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

DIC Buttons

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Old Dec 31, 2021 | 01:59 PM
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Default DIC Buttons

Hi Guys,

I recently bought a 1990 C4 Base model as a project and i've got her running and almost everything working. It seems that none of the buttons do anything on the DIC. The display to the right works as it should. I have seen multiple lights such as "Service Engine Soon", "Coolant Low"...etc.. The speedo and tach work and it displays the mileage but none of the buttons do anything on the DIC. Any pointers would be great. Thanks
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Old Dec 31, 2021 | 02:08 PM
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Originally Posted by steve93207
Hi Guys,

I recently bought a 1990 C4 Base model as a project and i've got her running and almost everything working. It seems that none of the buttons do anything on the DIC. The display to the right works as it should. I have seen multiple lights such as "Service Engine Soon", "Coolant Low"...etc.. The speedo and tach work and it displays the mileage but none of the buttons do anything on the DIC. Any pointers would be great. Thanks
Do you have the FSM (Factory Service Manual) for your '90 Corvette? I couldn't PM you because you're 'new' but I believe you could probably PM or email me using links by clicking on my 'USER ID' to the left. Drop me a PM or email and I'll pass on some info that might be helpful.

KEYON gives you what you believe the correct 'display' in the panel to the right of the DIC buttons? CCM fuse is good? AC fuse is good? Are all fuses present and 'good'?

Last edited by WVZR-1; Dec 31, 2021 at 02:45 PM.
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