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Help with DIC codes....

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Old Aug 30, 2007 | 09:22 PM
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Corvette Tom 00's Avatar
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Default Help with DIC codes....

Hello,

Should I be concerned with these codes from my DIC?

B2578 H
B2583 H
B2584 H

U1016 H
U1064 H
U1096 H

Thanks for your help.

C T 00
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Old Aug 30, 2007 | 09:34 PM
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The "U" codes are never a concern unless they are "current".
And they do tend to happen a lot.

At least 2 of the "B" codes have to do with shorts in the front
turn signals. Have you been having problems with your blinkers,
including either really slow or really fast blinking?
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Old Aug 31, 2007 | 06:47 AM
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Corvette Tom 00's Avatar
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Originally Posted by SilvaDragon
The "U" codes are never a concern unless they are "current".
And they do tend to happen a lot.

At least 2 of the "B" codes have to do with shorts in the front
turn signals. Have you been having problems with your blinkers,
including either really slow or really fast blinking?
Hello Silva,

No I have not been having any problems with my turn signals. Should I just keep an eye on it and see if it acts up?

Thanks for your help

C T 00
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Old Aug 31, 2007 | 09:34 AM
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From: Lynnfield MA
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Hey Tom,

Yeah, I'd say no action right now, just keep an eye on it.
If you blow a fuse related to the blinkers, or they start
acting strange, don't ignore it, as the computer has
warned you that something was afoot.

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Old Aug 31, 2007 | 10:02 AM
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Bill Curlee
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The PCM and BCM monitor grounds and (low reference signals) If there not correct, it will set a DTC. Your front lighting circuits are grounded through two SPLICE PACKS (SP) and two chassis grounds (G-101 & g-102. The ground paths OR the 12 VDC supply contacts (inside the bulb sockets) could be corroded just enough that the BCM is having issues BUT the bulb still works! If it were me, I would clean all the front lighting grounds and SP's

The U series codes do offer some insight into unsatisfactory module operation. U series codes can indicate that the 12 VDC voltage to that module/s is going LOW. If it drops lower than the low voltage cut off level, the module will shut down for the period of time the voltage is LOW and set a DTC. When the voltage returns to ABOVE the low voltage cut out point, the DTC turns to a history code.

This phenomena usually occurs during cold cranking and when the battery is slightly discharged. If the battery is WEAK,,it will easily drop low during cold cranking. Battery voltage is inversely proportional to battery current. During cranking the starter draws 200-300 or more amps. the large current draw causes the volts to drop LOW. Some times too low if the battery is low, weak or bad!

Put a volt meter on the battery terminals and observe the battery voltage during COLD CRANKING. See how low it really drops to. Please let me know how you make out.

Bill Curlee
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Old Aug 31, 2007 | 11:11 AM
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Hello,

Thank you for your input. I do know that the original owner had a problem with battery leaking. He replaced the battery with a new one.
Could that problem have kicked out the codes i now have?

Thanks
C T 00
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