Need some electrical help!!

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Feb 17, 2007 | 03:33 PM

Z06ufgrad2002

Thread Starter

Safety Car

Joined: Nov 2002

Posts: 4,394

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From: Melbourne FL

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.

Feb 17, 2007 | 03:51 PM

SteveDoten

Le Mans Master

Joined: Sep 2003

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From: Farmington CT

Cruise-In VII Veteran

options/unlock lights only/unlock lights and horn, you select that in the options menu

Feb 17, 2007 | 04:02 PM

Z06ufgrad2002

Thread Starter

Safety Car

Joined: Nov 2002

Posts: 4,394

Likes: 6

From: Melbourne FL

Quote:

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.

Feb 17, 2007 | 04:14 PM

65GGvert

Team Owner

Joined: Jul 2006

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From: Kannapolis NC

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.

Feb 17, 2007 | 04:33 PM

Z06ufgrad2002

Thread Starter

Safety Car

Joined: Nov 2002

Posts: 4,394

Likes: 6

From: Melbourne FL

Quote:

Originally Posted by 65GGvert

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.

Feb 18, 2007 | 01:39 PM

Z06ufgrad2002

Thread Starter

Safety Car

Joined: Nov 2002

Posts: 4,394

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From: Melbourne FL

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?

Feb 18, 2007 | 02:04 PM

lucky131969

Tech Contributor

Joined: Jan 2007

Posts: 19,246

Likes: 1,092

From: Dyer, IN

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?

Feb 18, 2007 | 04:49 PM

Z06ufgrad2002

Thread Starter

Safety Car

Joined: Nov 2002

Posts: 4,394

Likes: 6

From: Melbourne FL

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.