Originally Posted By: lucerne06
Hello BIGMIKE, there may have been a problem with the battery draining issues on the silverado's. AllData.Com shows a battery TSB, not a recall, under the 2007 Silverado. The October 2006 issue date though sounds wrong. Too early for the NBS. They list both 2007 Silverado and 2007 Silverado Classic however and this TSB is not listed for Classics. . Unfortunately I don't have an account there and I am not paying to view the TSB. I looked for it elsewhere but only found it on AllData.
Electrical - Battery Goes Dead Overnight
TSB # 06-06-03-009
Issue date October 2006
The manufacture date for my truck is July of 2005. The battery managed to last from 07/05 (maybe earlier, depending on the battery's manufacturing date) to 12/10, so roughly 5.5 years for a 6 year battery. I have a feeling a cell died in it. I don't think your AC Delco battery will last all that much longer, especially if it is showing symptoms of slow cranking, etc. Mine starting with slow cranking, so I put a trickle charger on it during the evenings. That got me about 1 or 2 more months out of it. I left on vacation only to come back to it completely dead.