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Parasitic draw from Radio - 2004 Tahoe

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Old April 9th, 2020, 12:35 PM
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Default Parasitic draw from Radio - 2004 Tahoe

I just got a brand new battery and it went dead within a week. Tested for a parasitic draw and found about 3.5 amps being drawn from the radio circuit. I unhooked the radio at the dash and this took it down to about 1.5 amps. Pulling the radio fuse brought it down to .5 amps. Any ideas on what could be causing the radio to draw all these amps, and what else on the circuit I should be looking for to find the remaining 1 amp draw?
Old April 9th, 2020, 2:33 PM
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Originally Posted by doctor_shorty
I just got a brand new battery and it went dead within a week. Tested for a parasitic draw and found about 3.5 amps being drawn from the radio circuit. I unhooked the radio at the dash and this took it down to about 1.5 amps. Pulling the radio fuse brought it down to .5 amps. Any ideas on what could be causing the radio to draw all these amps, and what else on the circuit I should be looking for to find the remaining 1 amp draw?
You need a schematic that will show what all is on that circuit.
Old April 9th, 2020, 3:07 PM
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you'll need to get a diagram to see what's on the radio fuse, but I would guess anything audio related:

clocks
amplifiers (for Bose system)
rear seat control panel

could also be a short in the wiring.
Old April 10th, 2020, 6:54 AM
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Is it the factory radio or aftermarket? Some aftermarket radios will draw power after the ignition is turned off. You ignition switch could be the source as well.
Old April 10th, 2020, 10:38 AM
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CD stuck in it ?
Old April 25th, 2020, 9:20 AM
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Default Ever solve it?

I’ve been having similar issues, doc.

-stereo runs constantly
​​​​​​- dvd player
- power back door intermittently works
​​​​​​- power seat intermittently works
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