Remy 22021 Alternator

Reliable Alternator for Cadillac, Chevrolet, GMC, and Hummer Vehicles

The Remy Premium Remanufactured Alternator 22021 is designed to restore charging system performance in select GM vehicles. Engineered with a 145-amp rating and internal voltage regulator, this alternator supports the electrical demands of models like the Chevrolet Silverado and Cadillac Escalade.

• 145 Amperage Rating for consistent power output
• Internal fan type for efficient cooling
• Remanufactured to meet OE standards
• Includes pulley for direct replacement
• Clockwise rotation direction
• 12 Volt system compatibility
• Internal voltage regulator for simplified installation
• OE Manufacturer: Delco/Delphi

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy offers alternators that have been carefully rebuilt to meet original equipment specifications. This ensures reliable performance and durability while providing a cost-effective alternative to new parts. The 22021 alternator benefits from this process, delivering dependable operation for your vehicle’s charging system.

Product Details and Specifications

This Remy alternator features a 145-amp output suitable for heavy-duty electrical loads found in trucks and SUVs. The internal fan design helps maintain optimal operating temperatures, while the internal voltage regulator simplifies installation by eliminating the need for external components. The included pulley matches original equipment, ensuring proper fit and function. Designed for clockwise rotation, this alternator is compatible with 12-volt electrical systems commonly found in GM vehicles.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche, Colorado, Silverado 1500, 2500 HD, 3500 HD, Suburban 1500, 2500, Tahoe
• GMC Canyon, Sierra 1500, 2500 HD, 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500
• Hummer H3, H3T
• Express 1500, Savana 1500

Common Issues This Alternator Addresses

• Battery not charging or slow charging
• Dimming or flickering headlights and interior lights
• Electrical system warning lights on the dashboard
• Unusual noises from the alternator pulley or fan
• Intermittent power loss or vehicle stalling

Installation Notes and Tips

Before installation, verify the part number 22021 matches your vehicle’s requirements. Disconnect the battery to prevent electrical shorts. The included pulley allows for direct replacement without additional parts. Ensure the alternator is installed with clockwise rotation orientation. After installation, check the charging voltage to confirm proper operation.

Quality Assurance and Warranty

Remy’s Premium Remanufactured alternators undergo rigorous testing to meet or exceed original equipment standards. This alternator is built with quality components, including an internal voltage regulator and fan, to ensure reliable performance. Warranty coverage details should be confirmed with the parts provider or manufacturer.