w.huynh

Hey guys and gals,

Here is my situation, hopefuly some of you can help me out. I have a 05 c6 and it's been parked for about 6 months. I came across a wicked deal, $100 bucks for a brand new optima battery so I decided to replace it today and get the car on the road.

I took out the old battery, put in the new otima. Once connected the alarm goes off and doesn't shut off. Keep in mind that the car has just been sitting for 6 months and the keys have been laying on the passenger seat.

I've tried pressing the unlock and the alarm button on the key fob but nothing seems to shut it off.

Am I missing a step? I've tried searching on the forum but came across nothing.

I hope I have given enough information. Thanks in advance!

Knob Jockey

Does the alarm shut off after 2 minutes like it's supposed to?

If it does, what happens when you then try to open the door using the fob?

How did you get in the car with the dead battery? I'm assuming the windows were down and you used the manual door release.

Just because you left the fob on the seat doesn't affect anything but if it's an '05, it's probably time that you replace the fob battery.

w.huynh

Thank you so much for the quick response.

The hooked it up to let it sit for the 2 minutes like you said. After about 20 seconds the alarm shuts off.

I try to open the door with the fob but no luck. I put the fob on the drivers seat and press the acc button and it says "no fobs detected".

The door windows are down, and the trunk is open by the way.

I'm going to run to the mall and buy myself a new battery for the fob remote.

I'm just worried, after putting in the new battery, I might have to reprogram the fob? Hopefully things dont get really messed up and I have to get it towed to the dealer in the end. I really wanted to drop off my car at the shop tomorrow for full exhaust install ...

stingrayl76

Not sure about the 05 model year, but if the fob battery dies on my 2010, you just open the glove box, slip the fob into the slot located on the left side and push the start button. There are contacts in there that will power the fob from the car battery.

Chevy Cust Svc

I would be interested in whether the new battery is the issue as well. I have seen new batteries act up and not be able to handle the Corvette. Either way, whatever happens, do not forget that you will have to go through the re-indexing process with your windows.

Good luck,

Brent
GM Customer Service

lastcowboy

try to disconect neg. side few min and put it back on.

AORoads

you don't say whether you drove the car, started it, or that the battery was fully charged before you put it in. as seen on CF, cars do very strange things (C6s, that is) when the batt. is run down. could it be that you have a minimally-charged battery, even tho it's brand new?

weathermaker

I changed my 05 battery about a month ago. It was totally dead. Alarm went off as soon as cables touched the posts. Shut off alarm with fob. I would guess is fob needs a new battery also. He should be fine and will have to re index windows, set clock and possibly other items. I also put on my charger/maintainer to bring the new battery to a full charge.

CO Lightfoot

New FOB battery is the cheapest/easiest next step. I bet that fixes the alarm issue.

From another thread:
And you definitely should NOT have to reprogram the fob.

More tips & discussion: http://forums.corvetteforum.com/c6-c...y-warning.html

BTW, the fob-in-the-glovebox-slot trick should always work. And it's an easy way to test the fob. Just be sure the fob is oriented correctly.

tlcj

OP, did the fob battery solve this issue?