C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Silver vs. Black Box?

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Old Mar 18, 2004 | 06:25 PM
  #1  
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Default Silver vs. Black Box?

Sorry this isn't more specific, but the box is on the firewall on Dr. side. I was told it should be silver, coz there were problems with the black one......What is it, and would pep boys carry it?...TIA.....oh sorry, 88 coupe, L-98 engine



[Modified by Metamando, 11:49 PM 3/18/2004]
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Old Mar 19, 2004 | 12:53 PM
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Default Re: Silver vs. Black Box? (Metamando)

More specific would be good but the only "box" that I know started out black and became silver was the ECM...that's your main computer for the engine. Engine Control Module.

If that's what you're talking about, there will be "bunch" of wires...4 bundles running into it.

Your friend is wrong. I believe they changed configuration and color in 93 when they went from OBD1 to OBDII. There is nothing wrong with the black ones anymore than the silver ones...two different computers.
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Old Mar 19, 2004 | 01:01 PM
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Default Re: Silver vs. Black Box? (emoshn)

The "black" box ECM was used from `90-`93.
The "silver" `94-`96 cover served as a heat sink.
OBDII started in `96
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Old Mar 19, 2004 | 01:02 PM
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Default Re: Silver vs. Black Box? (emoshn)

Your friend is wrong. I believe they changed configuration and color in 93 when they went from OBD1 to OBDII. There is nothing wrong with the black ones anymore than the silver ones...two different computers.
The change to the computers happened very late in 93. I have a late 93 (but not late enough for the new computer). The silver ECM's did not have an eprom, to be reprogrammed, they have to be flashed. OBDI was used through 1995.


[Modified by Whitvette, 1:03 PM 3/19/2004]
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Old Mar 19, 2004 | 02:40 PM
  #5  
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Default Re: Silver vs. Black Box? (Whitvette)

If its an 88, the ECM will be in the pass dash, not in the engine bay. A pic would be good at this point. Unless its different in the vert to the coupe :confused:
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Old Mar 19, 2004 | 05:20 PM
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Default Re: Silver vs. Black Box? (britvette)

Sorry guys. My bad.
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Old Mar 19, 2004 | 08:31 PM
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Default Re: Silver vs. Black Box? (britvette)

Thanks for responses, I have a mod day tomorrow with some local guys...I'm sure they can straighten me out. :seeya
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Old Mar 19, 2004 | 11:50 PM
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Default Re: Silver vs. Black Box? (Metamando)

The only thing I can think of in that location that would be different colors would be some relays.
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