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Do I need a specific PCM??

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Old Jun 22, 2006 | 02:34 PM
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Default Do I need a specific PCM??

I'm sure I will need a 05 or 06 vette PCM w/ theses details: LS2/T56, C6 dash, & HUD. Any other options??
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Old Jun 22, 2006 | 04:43 PM
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I would think as long as it's an LS2 PCM you should be fine. Seems like the rest is just in the program, but not sure.
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Old Jun 22, 2006 | 04:44 PM
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Yea I'm wondering about the HUD and what not....
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Old Jun 22, 2006 | 04:50 PM
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Check out a corvette forum. Last time I read they were swapping HUD in non-HUD cars w/out much work. I never heard any talk of PCM flash or swap.
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Old Jun 22, 2006 | 05:09 PM
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The HUD has its own harness that taps off the Instrument Cluster. Easy to add.

I do see a few of issues with using the C6 cluster, though. First is the fuel level gauge. There are two fuel level sending units (one for each tank) and I don't know of anyone that has successfully made it work. Second is there will be numerous idiot lights on the cluster for things like ABS, Traction Control, etc. And finally there will be numerous error messages stored and displayed on the text display because of lack of communication with the other electonic modules from the C6. Most if not all of the gauge information comes via serial data from the PCM. There was another guy trying to get a C5 cluster to work, so do a search and see what comes up.
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Old Jun 22, 2006 | 05:12 PM
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Here's the thread on the fuel level gauge.

https://ls1tech.com/forums/conversions-swaps/522339-c5-fuel-level-sensor.html
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Old Jun 22, 2006 | 05:20 PM
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Well I will be using C6 Z06 brakes w/ ABS and almost all other little options. And can't I just delet wierd codes it throws??
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Old Jun 22, 2006 | 05:26 PM
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Is it possible to open the cluster, take the fuel guage apart, add say an Auto Meter behind w/ the stock needle and hook it up to on level sensor? Or 2 fuel cells in the trunk?
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Old Jun 22, 2006 | 06:26 PM
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Originally Posted by 11secproject
Well I will be using C6 Z06 brakes w/ ABS and almost all other little options. And can't I just delet wierd codes it throws??

If you use the ABS, than you have to use the traction control and the Active Handling since it is the same computer. I looked into this quite a bit and decided not to do it for several reasons. First and foremost, your car is not a C5/6 and you do not have the same weight, weight distribution, center of gravity, wheel base, track width, suspension geometry, etc. These are all factors that are programmed into the Active Handling/Traction control system.

If you could at least match the C6's weight distribution and use stock sized C6 tires and match your steering ratio to a C6 and placed all the sensors such as yaw rate and latera accerlation sensors in just the right places, then maybe it could work. But probably what would happen is the moment you start to drift the computer would compensate for a C6 and you would end up in a ditch. Some C5 owners that have installed racing seats and disturbed one of the sensor have complained of problems with the system. It is pretty picky.

You also cannot reprogram anything on a C5/6 except for the PCM. The algorithms for the ABS and Traction Control are programmed into the EBTCM and some of the error codes are programmed into the Instrument Cluster itself.

I'm not trying to rain on your parade, its just after reasearching the ABS/TC/AH system, I believe it is dangerous to install it on a different car than it was intended for.
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Old Jun 22, 2006 | 06:28 PM
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Originally Posted by 11secproject
Is it possible to open the cluster, take the fuel guage apart, add say an Auto Meter behind w/ the stock needle and hook it up to on level sensor? Or 2 fuel cells in the trunk?
Your best bet would be to install two senders in one tank. One that reads from full to half and one that reads from half to empty. You can't use two fuel cells as the C5/6 tanks are not at the same level when driving. The right tank pumps to the left tank and fuel is pumped from the left tank to the fuel rail. So at half full the right tank is empty and the left tank is full.
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Old Jun 22, 2006 | 06:57 PM
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Never knew any of this...thanks for the info!
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