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2000 Chevy Lumina Electrical Issues

2000 CHEVROLET TRUCK
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MCLAPPER
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I'm having some electrical trouble.....they are really more of an annoyance than trouble, but I really prefer my vehicles to operate properly.

I have an aftermarket keyless entry installed by factory/service center when new. It used to work just fine, now it will only work with the parking brake set. The daytime running lamps have also quit working....most of the time. They will work if the parking brake is set, and will continue to work for less than a minute after starting the car and disengaging the parking brake. The automatic headlights come on after the DRL click off automatically. My door locks also seem to have a mind of their own. They will cycle when the brake is applied for the first few minutes of driving, then it will be intermittent after that.

The interior lights will also come on randomly, and would only go off if emergency brake was applied, or lightly applied(not even to first click). this has gone away, but still aggravating.

I also have a couple radio buttons that are no longer lit.

I have no idea where to begin....please help.

thanks
Jan 8, 2007 at 4:01 AM
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SERVICE WRITER
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My experience with radio lights is that the radio itself is the problem. The other problems would be separate I would expect. I had a cycling door lock problem a little bit ago, if I find anything, I'' update you.
Jan 8, 2007 at 9:23 PM
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SERVICE WRITER
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The door cycling problem was a gm and had found the wiring harness under the battery corroded. Different body style however.
Jan 10, 2007 at 3:51 AM
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MCLAPPER
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Thanks for the info......

I think i have a much more pressing issue, though. Actually two issues

#1) My low coolant light came on recently, and I thought nothing of it added the appropriate type and went on.....During a recent oil change (tonight) I noticed coolant has been leaking from somewhere and it has tracked over the oil pan and transmission pan. It seems to only happen while driving as there is no noticeable 'spot' under the car. Are there any common causes for this on these cars???

#2)I have noticed a dull humm coming from the driver's front side at speed over 65. I'm looking for a bit of info so I can prepare myself for what I'm getting into for repairs.

thanks
Jan 16, 2007 at 10:41 AM
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SERVICE WRITER
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The second problem sounds like a wheel bearing or choppy tire. Does the noise change if you vear to the left or right?

What size engine?

Go to your accumulator for your A/C, There is a engine wiring harness that may be chafing and wearing through causing you electrical nightmares
Jan 16, 2007 at 11:01 AM
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Suggested Repair

Inspect the engine wiring harness near the A/C accumulator for chafing that could explain the parking-brake-related electrical faults. Treat the unlit radio buttons as a radio fault. For the hum above 65 mph, check the driver-front wheel bearing and tire condition, noting whether the noise changes when steering left or right. The coolant leak was not diagnosed.

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Conversation Summary

The owner of a 2000 Chevy Lumina reported keyless entry, daytime running lamps, door locks, and interior lights behaving oddly and often only working with the parking brake applied, plus unlit radio buttons. Later they added a coolant leak that appears only while driving and a dull hum from the driver front above 65 mph. The expert said the radio lights point to the radio itself, suggested a wheel bearing or uneven tire for the hum, and advised checking the engine wiring harness at the A/C accumulator for chafing. A similar door-lock issue on a different GM vehicle involved corrosion under the battery, but that was not confirmed here.

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