C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

My DIC is dead!!

Thread Tools
 
Search this Thread
 
Old Apr 25, 2009 | 07:38 PM
  #1  
427435's Avatar
427435
Thread Starter
Drifting
10 Year Member
 
Joined: Nov 2001
Posts: 1,658
Likes: 25
From: Rochester Minnesota
Default My DIC is dead!!

So are the buttons-----no lights and no beeps. It happened as I was driving today on Highway 52 at 72 mph on cruise. The headlights, wipers, HUD, HVAC, radio, etc. all work. I've checked fuses 19 and 25. They're good and there's power (12.3 volts with the engine off) to both sides (ignition switch on when checking 19).

Is there anything else I should check before I start figuring out how to get the IPC out??

Anyone else have their DIC go bad? What fixed it?

Thanks for your help.

Edit: I did some more checking and I do get beeps from the reset, options, and E/M buttons-----not from fuel or gauges.

Last edited by 427435; Apr 26, 2009 at 12:14 AM.
Reply
Old Apr 25, 2009 | 11:01 PM
  #2  
Mike99FRC's Avatar
Mike99FRC
Racer
15 Year Member
 
Joined: Sep 2005
Posts: 391
Likes: 0
From: Palm Coast FL
Default

I had almost the same question and did'nt get many responses. The one that I got was saying that the cluster is bad. I'm not sure if that's the case for you though.
Reply
Old Apr 26, 2009 | 12:12 AM
  #3  
427435's Avatar
427435
Thread Starter
Drifting
10 Year Member
 
Joined: Nov 2001
Posts: 1,658
Likes: 25
From: Rochester Minnesota
Default

Mike, what did you do to fix it? How spendy?
Reply
Old Apr 26, 2009 | 01:32 AM
  #4  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

12.3 volts isn't enough juice. Needs to be a solid 12.5 or above for the car to really run. Sort of sounds like the DIC main connector on the rear of it has come lose. You checked the two fuses, what about all the others? My next thought is the ignition switch itself as there has been a lot of failures of them lately.
Reply
Old Apr 26, 2009 | 05:45 AM
  #5  
ecoman's Avatar
ecoman
Burning Brakes
 
Joined: Nov 2007
Posts: 1,121
Likes: 0
From: naugatuck ct
Default

Try Viagra
Sorry could not help it,good luck finding the problem
Reply
Old Apr 26, 2009 | 06:05 AM
  #6  
9secondflat's Avatar
9secondflat
Melting Slicks
10 Year Member
 
Joined: Dec 2005
Posts: 2,291
Likes: 0
From: sterling ct
Default

generally it is caused by the consumption of excessive amounts of alcohol...hence whiskeydic
Reply
Old Apr 26, 2009 | 09:39 AM
  #7  
wildbadbill's Avatar
wildbadbill
Pro
 
Joined: May 2008
Posts: 596
Likes: 2
From: Houston Texas
Default

I think 12.3 V while NOT RUNNING is good...
Looks like you have to pull the DIC and check the connections.Is youe HUD dead as well?
Pulling the DIC is about 30-45 min job not bad-somebody can provide the link here...
Reply
Old Apr 26, 2009 | 11:54 AM
  #8  
427435's Avatar
427435
Thread Starter
Drifting
10 Year Member
 
Joined: Nov 2001
Posts: 1,658
Likes: 25
From: Rochester Minnesota
Default

Thanks for the replies.

The HUD is working and it is the original battery. The 12.3 volts is with the engine off and it cranks and starts well----even after sitting for a month, so I doubt it's the battery. I have 14.4 volts with the engine on plus the DIC quit while I was driving-----so it shouldn't be a voltage issue.

I've got the service manuals, but it looks like more than an hour's job to get the IPC out-----maybe I just have to get at it. There are lots of panels to pull to get at the IPC and DIC.

If the connections are OK, where can a person get a new IPC or get the current one repaired without going to a dealer?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Apr 26, 2009 | 02:01 PM
  #9  
fnsblum's Avatar
fnsblum
Pro
 
Joined: Oct 2007
Posts: 679
Likes: 4
From: TremontonUT UT
Default

12.3 is right on the money after you shut down and all the auto stuff cycles. A brand new fully charged battery on the bench will read 12.5 VDC. Later! Frank
Reply
Old Apr 26, 2009 | 03:06 PM
  #10  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

I've got an extra IPC for a '99 that I only bought for the background illumination if I ever needed it. I gave away the car to my son and yes, it has the HUD connector. To get it out, you'll need to remove the center console, the knee bolster and a few extra screws but the important part will be removing the two nuts holding the steering wheel column up, which will allow it to lower down about an inch, which is just enough clearance to get the IPC out. Takes about 15 minutes to get it out. The IPC was bought off the auction site used and I never installed it. There are chips on it that you can swap with yours to insure the mileage stays the same. I do not know what year you have this instant so if you need this one, make sure you find out if its compatible first.
Reply
Old Apr 26, 2009 | 08:45 PM
  #11  
427435's Avatar
427435
Thread Starter
Drifting
10 Year Member
 
Joined: Nov 2001
Posts: 1,658
Likes: 25
From: Rochester Minnesota
Default

Originally Posted by dgrant3830
I've got an extra IPC for a '99 that I only bought for the background illumination if I ever needed it. I gave away the car to my son and yes, it has the HUD connector. To get it out, you'll need to remove the center console, the knee bolster and a few extra screws but the important part will be removing the two nuts holding the steering wheel column up, which will allow it to lower down about an inch, which is just enough clearance to get the IPC out. Takes about 15 minutes to get it out. The IPC was bought off the auction site used and I never installed it. There are chips on it that you can swap with yours to insure the mileage stays the same. I do not know what year you have this instant so if you need this one, make sure you find out if its compatible first.
Mine is an 03----I wonder if they would be the same? I may PM you after I check for loose connections------which won't be for a few days. The lawn needs fertilizing and some other things need doing.
Reply
Old Apr 27, 2009 | 01:11 AM
  #12  
Mike99FRC's Avatar
Mike99FRC
Racer
15 Year Member
 
Joined: Sep 2005
Posts: 391
Likes: 0
From: Palm Coast FL
Default

Originally Posted by dgrant3830
I've got an extra IPC for a '99 that I only bought for the background illumination if I ever needed it. I gave away the car to my son and yes, it has the HUD connector. To get it out, you'll need to remove the center console, the knee bolster and a few extra screws but the important part will be removing the two nuts holding the steering wheel column up, which will allow it to lower down about an inch, which is just enough clearance to get the IPC out. Takes about 15 minutes to get it out. The IPC was bought off the auction site used and I never installed it. There are chips on it that you can swap with yours to insure the mileage stays the same. I do not know what year you have this instant so if you need this one, make sure you find out if its compatible first.
My car is a 99. My DIC does'nt work at all either. Do those IPC's work for all years or is it just year specific?
Reply
Old Apr 27, 2009 | 09:21 AM
  #13  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

I truly don't know but check through Gene Culley's part listings by year for the IPC and see if they are different. We know the 97's and 98's are different as they didn't have a HUD therefore no hud connector on the IPC. Keep in mind, I've never installed this one in my car so I can only assume that it works. As I said, I only bought it for the background illumination should my original ever fail because you can't buy those lamps for the HV power supply, seperately.

Last edited by dgrant3830; Apr 27, 2009 at 09:24 AM.
Reply
Old Apr 27, 2009 | 08:52 PM
  #14  
Mike99FRC's Avatar
Mike99FRC
Racer
15 Year Member
 
Joined: Sep 2005
Posts: 391
Likes: 0
From: Palm Coast FL
Default

Originally Posted by dgrant3830
I truly don't know but check through Gene Culley's part listings by year for the IPC and see if they are different. We know the 97's and 98's are different as they didn't have a HUD therefore no hud connector on the IPC. Keep in mind, I've never installed this one in my car so I can only assume that it works. As I said, I only bought it for the background illumination should my original ever fail because you can't buy those lamps for the HV power supply, seperately.
Ok, i'll check out the parts listings. Is the IPC that sliver box on the back of the cluster?
Reply
Old Apr 27, 2009 | 10:31 PM
  #15  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

No, the IPC is the whole thing.. the cluster itself as far as I know. The box on the back is the high voltage power supply.
Reply
Old Apr 27, 2009 | 10:38 PM
  #16  
SteveDoten's Avatar
SteveDoten
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2003
Posts: 6,276
Likes: 226
From: Farmington CT
Cruise-In VII Veteran
Default

WTF, IPC???

Instrument panel cluster

1. bad IPC or loose connector
2. Fix ig switch as per Bill Curlee how to(my vote)
3. let us know if 1. or 2., thanks
Reply
Old Apr 27, 2009 | 11:58 PM
  #17  
427435's Avatar
427435
Thread Starter
Drifting
10 Year Member
 
Joined: Nov 2001
Posts: 1,658
Likes: 25
From: Rochester Minnesota
Default

Originally Posted by Steve Doten
WTF, IPC???

Instrument panel cluster

1. bad IPC or loose connector
2. Fix ig switch as per Bill Curlee how to(my vote)
3. let us know if 1. or 2., thanks

I've got power to everything else when the ignition switch is "on" including the main instruments. Does the DIC get power from a different contact in the switch than all the other electrical items?
Reply

Get notified of new replies

To My DIC is dead!!

Old Apr 28, 2009 | 10:45 PM
  #18  
Mike99FRC's Avatar
Mike99FRC
Racer
15 Year Member
 
Joined: Sep 2005
Posts: 391
Likes: 0
From: Palm Coast FL
Default

Originally Posted by 427435
I've got power to everything else when the ignition switch is "on" including the main instruments. Does the DIC get power from a different contact in the switch than all the other electrical items?
That's the exact same thing I'm looking for too. I'm having the same problem.
Reply
Old Sep 10, 2009 | 01:18 PM
  #19  
BlueCorvetteGirl's Avatar
BlueCorvetteGirl
Racer
 
Joined: Sep 2007
Posts: 406
Likes: 0
From: Walnut Creek California
Default

Did anyone ever find a solution to this....I have the SAME thing going on with mine, the buttons work, the HUD works...its just not putting a read out on the display....I've yet to pull it out, but wondering if its a simple part replacement or if it will require re-soldering or loose connection etc...
Reply
Old Sep 10, 2009 | 11:49 PM
  #20  
Mike99FRC's Avatar
Mike99FRC
Racer
15 Year Member
 
Joined: Sep 2005
Posts: 391
Likes: 0
From: Palm Coast FL
Default

Originally Posted by BlueCorvetteGirl
Did anyone ever find a solution to this....I have the SAME thing going on with mine, the buttons work, the HUD works...its just not putting a read out on the display....I've yet to pull it out, but wondering if its a simple part replacement or if it will require re-soldering or loose connection etc...
Well my issue is resolved. Turns out the main board in my IPC was bad. I bought a used IPC and had my mileage set to the old one. Now it's fine. I'm not sure in your case though. It could be a loose connection inside. Maybe someone with more knowledge can help u out futher. Good luck.
Reply



All times are GMT -4. The time now is 03:55 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE