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Need some electrical help!!

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Old Feb 17, 2007 | 03:33 PM
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Default Need some electrical help!!

When I use the turn signals, either left or right, both turn signal lamps on the dash illuminate. But, on the outside of the car the lights work correctly.

I have two codes: B2578 and B2583. I looked both of these up in the manual and have read all the diagnostic steps and realize the problem could be the hazard switch, turn signal switch or the BCM. I have an extended warranty, so I'll be taking the car in next week to get looked at.

But, now when I attempt to lock the car using the key fob; my horn sounds off like the alarm has been tripped. What is the connection b/w the above system failure and the Horn/alarm system?

Also, can someone confirm whether or not the DIC area is supposed to flash with the Hazards?

Thanks

Last edited by Z06ufgrad2002; Feb 17, 2007 at 04:04 PM.
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Old Feb 17, 2007 | 03:51 PM
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options/unlock lights only/unlock lights and horn, you select that in the options menu
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Old Feb 17, 2007 | 04:02 PM
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Originally Posted by Steve@CTCorvette
options/unlock lights only/unlock lights and horn, you select that in the options menu
I have that set to horn/ lights. But, if everything is closed up the horn should not continue to blow.
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Old Feb 17, 2007 | 04:14 PM
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If I'm reading right, the answer is no. The DIC area does not flash with the signal lights. Just the turn signal indicators and the arrow in the HUD. It sounds like the car thinks you've pushed the panic button on the fob instead of the lock. It may all be related (maybe corroded ground or connector, low battery). The whole thing sounds ground related to me. Post if you find it.
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Old Feb 17, 2007 | 04:33 PM
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Originally Posted by 65GGvert
If I'm reading right, the answer is no. The DIC area does not flash with the signal lights. Just the turn signal indicators and the arrow in the HUD. It sounds like the car thinks you've pushed the panic button on the fob instead of the lock. It may all be related (maybe corroded ground or connector, low battery). The whole thing sounds ground related to me. Post if you find it.
I've been through all the chassis grounds and one interior ground on the drivers side last week. All were in excellent condition, absolutely no corrosion. I disassemled all and lubricated them with dielectric grease and reinstalled. I did that last week when I started having the "intermittant turn signal" issue. Which after reading some more today is most often related to a failing Hazard switch. So my initial thoughts now are that this whole thing is somehow related to a faulty hazard switch.
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Old Feb 18, 2007 | 01:39 PM
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More new findings today. Went to take the car out today and there was definate relay switching constantly from the passenger foot well. Turned out to be the DRL relay. I pulled it and the noise went away. Pushed on the brake pedal and again a relay started switching madly. Pulled the other DRL relay and no more switching.

Now my hazard switch works correclty and my DIC no longer flashes with the hazard switch. And my blinkers work but, they flash at a fast rate and only the correct green arrow flashes in the dash instead of both.

Does this shed any light on what the problem may be?
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Old Feb 18, 2007 | 02:04 PM
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ok, so you just walked up to the car and heard the relay switching? or did you use the FOB first. What are the relay numbers that you pulled? 38 and 40? The turn signals stopped working last week? How? Steady on? No flash at all? Both sides or just one?
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Old Feb 18, 2007 | 04:49 PM
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ok, so you just walked up to the car and heard the relay switching? or did you use the FOB first.
I started the car and while I was waiting for it to warm up I noticed the relay switching

What are the relay numbers that you pulled? 38 and 40?
Yup those are the ones I pulled.

The turn signals stopped working last week? How? Steady on? No flash at all? Both sides or just one?
Both would work sometimes and other times just didn't work at all.
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Old Feb 19, 2007 | 07:29 PM
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Turns out the problem was a bad relay on my Left HID headlight.

It's hard to believe that relay caused all these problems.
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Old Feb 20, 2007 | 11:24 PM
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Good job. Glad you got it figured out.
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Old Feb 21, 2007 | 03:11 PM
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Originally Posted by lucky131969
Good job. Glad you got it figured out.
I may have posted too early.

The problem came back in less than 36 hours. It's back at the shop now for further diagnosis.

I'll post back when I know more.
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