Alternator

Tiny
JOJO853
  • MEMBER
  • 2006 GMC SIERRA
  • 240,000 MILES
Is the alternator for a 4.3 the same as 5.7. What years will interchange on a 2006 GMC Sierra.
Thursday, January 24th, 2019 AT 2:17 AM

1 Reply

Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
I don't show a 5.7L engine available for the 2006 Sierra in any trim. I do see a 4.3 V6, a 4.8 V8, and a 5.3 V8, and they use the same alternator from 2005 to 2007, from what I can tell. I would definitely call a dealership to confirm fit before buying or ordering though, as sometimes these catalogs can be inaccurate.

I'd be glad to recheck if you can get me the VIN number to your truck. Thanks.

Harry.
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Thursday, January 24th, 2019 AT 4:14 AM

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