C5Z no start without Jump
Thread Starter
Burning Brakes
Joined: Feb 2006
Posts: 834
Likes: 86
From: CT
C5Z no start without Jump
Have stock C5Z . on battery tender. Car only starts with jump.
Alternator is charging. Battery is fully charged - showing 12.6V.
Do I lean toward starter? or get new battery to see - or bring batter to see it load tested?
Battery is 2021
Alternator is charging. Battery is fully charged - showing 12.6V.
Do I lean toward starter? or get new battery to see - or bring batter to see it load tested?
Battery is 2021
Le Mans Master
Joined: Jul 2010
Posts: 6,002
Likes: 722
No Hostility Be Happy
Joined: Aug 2018
Posts: 10,061
Likes: 7,375
From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
100%
Also
Make sure the crappy side post connections are perfect and tight.
My son had this happen to his old 98 Camaro SS. You could try and start it and NOTHING. You can jump it and it will run.
Finally I had him just hold the key in crank while I was yanking on battery cables and bam it turned over. Ended up being a not visible bad side post connection.
Also
Make sure the crappy side post connections are perfect and tight.
My son had this happen to his old 98 Camaro SS. You could try and start it and NOTHING. You can jump it and it will run.
Finally I had him just hold the key in crank while I was yanking on battery cables and bam it turned over. Ended up being a not visible bad side post connection.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,500
Likes: 3,999
From: Cape Coral, Florida
Just because the battery shows 12.6 volts doesn’t mean it good…get your battery load tested and if it’s good I’d do a voltage drop check on the starting system if you have a DVOM before condemning the starter.
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Burning Brakes
Joined: Oct 2016
Posts: 1,209
Likes: 363
From: Massillon Ohio
When it comes to buying batteries these days, your best bet is to look for the best deal and the best warranty. Usually with Advance you can stack discounts online to pick it up in store and get a nice price on the top of the line gold batteries. Stay away from Optima, they went to crap back around 2010 when production went south of the border.