Battery dead

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Feb 28, 2026 | 03:19 PM

candipogo

Thread Starter

Racer

Joined: Feb 2016

Posts: 306

Likes: 55

From: Hernando, ms.38632

Battery dead

I need to put a new battery in my 2007 z51 coupe. After the battery is swapped do I have to do anything besides index the windows? Will i be able to open the car as normal.Will my fobs work as they should? I'm almost 80 and some of this is kind of fuzzy.
thanks to all

Feb 28, 2026 | 03:39 PM

C5 Diag

Moderator, Tech Contributor

Joined: Sep 2013

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From: Cape Coral, Florida

Just index the windows.

Feb 28, 2026 | 04:15 PM

dr_gallup

Safety Car

Joined: Feb 2016

Posts: 4,456

Likes: 1,391

From: SC

Quote:

Originally Posted by C5 Diag

Just index the windows.

Yup, nothing else is lost.

Feb 28, 2026 | 05:58 PM

1bdvet

Team Owner

Joined: May 2000

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From: Plantation Florida USAF(Retired) 1966-1990

U.S. Air Force

St. Jude Donor '05 thru '26

NCM Sinkhole Donor

Quote:

Originally Posted by C5 Diag

Just index the windows.

Just before disconnecting battery lower the windows, then new battery in place index the window.

Feb 28, 2026 | 06:38 PM

oldcanuck

Burning Brakes

Joined: Oct 2018

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Also make sure the terminals are good and tight especially the negative ground one. They can be tricky and seem tight but may not actually be .

Mar 1, 2026 | 08:45 AM

RobLo

Melting Slicks

Joined: May 2010

Posts: 2,037

Likes: 331

From: Long Island New York

Just a point of interest, I bought a new battery last year, put it in and continued having all kinds of problems. I started thinking either I got a bad battery or something else was wrong. As a last resort I put the charger on the new battery overnight and next morning fully charged the car was fine. These cars are very sensitive to voltage needs.

Mar 1, 2026 | 12:44 PM

candipogo

Thread Starter

Racer

Joined: Feb 2016

Posts: 306

Likes: 55

From: Hernando, ms.38632

Batttery

Quote:

Originally Posted by 1bdvet

Just before disconnecting battery lower the windows, then new battery in place index the window.

went to shop and found dead battery. I don't drive the car much. But battery was on a 4 amp maintenance unit. Battery is 7 years old. I don't let it get below freezing in my shop. I guess I'll have to let windows down after i get new battery installed.

Mar 2, 2026 | 08:40 AM

dr_gallup

Safety Car

Joined: Feb 2016

Posts: 4,456

Likes: 1,391

From: SC

Quote:

Originally Posted by candipogo

It doesn't matter. It's just hard to open the doors with the windows up and the battery dead/disconnected. Since my battery is in the back, I've changed/disconnected it several times with the windows up.