Won't start need help please!!
Thread Starter
1st Gear
Joined: Feb 2007
Posts: 1
Likes: 0
Won't start need help please!!
So I left my 05 C6 in the garage for two weeks while I was up at school. I ensured the manual trans was in reverse prior to leaving and it did get alittle cold while I was gone. Got home yesterday and the battery is dead. Tried to jump it off of 2 seperate cars and no luck. Kept giving me the "service colum lock" and "no FOB messages" in the DIC. It appears to be trying starting but does not seem to have the juice to turn over when I hit the start button.
Any ideas, do I need to replace the battery and give it a shot?
Thanks ahead for any help you can give
Any ideas, do I need to replace the battery and give it a shot?
Thanks ahead for any help you can give
Drifting
Joined: Apr 2005
Posts: 1,746
Likes: 0
From: Upper St. Clair PA
St. Jude Donor '06-'07-'09
Had a similar problem over one year ago. I put a charger on it for a couple of hours, and finally got it started. Then I got a battery tender & priority start unit, and no more problems. I still have the original battery. The reflash for 05s is a must. 
Pro
Joined: Jun 2006
Posts: 505
Likes: 0
From: Plantation Florida
My 06 A6 would not start Weds morning. Called roadside assistance. Guy came had to use his 25 ft cables car was facing in garage. He tried to connect using the chevy recommended way would not start. He connected to battery terminals had me hold off a few minutes kicked up his throttle then I tried and it started. Took it to the dealer they said dead cell gave me a new one.
Melting Slicks
Joined: Oct 2000
Posts: 2,156
Likes: 3
From: La Mesa CA
Why is the BMC reflash a must. I have not had it done, and have no problems.
Melting Slicks
Joined: Dec 2004
Posts: 2,009
Likes: 37
From: Laurel Maryland
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13
Drifting
Joined: Apr 2005
Posts: 1,746
Likes: 0
From: Upper St. Clair PA
St. Jude Donor '06-'07-'09
Unfortunately, many 2005 M6 owners have had serious problems with the mandatory shift-to-reverse shutdown requirement which seems to cause the infamous BDS (Dead Battery Syndrome). This subject has been discussed endlessly here on the CF. Do a search if you would like additional details, and consider yourself lucky if you have avoided this loss of reliability.
The "flash" has been GMs only response to this apparent engineering shortfall, and, who knows, it might actually help.
The battery tender/priority start "fix" is probably the best approach if you want to be proactive, and not let the car let you down.
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