GM 6.6L Duramax LLY LBZ LMM Turbocharger | 848212-9001S | Garrett GT3788VA | Remanufactured

Remanufactured Garrett GT3788VA variable-geometry turbocharger (part number 848212-9001S) for 2004.5–2010 GM 6.6L Duramax diesels with the LLY, LBZ, or LMM engine code (Chevrolet Silverado / GMC Sierra 2500HD/3500HD, Express/Savana). This is a Garrett-remanufactured direct-fit replacement, supplied as a core-charge exchange unit with the VGT control valve and vane position sensor. It restores factory boost and airflow.

Key Features:

• Garrett remanufactured GT3788VA variable-geometry turbocharger, part number 848212-9001S
• Fits 2004.5–2010 GM 6.6L Duramax LLY, LBZ, and LMM engines
• Includes the VGT control valve and VGT vane position sensor
• Revised center housing with three cobalt VGT pins for improved vane actuation and durability
• Direct drop-in replacement

Specifications:

• Base part number: 848212-9001S (Garrett)
• Turbocharger model: Garrett GT3788VA (variable geometry)
• Component type: Turbocharger assembly
• Condition: Remanufactured (core charge applies)
• Engine: GM 6.6L Duramax
• Engine codes: LLY, LBZ, LMM
• Years: 2004.5–2010
• GM references: 97387896, 98011735, 12639460

Compatibility / Fitment:

• Fits 2004.5–2010 GM 6.6L Duramax (Chevrolet Silverado / GMC Sierra 2500HD/3500HD, Express/Savana) — LLY (2004.5–2005), LBZ (2006–2007), LMM (2007.5–2010)
• Does NOT fit the 2011–2016 LML (use 848212-9002S reman) or the 2017+ L5P
• 2004.5–2005 LLY requires a vane position sensor wire harness adapter (771864-0001) and LLY install kit
• Ships without gaskets/seals — installation kit sold separately
• Verify your engine code (8th digit of the VIN) and model year before ordering

Conclusion:

The Garrett 848212-9001S is a remanufactured GT3788VA variable-geometry turbocharger for 2004.5–2010 GM 6.6L Duramax LLY/LBZ/LMM engines, rebuilt to Garrett specification and including the VGT control valve and vane position sensor. It's a direct drop-in supplied as a core-charge exchange unit. Confirm your engine code and note the core return requirement (and the LLY adapter) before ordering.