MPA Electrical 6489SN Starter Motor

Starter for GM 4.8L, 5.3L, and 6.0L Applications

MPA Electrical 6489SN is a 12-volt starter built with a permanent magnet gear reduction design and a 1.5 kW rating. It is a Delco-style replacement starter for select Chevrolet, GMC, Cadillac, and Isuzu trucks and SUVs from 2000-2003, including Silverado, Sierra, Tahoe, Yukon, and Express/Savana van applications.

Key Features

• Permanent magnet gear reduction starter design
• 1.5 kW output for 12-volt starting systems
• Clockwise rotation
• 11-tooth pinion
• Delco manufacturer style
• MPA Electrical part number 6489SN

Detailed Description

MPA Electrical 6489SN is a replacement starter for GM vehicles that use a Delco-style, clockwise-rotation unit with an 11-tooth drive. It is listed for 2000-2003 Chevrolet Silverado 1500 and Silverado 2500, 2001-2003 Chevrolet Silverado 1500, Tahoe, and 2001-2002 Suburban 1500, plus 2002 Avalanche 1500 and 2003 Express 1500, Express 2500, and Express 3500. This starter also fits 2001-2003 GMC Sierra 1500, Yukon, Yukon XL 1500, and 2003 Savana 1500, Savana 2500, and Savana 3500, along with 2002 Cadillac Escalade, 2003 Chevrolet Trailblazer EXT, 2003 GMC Envoy XL, and 2003 Isuzu Ascender. The part number 6489SN is also a useful reference when matching the correct starter for these GM platforms.

This part cross-references AC Delco-style starter applications for the same GM fitments.

What It Helps Fix

• Slow or weak cranking during engine start
• No-crank conditions caused by starter failure
• Intermittent starting after key engagement
• Grinding or improper pinion engagement from a worn starter drive
• Starting issues on GM trucks, vans, and SUVs with the listed Delco-style setup

Installation Notes and Tips

• Verify the vehicle uses the correct 2nd design starter where noted, especially 2000-2003 Chevrolet Tahoe and GMC Yukon applications that use two long bolts (12561387).
• Confirm 12-volt system requirements, clockwise rotation, 11-tooth pinion count, and Delco-style configuration before installation.
• Match the starter to the exact year, make, and model listed for Silverado, Sierra, Tahoe, Yukon, Express, and Savana applications.
• Inspect battery condition, cable connections, and charging system output when replacing a starter.

Quality Assurance

MPA Electrical supplies this starter as a new replacement component under the New product line designation. The 6489SN is built to match the listed electrical and drive specifications for the confirmed GM applications.