Alternator size 2000 Silverado

jmas16 · July 21, 2015

I am going to get a serpentine belt component kit. There are two offered on a popular website, one for a 105 amp alternator and the other for a 130 amp. How do I tell the difference? The truck is a totally stock 2000 4WD extended cab (3 door) Silverado 1500 with 5.3 V8, 6.6' bed, auto trans, towing package, and a/c. I am the original owner and the alternator has never been replaced. Thanks.

Chris · July 21, 2015

Stock is the 105

145 is stock on 05 and newer. 130 was the HD i believe but will go on without issue. It just needs a slightly longer belt i believe

00Silverado4x4 · July 27, 2015

Should be 105 amp as others have said.

jmas16 · July 28, 2015

Thanks. Already received the kit, but haven't installed it yet. I'll squawk back if it doesn't fit due to the alternator.

MMC · July 21, 2015

I would bet it's a 105, but it should be stamped on the alternator, at least it was on my 2002.

jmas16 · July 22, 2015

Thanks. I couldn't find any marking> Maybe it is underneath the alt, but I haven't taken it off. As you said it is probably a 105 amp. Worst case I'll just have to return the parts. Thanks again.