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wang3922

Battery Drain - illumination ghost in instrument panel

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I have a 2003 Chevy Silverado LS 1500 5.3L Gas Extended Cab Longbed and am having a weird battery drain issue. After sitting for about a week in 65 degree temps (or two to three days in freezing temps) my battery will be completely dead - like I can't even operate the door locks it's so dead. I started having the issue about 1.5 years ago and replaced the battery, but that didn't fix the issue...

 

A few months ago I went out and peered into the drivers side window to find that the readout on my instrument panel (where the odometer reading, hourometer and tripometer is displayed) was completely illuminated (see picture below). This was after it had been sitting for at least a full day. As soon as I unlocked and opened the door, it went out. I have seen this many times now. I've had the truck for almost 5 years now and the only thing I have done to it is the installation of a radio about 4 years ago. It all seems to function great, minus the battery drain. Ideas? I have the Ghost Busters on speed dial if needed.

 

UPDATE: I just did a parasitic battery drain test and found that it was pulling 0.25 A when sitting and would occasionally jump up to and sit around 0.6 A. I pulled the IPC/DIC fuse and it drops to 0.004 A. So, I'm getting warmer... I also pulled my aftermarket radio out and found an Access GMOS-01 harness. Could this crappy harness be causing the problem? Is there a way to test it?

 

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Edited by wang3922

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Try unhooking the aftermarket harness from the factory harness and see what the drain is, perhaps something in the aftermarket harness or radio is bleeding voltage into someplace it shouldn't.

 

Always been your truck? If not, look for any thing that probably shouldn't be there, under dash electronics wise.

 

A wiring diagram can be your friend here, if nothing else as a way to explain everything attached to the fuse(s) you pull to stop the drain.

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O3-04 had this problem, the delay shut off timer stays on. PM me and I'll show you it could be.

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Check the door latch too! There is a sensor in there that kills the power when you turn the truck off. Does your radio ever stay on when you open the drivers door? Mine did the same thing. Cleaning it all up seemed to help!

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Instrument cluster doesn't have RAP supply like the radio. The cluster should shut ''OFF'' 25 seconds after pulling the key. Some 03-04 stay on but it's repairable. I get at least 2-3 a month with this problem. Like this one...this is an 03

 

2017-03-15%2018.10.44_zpsrmkbjn2j.jpg

Edited by Coby7
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I have this same issue, did you find a fix?

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Check my post on Tuesday.

 

 

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Did one last week for a forum member from St-John and just did an other one of these. This time out of an 04.

 

Copper migration on the backplane again. This one would half shut down, it would go from drawing 42ma to 21ma after 25 seconds but would not completely shut down.

 

So in the process of rebuilding, I make it a point of cleaning any copper migration that I can see.  Copper migration is often the reason why the High beam indicator stays on a dim lit. Then I cover it up with Kutex just because it's practical, comes with a small brush, does the job and not cumbersome on my bench.

 

TAOhuaO.jpg

i3fMtRZ.jpg

 

Did this one in blue as per customer request with all new motors.

 

blfWbz7.jpg

gGNZB7U.jpg

UGDYitW.jpg

 

Took me all of 45 minutes.

 

 

Edited by Coby7

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On 1/11/2019 at 6:36 PM, Coby7 said:

Did one last week for a forum member from St-John and just did an other one of these. This time out of an 04.

 

Copper migration on the backplane again. This one would half shut down, it would go from drawing 42ma to 21ma after 25 seconds but would not completely shut down.

 

So in the process of rebuilding, I make it a point of cleaning any copper migration that I can see.  Copper migration is often the reason why the High beam indicator stays on a dim lit. Then I cover it up with Kutex just because it's practical, comes with a small brush, does the job and not cumbersome on my bench.

 

TAOhuaO.jpg

i3fMtRZ.jpg

 

Did this one in blue as per customer request with all new motors.

 

blfWbz7.jpg

gGNZB7U.jpg

UGDYitW.jpg

 

Took me all of 45 minutes.

 

 

Do you use native 12V LEds? Otherwise, you must hide your resistors well! Great job!

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Hi Coby,,

Thank You for the photos. Curious. What do you use to do the copper migration cleanup with? I am having the exact scenraio you describe,,on an '03 Suburban... I can see with a magifing glass some somewhat white coloring aound some traces exactly were you have the red outline.

Thank You

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