Where is the computer on a 1990
Thread Starter
Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Where is the computer on a 1990
Where is the computer on a 1990 model? Took half of my dash apart today and think I found it, in the middle behind where the radio and climate controls are. Just wanted to verify.
Thread Starter
Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Originally Posted by pipe
I thought he might have found the DERM unit for the airbag system. It's right behind the stereo and air controls.
I thought that was the computer under the hood but when I took my dash apart yesterday I found something the is about 6 X 10 X 2 inches right behind the radio and climate controls and it is silver/aluminum color. I'll get a pic of it if I think about it. It looks alot like the computer did in a '86 model I had, that what confused me.
Can someone explain what the DERM unit is/does. I Haven't found a helms manual for sale cheap yet.
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Burning Brakes
Joined: Aug 2004
Posts: 782
Likes: 3
From: Ft. Wayne In.
Man what a clustersmuck! That is the ccm, I hope you needed to do more to your dash than just get to the ccm. When I took mine out I went through the trans. tunnel on the drivers side. It was'nt easy, had to take both seats half the consel and the dash cluster out and drop the steerin wheel down but it sure looks a lot easier than putting your mess back together. Anyway look at your post for where is the mileage stored? for answer to do you need to keep the old ccm. Good luck if I can help let me know.
Thread Starter
Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Originally Posted by 902066
Man what a clustersmuck! That is the ccm, I hope you needed to do more to your dash than just get to the ccm.
Thanks for the info.
Drifting
Joined: Jan 2003
Posts: 1,894
Likes: 3
From: Reading PA.
The DERM unit is the control box for the Air Bag System. It also is located behind the Stereo Sys. it has a bright yellow covering over the wires that lead into it coming from the left and right frame sensor. It is about 5in by 4in. big. The frame sensors are located on the left and right side very close to the firewall. The wires come through the firewall in the footwell area behind the carpet. And from there they are covered in the bright yellow covering leading to the DERM. Only the1990 vette's have the INFL REST/ SEAT BELT LIGHT problem.
