Service Charging System?
Thread Starter
Race Director
Joined: Apr 2007
Posts: 16,025
Likes: 1,656
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021
Service Charging System?
There was a ringing sound coming from the engine when I came back from work today. Went for a spin in the evening and 10 minutes later got a "Service Charging System" message but it went away without me resetting it. Now there is no ringing sound coming from the engine. The alternator's voltage looks good. Any thoughts before I let the dealer tear my car apart? Only have 1300 miles on it and 3 months old.
Thread Starter
Race Director
Joined: Apr 2007
Posts: 16,025
Likes: 1,656
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Thread Starter
Race Director
Joined: Apr 2007
Posts: 16,025
Likes: 1,656
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021
But I like to rev up my engine, that too suddenly - that's what I bought the car for. If there is a GM Notice about this, did they come up with a fix for it?
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Instructor
Joined: Feb 2001
Posts: 199
Likes: 4
From: Lake Worth Florida
I had the same problem and almost went with a new alternator when , at the last moment, my tuner told me tha he heard of a GM bulletin about a falty harmonic balancer that starts to vibrate exessively especially after a cam swap. Had it replaced under warranty and the problem has been solved.