Remy 12559 Alternator

Remanufactured Alternator for GM Minivans

Remy 12559 is a premium remanufactured 12-volt alternator built for charging-system replacement on select Pontiac Montana and Oldsmobile Silhouette applications. With a 105 amp amperage rating, internal voltage regulation, and an included pulley, it matches the core electrical and mounting requirements for the listed vehicles.

Key Features

• 105 amp output for standard charging-system service
• 12-volt alternator with internal voltage regulator
• Internal fan design for integrated cooling
• Clockwise rotation
• Pulley included
• Remanufactured to Remy Premium Remanufactured standards
• OE manufacturer reference: Valeo

Product Details

Remy 12559 is a remanufactured alternator for 2002-2005 Pontiac Montana and 2002-2004 Oldsmobile Silhouette models. It is built around a 105 amp output and internal regulation, making it a direct replacement choice for vehicles that use a Valeo-style charging system. This part cross-references GM applications such as 10317647 and 10440635 for the same application. The Remy Premium Remanufactured line focuses on restored electrical components that meet the fit and function expected for replacement service.

Vehicle Fitment

• Fits 2002-2005 Pontiac Montana, N/A. Standard 105 Amp alternator: suitable for various applications.; Premium Remanufactured
• Fits 2002-2004 Oldsmobile Silhouette, N/A. Standard 105 Amp alternator: suitable for various applications.; Premium Remanufactured

What It Helps Fix

• Battery warning light caused by alternator output loss
• Low charging voltage during driving or idle
• Dim lights and electrical instability from weak charging performance
• Starting issues related to insufficient battery recharge
• Charging-system noise or failure tied to worn internal components

Installation Notes and Tips

Verify pulley style, rotation direction, amperage rating, and connector match before installation. Confirm the vehicle uses the listed 12-volt, internal-regulator configuration and compare the original unit against Remy 12559 before removal. After installation, check charging voltage and inspect belt condition, tension, and electrical connections.

Quality Assurance

Remy Premium Remanufactured components are remanufactured electrical parts built for replacement service in OE-style applications. OE manufacturer reference: Valeo.