GMT900 Alternator - 2500HD / 3500HD — Chevrolet Silverado / GMC Sierra Open image to view full size. Confirm details against the part you need.

GMT900 Alternator - 2500HD / 3500HD — Chevrolet Silverado / GMC Sierra

$229.99
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Part details & compatibility

Replacement alternator for GMT900 heavy-duty applications.

Fitment: GM catalogs multiple outputs including 120A and 145A units. Verify engine, diesel/gas configuration, RPO, and factory output.

Before ordering: Electrical parts can vary by engine, RPO, connector, service number, body style, and factory options. Confirm the original component before ordering.

Part identification: This is a catalog reference. Confirm the manufacturer part number and vehicle configuration before selecting this part.

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