I need to replace the battery in my 2000 C5. My question is will it disable my radio after the replacement? If so, I don't have a radio code to enter. I have a couple of other vehicles that require a radio code any time you replace the battery. I hear from one source that if you disconnect/reconnect the cables in a certain sequence it can be done without disabling the radio. Anyone have experience with this? Any advice?

 

I have changed the battery in my 2000 Vert several times and never had a problem with the radio. You might have to reset stations and your memory settings for seats, etc. Not a big deal. Go for it!

 

You can buy a little device to keep your settings alive - it is a 9V battery hooked to a cigarette lighter adapter - you plug it in and replace the battery - it keeps the memory powered. If you do end up locking the radio, this may help.

 

Sorry if a dup, my last reply seems to have disappeared into the aether. On my '01, I DEFINITELY had to reenter my radio security code.

As for the 9-volt batter "save" devices, they are specifically not to be used (according to the ads) on later C-5s; but I don't know the year break. They are listed in the usual Vette catalogs.

All the best... get an Optima!

 

If you know the code it should be no problem. If a code has never been set it is no problem.

 

I replaced my battery 2 weeks ago. (y2k vert) no problem whatsoever
My seat even came back to a driveable position It must default or something because I was not that quick. No special precautions either.
GO FOr IT!

 

If the red security light on the radio is not blinking now, then the code feature is not activated and you have nothing to worry about.

 

I see my brother Y2K C5er are starting to replace the batterys. My Y2K battery is still working, but during the winter if I dont use it for 2 weeks I trickel charge it for a 1/2 or so just to warm up the battery. This OEM battery has died on my twice when I did not start the car twice for almost 3 weeks. I guess Ill be due by the summer for a battery. I just put in a 25% ASP pulley and I wonder if that will make the charging just a hair worst

On a amp/volt meter, what should the cold battery be charged at?

 

If you go to other at the top of the page , then to tech tips, there is a procedure to get your code. It is long and involved but it works. Here it is for the lazy among you! The following procedure will give you a new code that you can use instead of your personal code. Using this new code, you can “unlock” your radio and then “re-lock” it with a new code if you wish. Prerequisites: The radio must be in LOC mode NOT in INOP mode. Let me explain. If you have activated the Theft-Deterrent feature of your radio and loose power, the radio goes into LOC (theftlock) mode. With the ignition on, you must use the MN and HR buttons to enter you personal code in order to unlock it (The instructions are on page 3-27 in your Y2K Owner’s manual). If you fail to enter the correct code eight (8) times, the radio goes into INOP mode. You have to wait an hour with the ignition on before the radio returns to LOC mode (go for a long drive somewhere). Procedure: 01. Turn the ignition ON (The radio displays LOC) 02. Hold down the Radio Presets 2 and 3 buttons for six seconds 03. The radio display changes from LOC to a three-digit number. Write this number down. Don’t take forever, fifteen seconds max before the next step. 04. Press the AM/FM button 05. The radio display changes to another three-digit number. Write this number to the right of the first one. 06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05 07. Call 1 800 537 5140 08. Press 1 then # (pound). You’ll hear “Invalid Code, try again” 09. Press 139010 then # (pound). You will be asked to enter your four or six digit code followed by * (start) 10. Enter the number from STEP 6 then * (star) 11. Listen to the four-digit number and write it down. It will be repeated twice 12. Turn the ignition ON (The radio displays LOC) 13. Use the MN and HR buttons to enter the code from STEP 11 14. Press the AM/FM button. The radio display changes to SEC Your radio is now “un-locked” and usable. The Theft-Deterrent feature is STILL active! If you want to disable it, use the instruction on page 3-27 in your Y2K Owner’s manual. Use the code from STEP 11 instead of your personal code. Note: This tip originated from LOTZAHP, Austin TX (credit must be given where credit is due). I verified it on an Y2K C5 with a locked radio - mine.Mine too!

 

I too will be replacing the baterry in my 2000 frc. It seems like they are all going at once. I think the reason is that the car has so much electrical draw even when not running that it just drains them down. Plus i have heard that some of our batteries were prone to leaking acid. This should have been a recall because the computer and related wiring is right underneath it. I will replace mine with a Gel type ( perhaps the optima). Even better I may move it to the back.

 

Your very lucky to have gotten this much time. My 2000 FRC is on it's third. I think the failures are twofold. Crappy Delco batteries placed in a very high heat area if you roadrace.

 

Just for what it's worth, a damage Optima CAN leak acid.

I got one in recently that had apparently been dropped while in the Optima box (they used to use more of the ultra-dense packing foam around the bottom of the battery and NEVER arrived damaged).

Anyway, with a small crack in the bottom of the battery case, it DID leak a considerable amount of acid when left overnight in a plastic pan.

All the best.

 

11 - 13 volts