How do you switch out the main board on a gadge cluster
06-05-2009, 12:13 AM
#21
Racer
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I bought a Z06 instrument cluster and HUD projector for a forum member, and installed it in my '99 FRC. When I had the two instrument clusters side by side on my work bench, I disassembled them both and swapped the odometers so that the Z06 cluster would show the correct mileage for my '99. The 8,900 mile Z06 odometer just didn't feel right in my 171,000 mile car 
It isn't too hard a process, and does not require any soldering or wire cutting. I pretty much just figured it out as I was going. I didn't take any pictures at the time, but since I still have the '99 cluster (with the Z06 odometer installed), I might be talked into disassembling it again for some pictures...
It isn't too hard a process, and does not require any soldering or wire cutting. I pretty much just figured it out as I was going. I didn't take any pictures at the time, but since I still have the '99 cluster (with the Z06 odometer installed), I might be talked into disassembling it again for some pictures...
06-05-2009, 12:29 AM
#22
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CI 6,7,8,9,11 Vet
St. Jude Donor '08
Unless you get a spare IPC module,,NO LUCK.
06-05-2009, 12:41 PM
#23
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St. Jude Donor '15
I'll see what I can find though
06-05-2009, 12:42 PM
#24
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St. Jude Donor '15
You'd be best off getting a used cluster that works and having it reprogrammed with the appropriate mileage in my opinion. That will ensure the problem is replaced.
06-05-2009, 08:35 PM
#25
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how much would a dealership charge for something like this? just curious seeing they can
1) cut the dash and line it up
2) order any odd screws you need
3) set the correct mileage from your car to the new cluster
any ideas would be great
HAPPY FRIDAY!
1) cut the dash and line it up
2) order any odd screws you need
3) set the correct mileage from your car to the new cluster
any ideas would be great
HAPPY FRIDAY!
06-05-2009, 09:44 PM
#26
Le Mans Master
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I spoke with christail45 and he is having it done at a dealership for about 300.00 for labor, but thire car is a 2001 and would not need to change the cluster or mileage. I would add another 100 for the mileage change
06-06-2009, 02:47 AM
#27
Le Mans Master
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St. Jude Donor '11-'12-'13-'14-'15
Tim
06-08-2009, 10:41 PM
#29
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I did a quick write up and pictures to show how to remove the DIC circuit board, which also is the odometer. I did this procedure when I added HUD and a Z06 cluster to my '99 FRC. That way I kept my '99 171k odometer in the Z06 cluster, and left the 8k mile odometer to sit in my attic...
http://forums.corvetteforum.com/c5-t...post1570380674
http://forums.corvetteforum.com/c5-t...post1570380674
06-09-2009, 11:23 AM
#31
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Wounded Warrior Escort '11
The mileage is stored on an Eprom chip on the IP Cluster's board. Its updated once per mile by command of either the PCM or BCM, via the data buss. Now before everyone goes nuts thinking they can alter their mileage...they can BUT, its illegal. If you are going to do this, then follow through and update the mileage via a Tech 2 or a certified speedometer repair place so that you don't run into complications with the law. After all, you wouldn't want to buy a car that says 8K miles and later find out it was really 80K?
06-10-2009, 04:07 AM
#32
Le Mans Master
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St. Jude Donor '11-'12-'13-'14-'15
Agree on the legality issue and it's just a smart thing to do all around. BUT which board is the magic EPROM on, the Mother board or the smaller board on the lower left??????????????
Tim
Tim
06-10-2009, 11:58 AM
#33
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Wounded Warrior Escort '11
Hey Tim, I've got an extra cluster for a '99 with HUD. When I get to stop working 12 hour shifts, I'll get it out and find out which chip it is. Right now, only time to sleep and work with the added commuting time. It probably is that chip but don't hold me to it till I'm sure.
06-10-2009, 04:14 PM
#34
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St. Jude Donor '11-'12-'13-'14-'15
Awesome Dave, thanx a bunch!!
Between this Thread and I believe two others, no one seems to give a diffinitive answer on this. It would be nice for owners to just swap a board into a new IPC rather then having to get it reprogrammed...
BTW I'm kinda partial to my 99...
Tim
Between this Thread and I believe two others, no one seems to give a diffinitive answer on this. It would be nice for owners to just swap a board into a new IPC rather then having to get it reprogrammed...
BTW I'm kinda partial to my 99...
Tim
Last edited by tstar; 06-11-2009 at 04:01 AM.
06-11-2009, 09:23 AM
#36
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St. Jude Donor '15
06-11-2009, 11:20 AM
#37
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Wounded Warrior Escort '11
Have you identified the chip as an eprom or similar? I've got to find the sprare IP Cluster in my garage which I was going to do this morning but if you've already ID'd the chip, then I don't need too.
06-11-2009, 11:25 AM
#38
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St. Jude Donor '15
I'm not sure what you're asking?
I can't remember which chip the corvette uses as far as models go but it's in the pic above. I know ford uses the Motorola HC11 (http://www.xs4all.nl/~hc11/thrsim11/68hc11/index.htm) or HC12 (http://en.wikipedia.org/wiki/HC12) and I think these are the same or very similar.
If they aren't that then they are a more basic chip that is essentially just memory only. The HC11/12 chips are basically little computers with memory, processors, etc so they're a little more complicated than just the plain 'ol memory chips used by other mfg's like Honda and Toyota
I can't remember which chip the corvette uses as far as models go but it's in the pic above. I know ford uses the Motorola HC11 (http://www.xs4all.nl/~hc11/thrsim11/68hc11/index.htm) or HC12 (http://en.wikipedia.org/wiki/HC12) and I think these are the same or very similar.
If they aren't that then they are a more basic chip that is essentially just memory only. The HC11/12 chips are basically little computers with memory, processors, etc so they're a little more complicated than just the plain 'ol memory chips used by other mfg's like Honda and Toyota
06-11-2009, 12:01 PM
#39
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Wounded Warrior Escort '11
An eprom is an eraseable programmable read only memory chip. That's the old name for them but essentially in this case it allows the mileage to be updated once per mile and the chip is storing it in non-volitile memory where it remains even though power could be disconnected. The chip's numbers would have to be id'd and researched to find out if it truly is the chip where it's stored. I think the larger question here was if the circuitry containing the chips are moveable to new clusters therefore resolving the need to have the mileage updated if replacing the IP Cluster.
06-11-2009, 12:18 PM
#40
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St. Jude Donor '15
An eprom is an eraseable programmable read only memory chip. That's the old name for them but essentially in this case it allows the mileage to be updated once per mile and the chip is storing it in non-volitile memory where it remains even though power could be disconnected. The chip's numbers would have to be id'd and researched to find out if it truly is the chip where it's stored. I think the larger question here was if the circuitry containing the chips are moveable to new clusters therefore resolving the need to have the mileage updated if replacing the IP Cluster.
Yes, you can transfer that board to another cluster and transfer the mileage. Somewhere in this thread someone agreed that they had done it succesfully.
