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03 GMC Savana want a spare drive belt but what alternator?

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Old Apr 12, 2026 | 10:25 PM
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Default 03 GMC Savana want a spare drive belt but what alternator?

03 GMC Savana conversion van 5.3 engine.want a spare drive belt but what alternator?
105amp or 145amp? I think the 145amp has a larger case which makes sense to have a longer drive belt. can I decode the vin# to find which alt. my van has?
or can I look at aternator for IIRC this era van was a 244 or something for the 145amp. or can I mearsure the pulley. I'd prefer to not remove the belt just to find the correct length. please advise an thanks
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Old Apr 13, 2026 | 12:42 PM
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Look for the RPO code sticker in the door frame (passenger side I think)
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