Glow Plug, LM2 | 2020 - 2022

ACDelco 73G / GM 24000504 Glow Plug | 2020–2022 3.0L LM2 Duramax

Maintain reliable cold-weather starting with the ACDelco 73G Glow Plug for 2020–2022 GM 3.0L LM2 Duramax engines. This genuine GM replacement glow plug is designed to provide the heat needed for proper diesel combustion during cold starts, helping reduce hard-start conditions caused by worn or failed glow plugs.

Engineered and tested to GM original equipment standards, this direct-fit replacement provides dependable performance and factory-quality compatibility.

Key Features

• Genuine GM / ACDelco replacement glow plug
• Direct-fit OEM replacement
• Helps improve cold-weather starting performance
• Designed and tested to GM original equipment standards
• Sold individually; six glow plugs required per engine

Fitment

2020–2022 Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 3.0L LM2 Duramax engine.

Important Fitment & Installation Notes

• Glow plug design varies by vehicle production date and electrical architecture.
• Confirm first-design versus second-design compatibility before installation.
• Clean the glow plug bore using the appropriate tool before installing a replacement ceramic glow plug.
• Not interchangeable with glow plugs used in LZ0 Duramax applications.