Remy 12631 Alternator

Remanufactured Alternator for GM Vans

Remy Premium Remanufactured Part Number 12631 is a 12-volt alternator built for charging-system replacement on select Chevrolet, Pontiac, Buick, and Saturn vehicles. It delivers 125 amps, uses an internal fan and internal voltage regulator, and includes the pulley for a direct-fit service replacement.

Key Features

• 125-amp output for OE-style charging performance
• 12-volt remanufactured alternator
• Internal fan and internal voltage regulator
• Clockwise rotation
• Pulley included
• OE manufacturer reference: Valeo
• Cross-reference part numbers include 15201679 and TG13S012

Product Details

Remy Premium Remanufactured 12631 is built for vehicles that use a Valeo-style charging system and require a 125 amp alternator with internal regulation. This unit is a practical replacement for charging-system service on the Chevrolet Uplander, Pontiac Montana, Buick Terraza, and Saturn Relay. It is also listed under interchange numbers 15201679, 15215547, 15251756, 15784560, 15863715, TG13S012, TG13S017, TG13S020, and TG13S029.

Compatible applications include Fits 2007-2009 Chevrolet Uplander, N/A; Fits 2008-2009 Pontiac Montana, N/A; Fits 2005-2007 Buick Terraza, N/A; Fits 2005-2007 Pontiac Montana, N/A; Fits 2005-2007 Saturn Relay, N/A; and Fits 2005-2006 Chevrolet Uplander, N/A. Search terms such as 2007-2009 Chevrolet Uplander alternator 125 amp and 2005-2007 Saturn Relay remanufactured alternator align with this fitment.

Common Replacement Reasons

• Battery warning light or charging-system fault
• Low system voltage during driving or idle
• Dim lights or electrical accessories operating inconsistently
• Alternator bearing, regulator, or internal component wear
• Need for a direct replacement on a Valeo-based charging system

Installation Notes and Tips

Verify pulley style, rotation direction, voltage, amperage rating, and connector match before installation. Confirm the vehicle’s original alternator specification against the OE number and interchange references before removal. After installation, check charging voltage and inspect belt condition, tension, and electrical connections to confirm proper operation.

Quality Assurance

Remy Premium Remanufactured alternators are remanufactured to restore charging-system function with OE-style specifications and application matching for the listed vehicles. This part is built as a remanufactured replacement for service use on the specified Chevrolet, Pontiac, Buick, and Saturn models.