dead battery now onboard computer dead
Thread Starter
6th Gear
Joined: Jul 2007
Posts: 6
Likes: 0
dead battery now onboard computer dead
I have a 2007 Vette with about 4K miles on it. Had the battery go dead 3 times in last month. I drive it every weekend so should be ok. Brought it into the dealer, and they first said there was a Tech Service Bulletin out on this. However that was already applied to my Vette they said. So they pulled the dash apart and eventually found a bad ground. Now the computer is not working so they are replacing that. Car has been with them 4 days going on 5.
Question has anyone else experienced this problem or similar scenario? I am interested in any advice as to what I should be looking for when I get the car back to make sure they fixed it 100%.
Question has anyone else experienced this problem or similar scenario? I am interested in any advice as to what I should be looking for when I get the car back to make sure they fixed it 100%.
Instructor
Joined: Jan 2006
Posts: 246
Likes: 4
From: Denton County Texas
After normal diagnosis, a concern can not be located, check with the customer or the Sales Department and see if the vehicle was equipped with a "LoJack" security system or similar security system. These systems use a small transmitter or GPS locator that is hidden in the vehicle and is usually unknown to the technician. These transmitters are usually installed in the "hot at all times" dome lamp circuits and prevent the Body Control Module (BCM) from entering the sleep mode. Please check with the customer and Sales Department before replacing any parts on the vehicle.
What is the current draw, most vettes are around 23 ma when all modules are asleep. Ask them what the millamp draw is. Also I guess the remote control door lock receiver has been updated with the new software?
What is the current draw, most vettes are around 23 ma when all modules are asleep. Ask them what the millamp draw is. Also I guess the remote control door lock receiver has been updated with the new software?
Thread Starter
6th Gear
Joined: Jul 2007
Posts: 6
Likes: 0
Thanks for the response, will pose these questions to the service manager. Just got car running today with new computer. Apparently they had to tear the dash apart to find the wiring issue and now need to put everything back together. The thought of what they did to the interior however is making me cringe.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
I sorta did. My first 2006 was broke on the way home from the dealer and was towed in 5 times in four weeks because the car would not start or quit running. GM replaced the car and I was told by the dealer that GM found a bad ground and that is what caused the problems.
Advanced
Joined: Jan 2006
Posts: 99
Likes: 13
My 2006 A6 had similiar problems during the first month. It had the computer replaced and has now gone 11 months and 7,000 miles with no more related problems. Other problems, but not computer related. I had the same problem with my 1997 C5, both silver.
Le Mans Master
Joined: Dec 2004
Posts: 5,759
Likes: 539
From: AZ
St. Jude Donor '06-'08-'10-'11-'12-'13 '14-'15-'16-'17-'18-'19
Very similar scenario. Make sure that they initialized the ECM correctly. It requires they take the fuse out of the radio then start the car and do some checks. Once they have done that, then shutdown, reinstall fuse then start up again and let the radio and ECM "get to know each other". I know this sounds a little weird but having just had my ECM and TCM replaced, this is the procedure. The dealer should do this all for you. Just make sure the A/C works and all the gauges work and all the info available in the DIC work like they are supposed to. After that, it should all be good. Good luck.
