: Parasitic drain 2005 tahoe on ignition a fuse

asked by on

I have parasitic battery drain. It does after 1 day. When I test it its pulling 3.4 amps. Not ma but amps. I have replaced starter and alternator. It has a new battery. I have removed every fuse inside and out to pinpoint it. Its the ignition a 40 amp fuse. Even with every fuse pulled out of car that one still pulls power. I'm at a loss and don't know what runs through this fuse. Please help

My car has 140000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. Great job on the electrical testing thus far! A wiring diagram for the vehicle will work wonders for you if you can obtain one. If you are referring to the ignition switch fuse, then you may be in a position to need to replace the ignition switch itself. When people have issues with the vehicle mysteriously starting on its own, its feedback from the ignition switch that causes it. You may be dealing with a small amount of feedback. The only way to know is to trace the power drain back to its source. From the back of the fuse box, you should be able to trace the wire back to the source with the help of a wiring diagram. For more help with this process, 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. Parasitic drain 2005 tahoe on ignition a fuse

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: Why does my Tahoe start with the fuel pump relay pulled out or left in?

Hi there. Check to see what relay you have pulled. If indeed you removed the fuel pump relay and the engine still starts up, then check the oil pressure switch. An oil pressure switch will kept the engine running as...

Q: Radio stopped working in my car

It is very hard to tell what could have made the radio quit working and then suddenly work again. However, something that would prevent your radio from working would include: damaged wiring or connectors, something came unplugged, blown fuse, faulty...

Q: 2005 Mercedes-Benz Sprinter 2500

The Check Engine light must be reset by a Scan/Clear tool that supports the Sprinter. The computer will not reset it on its own.

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.