left the C6 in the garage (50 degrees) for 3-4 weeks without starting. Streets finally dried yesterday so went to drive the car and sure enough batt was dead. You'd think GM could solve this problem. I don't think I should have to buy a charger/tender for a $60K car. I'm going to call the dealer in the AM and see what he will do.

 

what year,auto or stick,etc???Although sitting for 3 or 4 weeks will kill any battery I think.

 

Not to bust your bubble, but 3 weeks is just about the max a C6 battery will last. It all deepens on your battery’s general age/ condition to begin with. A lot of it could also depend on how much driving you did before you parked the car

AS you have no info in your profile, we do not know anything about your car. Year, tranny, when purchased, ETC.

Doubt your dealer will do much if anything for you If your going to leave your car, that’s ANY car for 4 weeks, brake down spend about $25 (Wally World) and get a tender

 

What year? What transmission? What modifications? How old is the battery? The car has many systems and electronics that can contribute to small drains on the battery system. Where is your fob kept, do you have a radar detector or other small electronic gadget plugged in? Even a few door openings can make the difference in the battery living or dying under those conditions.

Car dead after being left for 4 weeks without starting is not DBS. Car left for <2 days with dead battery is. How many other cars have you left for 4 weeks and had them start right up. The cost of the car should have nothing to do with the need for a battery charger. I have my $60K car on a battery charger and mine starts right up. Seems to me if it works, why take the chance.

 

Not true. My motorhome can go six months and fire right up. It does not have a computer and other electronic robbing devices which helps.

 

Ah yes the good old days.

 

Funny, my other cars can be left that long and no problems. GM has a drain in the electrical system that they need to address.

 

Probably not an AC DELCO battery either.My vette sits without starting for a few days and I can hear the battery strain a little when I start it.Mine is an 05 mz6 w/9243 miles.No DBS as yet,but from the sound of it,I may go put the battery tender on today.

 

My Lexus was left sitting for three weeks while I recovered from a surgery and it started right up for me. It also has more computer BS than the vette.

 

AC DELCO BATTERY??

 

I'm new to the Corvette world but I can draw some conclusions (Probably wrong but I'm fearless).

I think the fact that we have FOBs will cause a drain. There is an antenna and it's looking for the signal from the FOB. Seems to me it needs a smidge of juice to stay "looking" for signal. Whether it sees a FOB or not, it MUST continue to look.

Radio, something is holding the stations into memory. Sounds like another smidge of juice.

I'm sure there are other things sitting there at "hold" that require a smidge of juice (alarm system?) to remain ready for use.

Letting a car sit for 4 weeks is asking too much from any battery. Either hang a charger on it or drive it every 4 or 5 days and I bet it'll start just fine.

My $.02.

Elmer

 

Too much electronic mumbo-jumbo.
Smaller battery and charging system to save on weight and dollars.

3 weeks is it for a well maintained delco battery, otherwise you need a larger battery or charger.

 

The FOB being too close is generally not a problem. It might reduce the 3 weeks of battery life by maybe 1 day. Everything shuts down to a minimum until a FOB button is pushed, so it doesn't kill the battery in like just a few days.

 

 

That's right, the RCDL module must always be powered to enable the keyless entry and push button ignition gimmicks.

No, the radio uses NVRAM to hold data when the power is off. That's why your station presets are retained if you disconnect the battery.

Alarm system and window indexing modules for sure. BCM has power too. Might be some other things as well.

Well, my 98 Dodge RAM, which has lots of electronics, though not a keyless entry/ignition, can sit for several weeks at a time without draining the battery (original battery). AFAIK the only thing drawing power in it when it is off is the clock, and it only draws a minute amount of power.

My 97 Intrepid, which hasn't been driven since August of 2005, started right up last week when I was showing it to a potential buyer. (That surprised hell out of me since I'd done nothing aside from parking it to properly store it for such a long time.)

OTOH, my old 78 F350 will kill the battery in 3 months if it isn't started. The aftermarket stereo is the culprit. It draws power all the time, not a lot, but enough to drain even the Optima battery in the truck if I don't drive it every couple of months. So I put a battery disconnect on it. I have to reset the radio presets when I fire it back up, but at least it will fire back up after sitting for a long time.

 

:
I have two! two cars that sit in my garage while I drive my silverado all week. 1 is the 07 mr a6 vert which I drive only on clear weekend days and the other ismy 2000 Cadilliac SLS. Both Ac delco batteries. The caddy has 49K miles on it so you know it does a lot of garage sitting.
I have found that only driving either car one day a week keeps the batteries charged and have had no start up problems,
Once a week is all it takes! Sometimes I do not drive the caddy for two or three weks but no longer as I do not want things to start those squeaky noises.

 

My vette is a 2006 C6 Z51 Roadster with 6 spd. auto. The car and the battery is 9 months old. I have a2005 Ford Escape that sits sometimes 6-8 weeks and it starts fine. Maybe I have a defective battery or need to replace with an Optima?

 

I've left my 05 for up to six weeks and it always starts. Sounds like a weak battery. Wife gets a new caddie every year and it is not unusual for a new battery to go bad before she gets the next years model.

 

i don't understand this car if i leave the c6 for a a few weeks without starting it...theres no way it'll fire up....the c5 i left for months on end and she used to have no issues firing up...(it was an 01 and it had its original battery with no issues)

 

Think maybe it is sun spots?