NEW ALTERNATOR FITS 00 01 02 GMC TRUCK YUKON XL 4.8 5.3 6.0 10464405 10480234 334-2481 3342481 321-1749 3211749 334-2481 3342481 100% NEW and Made with the Highest Quality Components Available Full One Year Warranty Computer tested for consistent Quality and unsurpassed reliability Alternator - Voltage: 12V Amperage: 130 Amps Fan: Internal Regulator: Internal Pulley: Serpentine Grooves: 6 Source: Aftermarket