I sent my PCM to Chuck at Westchester corvette to straighten out thwe fuel shutoff and get a tune. The fuel shutoff is now programmed out. But I am still getting the messages on my dash. It won't allow the nomal readings to come up as it is always there.
How do I fix this problem now. I am getting another CLB from Crvettes of Dallas to replace the one they had sent me. I hope that solves the problem. Otherwise I have done everythionmg to try to fix this.



By the way the car feels like a different car since Chuck worked his magic on the computor.

 

on your dash with key on

 

And the message comes right back.

 

That was only a work around. The true fix is to flash it back to "factory tune" meaning before any recalls were done by the dealer and put back CLB. (plus COW tune it since its out of the car)

Im surprised chuck didnt do that, from what ive read hes the only CF vendor that can do it.

The replacement CLB will prob do the same thing

 

I thought the column lock bypass problem and the fuel shut off were related to the BCM. I was under the impression the BCM told the PCM to shut the fuel off. Thinking the car was being stolen. Chuck raised the fuel shut off from 2 MPH to probably 200 MPH. He explained to me that I would still get the messages.

I have now had this problem for about 3 weeks. And have read countless threads on the subject and it seems that there isn't a real answer for the problem. Or nobody seems to know.

 

You are still getting the messages because the problem is still there. BCM is detecting faulty CL thus will cut the fuel for safety. but because the max mph to cut the gas was raised to 200mph, the fuel pump will not cutoff like before. In other words there is still a communications problem between your PCM and BCM thus triggering the DIC warning messages each time you start the car.

The only way to fix this problem all together including no DIC messages is to flash it back to factory tune. I say factory tune because it is the GM recalls that screws it all up. (They flash it with an update in recall #2 that causes the fuel cutoff issue) Once you have it back to factory tune then put the CLB in. The column will not lock ever again and the PCM will be communicating with the BCM properly. (no messages)

My car only had recall #1 done. I put in the CLB and no issues at all for 5 years now.

Heres what I would do:

1. Ask chuck if he can flash back the PCM to a factory tune or bring it to a state that is prior to any GM recalls. He made a thread on this a few years ago that it can be done by his shop.

2. re-Tune the PCM from that point on to get the performance upgrade you just got.

3. Install CLB after you put back the PCM in the car. (or since its in there already just leave it)

Your column will not lock and there will be no DIC messages.

 

What you are saying is the problem is with the BCM. So why does the PCM need to be reflashed to solve the problem, just reprogram the BCM. Chuck was aware of the problem and I can't see him charging me all that money knowing that the DIC problem would still be there and that I would have to waste the tune he puit in there to have it reprogrmmed back to stock. Dosen't make sense.

Like I said before I have had thuis problem for the past 3 weeks and have read contless threads and have not gotten 2 of the same answers.

 

What I am saying is that you still have the bad PCM flash update from GM. It was just modified to prevent fuel cutoff and then edited again with the performance tune.

You will still have the DIC messages each time you start the car.

And your right, it wouldnt make sense to tune it then have it flashed back to stock. But that is why I was surpirsed why it wasnt flashed back to stock from the beginning then tuned.

Oh well, at least you can enjoy the summer now with the car.

 

The messages do seem less frequent. Considering I haven't used the car over the winter maybe as I use it and the battery gets to full charge it will wok when I pull the fuses. I also have another CLB on the way so I can make sure that wasn't the problem.

I still don't think there is an answer for this problem. It seems to be a bunch of guesses that some happen to work. It doesn't make sense why GM would have the car screw up like this when ever the battery gets low.

 

clb should take care of the message as long as you can get rid of the message before you put the new clb on.clb will not remove the message but will keep it from recurring.

 

Thats not true because even with the clb I still get the pull key wait 10 sec. I had my guy bump the fuel shut off up to 200 and I periodically get the pull key wait secs. I to am interested in a perma fix for this bullshi3. Ive tried pulling fuses, jumping cables. I've learned my vette is like my women, she does what she wants. haha

 

aren't you putting in a new clb? wait until you get it in and see. again, you can't install the clb if the message is present you have to get rid of the message first or wait until it goes away, then install the new clb. you did mention low battery so make sure it is up to snuff (13.5 v). low battery can also cause this problem but based on what i have seen on this forum it is either a clb or battery most of the time.