I took the C-6 into the GM dealer today because of DBS that I reported on here last week. They tested, and after an hour and a half said. There is no drain going on and the battery is ok. but that the radio needs replacing because it's dead! Funny that I listened to it on the way to the dealer. The mechanic then admitted that it went dead after the reflash. New radio on order and to be installed tomorrow. I saw the paper work and they install RECONDITIONED radios from the factory. I'm not very happy!

 

So....... if they didn't do anything, and nothing was wrong...... why did they "reflash" the thing? Probably just tripped the theft circuit in the radio. I thought they could recover that with your radio code????

 

Where can I find the code??

 

Rick,

Send me your vin and I can check for some GM updates that may solve the problem. The 2006's have OS update to resolve a DBS issue.

Howard

 

I. M. sent

 

Check your PM! That vin wasn't correct!

Howard

 

Resent correct VIN, thanks

 

Info sent.

Your operating system has been superceded with a new on that address's a battery drain issue.

I would have the PCM reflashed at the dealer. If you have a tune in the car it will be wiped out so make sure you either have a backup or your tuner does.

Howard

 

Howard, I guess my tune is toast!! What does DTC mean? Amazing how you can know this stuff!

 

DTC=Diagnostic Trouble Code I know cuz I got a HP Tuner and do my own tuning.

 

Rick,

Was your tune done locally??

I sent you a PM about the DTC stuff. Some of the current update is to address several "false" DTC's that can occur causing the technician to chase his ***.

Howard

 

I went to a local tuner and it was so close that he could hardly get it better if he had tried. (373 hp) so we left it how it was. He said he had never seen one so close as this. So he has no program to save.

 

Thats even better yet for you. The OS doesn't change the major components of the bin file. Its a operating system update. The PCM in your car is like the desktop you are working on. There is a OS and then there are the files. This is like going from Windows 98 to Windows XP. Since you timing and fueling is untouched all you need is cooling fan, TM and whatever minor adjustments your tuner might have made changed.

This is why ever car I tune I check for OS updates prior to tuning!

Howard

 

The PCM should be fine, its the RCDLR that needed to be reprogrammed! See the attached bulletin:



Dead Battery, No Crank/No Start (Reprogram Remote Control Door Lock Receiver (RCDLR) #07-06-03-001B - (03/21/2007)



Models: 2005-2007 Cadillac XLR (Including XLV-V)

2005-2007 Chevrolet Corvette (Including Z06)

Built Prior to the Following VIN Breakpoints:




--------------------------------------------------------------------------------

This bulletin is being revised to update the correction information. Please discard Corporate Bulletin Number 07-06-03-001A (Section 06 -- Engine/Propulsion System).


--------------------------------------------------------------------------------
Model
VIN Breakpoint

XLR
75600571

Corvette
75112132


Condition
Some customers may comment on a dead battery after the vehicle has been parked for a extended period of time. Typically, the battery will last approximately two weeks, depending on the initial state of battery charge.

Cause
A software anomaly within the remote control door lock receiver (RCDLR) causes an additional 30 mA draw on the battery when passive locking is enabled and the vehicle is parked.

Correction
Do This
Don't Do This

Reprogram the RCDLR.
DO NOT replace the RCDLR.


Important: Use the Pass-Thru method when programming and select "Replace and Reprogram ECU."

A new calibration has been released to correct this condition. Reprogram the RCDLR using SPS. This new service calibration is available on TIS2WEB.

Important: On Corvette models, prior to reprogramming, remove the Radio/S-Band/VICS 15-amp fuse and the HVAC/PWR SND 10-amp fuse from the I/P electrical center (passenger floor). Also, the ignition must be in the "Key On Engine Off" mode.

If the programming does not finish successfully and the RCDLR appears to be in a "locked-up" state, DO NOT turn off the ignition, it can be reset by removing the RCDLR fuse (#11 in the UBEC) for at least 30 seconds and reinstalling it. If the ignition was turned to OFF after the "locked up" condition occurred, its possible to continue programming by adding the VIN manually in TIS.

Tip
Transmitter programming and tire pressure learn procedures are NOT necessary after this reprogram.

Please refer to SI for additional information on other potential causes of battery drain.

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

R9723*
Remote Control Door Lock Receiver -- Reprogramming with SPS
0.4 hr

* This is a unique labor operation number for bulletin use only. This number will not be published in the Labor Time Guide.

 

I'd stop by and ask to see what is wrong with the radio. Doing the RCDLR reflash shouldn't touch the radio. Ask which reflash they did, did it come from the DBS bulletin and the RCDLR reflash? Is the radio just locked up because the disconnected the battery or interrupted a BCM reflash? If they don't know what they are doing (highly likely) tell them to call TAC for instruction on how to get the original radio funtioning again. I doubt there is anything wrong with that radio.

 

That's true DBS.
Specifically nothing will be found on examination, but the DBS will be cured with the reflash.

One thing you can try to see if you have DBS:
This works for me especially if I park on a steep uphill.

Shut down properly in reverse, and then move the shifter to neutral.
Sometimes mine says to shut down in reverse, proving that the process didn't register.

Now why the radio went south, I haven't a clue.

 

I took it back today and had the radio replaced, I guess I'll wait and see on the DBS. If it acts up again I need to go to a GOOD Corvette technician for the reflash.

Anyone know of any in the Northern Burbs of Chicago?

 

Assuming you had the reflash, it should be curative as experienced here on the forum. Get used to checking that little red light flashing by the radio. If it's still flashing on day #3 after a proper shutdown, you're then past DBS in time, and you're good to go weeks before the battery dies from the usual and natural causes.

 

Hey Rick,

Howard definitely knows his stuff, we've had a few conversations in the past. Basically the new OS that will be programmed into the computer will be the same tune file with a different patch that affects the DBS issue, so you should still be right where you were before the flash. I know it still might be a hike, but the guys at Bill Kay (Bolingbrook) do a lot of aftermarket installations on vettes for their customers (headers and such). Talk to Rich or George.

 

It might be worth the drive, after all I drove all the way to get to you because I had heard nothing but good about you. So, Bill Kay is only half as far as you are.