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Alternator

Tiny
KINSEYJAMES
  • MEMBER
  • 2003 GMC SUBURBAN
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 184,000 MILES
My brand new alternator went out a month ago. It was replaced and now I am experiencing the same symptoms from before lights shutting off while I am driving. Could it be a computer component and is it replaceable?
Sunday, August 21st, 2016 AT 10:46 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It can be a relay or fuse in under hood fuse box or a bad ground on right hand rear of cylinder head or a body module problem which will require scanning by a mechanic to see if it is.
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Sunday, August 21st, 2016 AT 12:44 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I assume the alternator is good if not check fusible links going to it from battery.
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Sunday, August 21st, 2016 AT 12:54 PM
Tiny
KINSEYJAMES
  • MEMBER
  • 25 POSTS
Will a diagnostic computer find the problem? My dad is my mechanic he has one of those? Will I need to put it in a shop?
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Sunday, August 21st, 2016 AT 2:15 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If he has a professional model he can find the body module, if not it wont pick it up and one from an auto parts wont work.
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Sunday, August 21st, 2016 AT 3:18 PM

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