Search by number: 2002 GMC Full Size Pickups 6.5L 8 Cyl Diesel Alternator ProAmp 8206-5 $100.00 each OPTIONS: 105 Amps; Oval Plug; Single or Dual Alt (Same unit) ProAmpN 8206-5N $138.00 each OPTIONS: 105 Amps; Oval Plug; Single or Dual Alt (Same unit) Why is there more than one unit for my car? Look at the TECH SPECS when more than one unit is shown for your car. AMPS (ELECTRIC CAPACITY): must match you vehicle electric requirements. *** Call us if you are looking to increase your unit capacity! OE ALTERNATOR MANUFACTURER: It is recommended to match the Make of your alternator