WAI 6489N Starter

Reliable Starter for Select GM and Isuzu Vehicles

The WAI 6489N starter is engineered to provide dependable engine starting performance for a range of Cadillac, Chevrolet, GMC, and Isuzu models. Designed with a permanent magnet gear reduction system, this starter delivers efficient power and consistent operation for vehicles like the Chevrolet Silverado 1500 and GMC Yukon XL 1500.

• 12-volt electrical system compatibility
• Permanent magnet gear reduction design for improved torque
• Delco family starter with 1.5 power rating
• Clockwise (right) starter rotation
• 11-tooth pinion gear for precise engagement
• Pad mounting type for secure installation

Technical Details and Design Features

The WAI 6489N starter features a permanent magnet gear reduction design, which enhances torque output while reducing the overall size and weight of the unit. This design is part of the Delco family, known for its reliable electrical components. With a power rating of 1.5, this starter is suitable for heavy-duty applications found in trucks and SUVs. The clockwise (right) rotation and 11-tooth pinion gear ensure proper meshing with the engine flywheel, while the pad mounting type provides a stable and secure fit.

Compatible Vehicles and Applications

This starter is compatible with a variety of GM and Isuzu vehicles, including:

• Cadillac Escalade
• Chevrolet Avalanche 1500, Silverado 1500, Suburban 1500, Tahoe, Trailblazer EXT
• GMC Sierra 1500, Sierra 2500, Yukon, Yukon XL 1500, Envoy XL
• Isuzu Ascender
• Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500

Common Issues Addressed by the WAI 6489N Starter

• Failure to crank or slow engine turnover
• Intermittent starting problems
• Grinding noises during engine start
• Starter motor overheating or stalling
• Wear-related loss of starter torque

Installation Notes and Tips

Ensure the vehicle battery is fully charged before installation. Verify the starter rotation direction and tooth count match the original unit. The pad mounting type requires proper alignment to avoid starter misfit or damage. It is recommended to inspect the flywheel teeth for wear or damage during replacement.

Quality Assurance and Warranty

WAI starters are manufactured to meet OEM specifications and undergo rigorous testing to ensure durability and performance. The 6489N starter is backed by WAI's quality standards, providing reliable operation for your Cadillac, Chevrolet, GMC, or Isuzu vehicle. Please refer to WAI's warranty policy for specific coverage details.