Walker 928-4055-6 Ignition Coil Set

Walker Coil Set 928-4055-6 Overview

Walker 928-4055-6 is an ignition coil set for select GM and Isuzu SUV applications. It is built for direct replacement use on vehicles such as the Chevrolet Trailblazer, GMC Envoy, and Buick Rainier when diagnosing ignition misfire or weak spark concerns.

The Walker Coil Set line focuses on ignition service parts for common repair needs, giving technicians a straightforward replacement option for engine performance issues tied to coil failure. Part number 928-4055-6 is listed for multiple 2002-2008 applications, including the Chevrolet Trailblazer and GMC Envoy platform.

Key Features

• Ignition coil set for select GM and Isuzu applications
• Fits 2002-2005 Chevrolet Trailblazer, N/A
• Fits 2002-2005 GMC Envoy, N/A
• Fits 2004-2005 Buick Rainier, N/A
• Fits 2005 Saab 9-7x, N/A
• Walker part number 928-4055-6 for catalog lookup and ordering

Vehicle Fitment

• Fits 2008 Isuzu Ascender, N/A
• Fits 2004-2005 Isuzu Ascender, N/A
• Fits 2004-2005 Buick Rainier, N/A
• Fits 2002-2005 Chevrolet Trailblazer, N/A
• Fits 2002-2005 Chevrolet Trailblazer EXT, N/A
• Fits 2002-2005 GMC Envoy, N/A
• Fits 2002-2005 GMC Envoy XL, N/A
• Fits 2004-2005 GMC Envoy XUV, N/A
• Fits 2005 Saab 9-7x, N/A
• Fits 2002-2004 Oldsmobile Bravada, N/A
• Fits 2003 Isuzu Ascender, N/A, Incl.Boot and Spring

Common Repair Uses

• Engine misfire diagnosis tied to ignition coil failure
• Rough idle caused by weak or inconsistent spark output
• Hard starting related to degraded ignition performance
• Check engine light conditions associated with coil circuit faults
• Loss of power under load on Trailblazer, Envoy, or Rainier applications

Installation Notes

Verify year, make, model, and engine application before installation. Confirm the connector style and mounting location match the original part, and inspect related ignition components such as spark plugs and boots during service. For the 2003 Isuzu Ascender listing, the notes specify boot and spring inclusion for that application.

Quality Assurance

Walker ignition components are cataloged for service replacement across multiple OE-style applications. Part number 928-4055-6 is identified for direct-fit use on listed Chevrolet, GMC, Buick, Isuzu, Saab, and Oldsmobile models.