NEW ALTERNATOR FITS 00 01 02 GMC YUKON 4.8 5.3 XL 6.0 V8 10464438 91602 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: 105 Amps Fan: Internal Regulator: Internal Pulley: Serpentine Grooves: 6 Source: Aftermarket