Alternator

2006 GMC SIERRA
240,000 MILES
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JOJO853
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Is the alternator for a 4.3 the same as 5.7. what years will interchange on a 2006 GMC Sierra.
Jan 24, 2019 at 2:17 AM
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HARRY P
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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.
Jan 24, 2019 at 4:14 AM