Parasitic Draw.

[Nick91l]

2000 Tahoe. 4x4. 5.3

This is kinda a side thread that is involved with one of my other posts.

I have some concerning issues with a Tahoe I just bought.
One of them being a battery draw.
When I got home from work this morning, I grabbed my meter to see just how bad it is.
I placed my meter on the negative side of the battery circuit. I have a 1.3A draw.
I needed to get stuff done inside but I pulled a few of the culprits from under the hood. The main fuse that made the most of a difference was the radio fuse. Dropping down to 480Ma. Or about .5 of a amp. Now, with my experience, you usually want a max of 50Ma? Does the amount of 500 seem a lot for a radio? Even if the radio was a issue clearly there’s another?

Just looking to find out what the usual amp draw is on a good Tahoe, so I have a direction to go in. Thanks!


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[alaska_guy]

Not sure if you got an answer on another thread. .5 amp is perfectly normal, especially on new vehicles.

 

[OR VietVet]

What happens when you plug the radio back in and disconnect the alternator? Also, if the radio is still unplugged. The radio needs current for memory and clock and such.

 

[Nick91l]

Not too much of a update,
I didn’t try doing the test with the alt. Detached. But I did take it through the car wash and got a blinking CEL. This is the info it gave me..

 

[Nick91l]

Not too much of a update,
I didn’t try doing the test with the alt. Detached. But I did take it through the car wash and got a blinking CEL. This is the info it gave me..

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