C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Low voltage

Old Sep 10, 2021 | 05:25 PM
  #1  
Chrismedic's Avatar
Chrismedic
Thread Starter
Heel & Toe
 
Joined: Jul 2021
Posts: 15
Likes: 1
Default Low voltage

So I got the infamous service charging system error message I checked all the codes in the history was just some key cylinder codes and something about the passive security system code so I did replace the alternator I did replace the battery and what nothing really running and the car at highway speeds I'm only getting 10 and 1/2 volts what do I check next thank you in advance

Last edited by Chrismedic; Sep 10, 2021 at 05:25 PM.
Reply
Old Sep 10, 2021 | 06:32 PM
  #2  
C5 Diag's Avatar
C5 Diag
Moderator, Tech Contributor
Supporting Lifetime Gold
10 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Sep 2013
Posts: 15,591
Likes: 4,055
From: Cape Coral, Florida
Default

Go to the “Sticky Threads” at the top of the Tech Section and read the one concerning “alternator designs and issues” !!…best to have got your old alternator rebuilt if it was diagnosed correctly as being bad !!

Last edited by C5 Diag; Sep 10, 2021 at 06:32 PM.
Reply
Old Sep 10, 2021 | 07:02 PM
  #3  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,138
Likes: 802
From: Espanola New Mexico
Default

It's very possible that you may have gotten a bad alternator right off the shelf. Good advice already given, have your old alternator rebuilt.
Reply

Get notified of new replies

To Low voltage



Thread Tools
Search this Thread

All times are GMT -4. The time now is 05:38 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 11:09:53


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE