2004-2005 Duramax 6.6L LLY Glow Plug Control Module 8973796350

This is a professionally remanufactured OEM Glow Plug Control Module (GPCM) for Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax LLY diesel engine. Every module is thoroughly inspected, tested, and rebuilt to meet or exceed original factory specifications for reliable cold-start performance and long-term durability.

The Glow Plug Control Module plays a critical role in diesel engine operation by controlling glow plug activation during startup. A failed GPCM can lead to hard starts, extended crank times, glow plug faults, check engine lights, and poor cold-weather performance.

At Automobile Computer Solutions (ACS), each unit undergoes extensive quality control testing to ensure dependable operation before shipment.

• Hard starting or no-start conditions
• Extended crank time during cold starts
• Glow plug warning light illuminated
• Check Engine Light (CEL)
• Glow plug circuit fault codes
• Poor cold-weather engine performance
• Intermittent starting issues

• Genuine OEM unit professionally remanufactured
• Fully tested for functionality and reliability
• Direct replacement for the original module
• Plug & Play installation
• No programming or additional setup required
• Lifetime Warranty included

• Chevrolet Silverado 2500HD 6.6L Duramax LLY
• Chevrolet Silverado 3500HD 6.6L Duramax LLY
• GMC Sierra 2500HD 6.6L Duramax LLY
• GMC Sierra 3500HD 6.6L Duramax LLY

Every Glow Plug Control Module is tested prior to shipment to ensure proper communication, power output, and glow plug control functionality. Buy with confidence knowing your module is backed by the ACS Lifetime Warranty and dedicated customer support team.

Need help confirming compatibility? Contact ACS with your VIN or part number before ordering