Alternator Replacement

Tiny
SARAHMSI
  • MEMBER
  • 2005 GMC ENVOY
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 202,000 MILES
How do I find the amps of my alternator on a 2005 GMC Envoy. I need to change the alternator
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Monday, June 27th, 2011 AT 4:37 PM

6 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Here is a guide that will walk you through the steps with instructions and diagrams for the job on your car below.

https://www.2carpros.com/articles/how-to-replace-an-alternator

Alternator - 19151920 - $461.98 and can get a rebuilt one from Amazon for 126.00 AC delco

https://www.amazon.com/gp/product/B002QVHN7O/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=2carprcom-20&creative=9325&linkCode=as2&creativeASIN=B002QVHN7O&linkId=89cb8cdba7ce7fcd84ba105449e2d9c3

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, June 27th, 2011 AT 8:33 PM
Tiny
KACHMEZ28
  • MEMBER
  • 1 POST
  • 2003 GMC ENVOY
Thanks! I got the part and BAM all set, I love this site.
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Monday, April 29th, 2019 AT 2:37 PM (Merged)
Tiny
CFS3
  • MEMBER
  • 1 POST
  • 2004 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 60,000 MILES
How to change an alternator in envoy?
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Monday, April 29th, 2019 AT 2:37 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,921 POSTS
Hi:

Here is a guide to help walk you through the steps with diagrams below to show you your car

https://www.2carpros.com/articles/how-to-replace-an-alternator

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, April 29th, 2019 AT 2:37 PM (Merged)
Tiny
FINEWINE14U
  • MEMBER
  • 1 POST
  • 2002 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
My Envoy is making a high pitched whine sound when the gas is stepped on. One shop said it is the alternator making the sound. Another said it could be the alternator failing because the battery is failing. The battery charge indicator on the dash seems to hunt somewhere between the normal 1/2 point, and often goes down to the 1/4th level. With the lights off, heater off, the charge indicates normal, but quickly but slightly falls when I get off the gas. With the lights on, or heater on high, the charge indicator will not raise to the normal level no matter how much gas I give it. I have never heard an alternator make noise. Do they? I have replaced the battery once in this high mileage vehicle, which indicated five years ago it was good for 3 years. I have had the belts replaced, the pulleys replaced, but I have never had the alternator replaced. Alternator, battery, or both? Or Not Either?
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Monday, April 29th, 2019 AT 2:37 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,606 POSTS
If you have had the battery for 5 years get rid of it an get another one. The alternator is probably the bearing making noise and is going bad as well.
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Monday, April 29th, 2019 AT 2:37 PM (Merged)

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