2011-2016 Chevy/GMC 6.6L Duramax LML GT3788VA Turbocharger | Garrett 848212-9002S Remanufactured
This is the Garrett 848212-9002S, a GT3788VA variable-geometry turbocharger remanufactured by Garrett, the maker of the original. It is the stock replacement for the 2011 to 2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD with the 6.6L Duramax LML. It comes with a new VGT control valve and a new vane position sensor. It replaces GM 12642314, 12642129 and 12677684, which GM now lists as 19434580, and Garrett 800799-0002 and 800799-0003. A refundable core applies.
Low boost, slow spool, a vane position or boost code, oil in the intake tract or shaft play you can feel are the usual reasons an LML turbo comes off. Sticking vanes from soot are common on these trucks, so check the vane control and the exhaust side before you condemn the turbo. The same turbo is offered new as Garrett 848212-5002S, and the two fit the same trucks.
Confirm Fitment Before You Order
The 2011 to 2016 6.6L Duramax came as the LML and the LGH. This turbo is for the LML, which has 8 as the 8th digit of the VIN. The LGH has L there and is found in Express and Savana vans and in cab and chassis trucks. LGH vans take Garrett 848212-9003S instead. On a cab and chassis truck, read the number on the old turbo or send us your VIN and we will confirm the engine. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 848212-9002S |
| Brand | Garrett |
| Condition | Remanufactured |
| Warranty | Manufacturer’s own warranty applies. Call us and we handle the claim. |
| Type | Variable-geometry turbocharger, stock replacement, remanufactured by Garrett |
| Turbo model | Garrett GT3788VA |
| Engine | GM 6.6L Duramax LML (VIN 8th digit 8) |
| Model years | 2011 to 2016 |
| Trucks | Chevrolet Silverado and GMC Sierra 2500HD and 3500HD |
| Included | New VGT control valve and new vane position sensor |
| Core charge | Refundable in full when we receive your rebuildable core |
| Shipping weight | 54 lb |
Fits / Applications
- 2011 to 2016 Chevrolet Silverado 2500HD and 3500HD, 6.6L Duramax LML
- 2011 to 2016 GMC Sierra 2500HD and 3500HD, 6.6L Duramax LML
- LML engines only (VIN 8th digit 8). For an LGH van or cab and chassis truck (VIN 8th digit L), send us the VIN first.
Find out why the old turbo failed before this one goes on. Fit a new oil feed and check the drain, change the engine oil and filter, clean the intake tract and charge air cooler of oil and debris, and prime the turbo with clean oil before first start. Use a new gasket and seal kit: the install kit for this engine is Alliant Power AP0165, a separate part.
Part Numbers & Cross Reference
Garrett 848212-9002S · GM 12642314 · GM 12642129 · GM 12677684 · GM current number 19434580 · GM 12635167 · GM 12632248 · GM 12634300 · GM 12637721 · GM 12643546 · GM remanufactured turbo 19419248 · Garrett earlier number 800799-0001 · Garrett earlier number 800799-0002 · Garrett earlier number 800799-0003 · Garrett earlier number 792129-0001 · Garrett earlier number 792129-0002 · Garrett earlier number 792129-0003 · Garrett earlier number 792129-0004 · Garrett new version 848212-5002S
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
Will the 848212-9002S fit my 2011 to 2016 Duramax?
It fits the 2011 to 2016 Silverado and Sierra 2500HD and 3500HD with the 6.6L LML, which has 8 as the 8th digit of the VIN. It is not for the LGH engine used in Express and Savana vans, which takes 848212-9003S. Call 530-668-0818 with your VIN if you are not sure.
Who remanufactured it, and is there a core?
Garrett, the maker of the original turbo. A refundable core applies and comes back when we receive your old turbo.
Does it come with the vane position sensor?
Yes. It comes with a new VGT control valve and a new vane position sensor.
What numbers does it replace?
GM 12642314, 12642129, 12677684 and 19434580, and Garrett 800799-0001, 800799-0002 and 800799-0003. The new version of the same turbo is Garrett 848212-5002S.
Related Parts
- 2011-2016 Chevy/GMC 6.6L Duramax LML GT3788VA Turbocharger | Garrett 848212-5002S New
- 2011-2016 Chevy/GMC 6.6L Duramax LML Fuel Injector | Bosch 0986435410 | Genuine Bosch Remanufactured
- 2011-2016 Chevy/GMC 6.6L Duramax LML Right (Passenger) Fuel Rail | Bosch F00RL00591 New
- 2011-2016 Chevy/GMC 6.6L Duramax LML & LGH DEF Pump (Diesel Exhaust Fluid) | Bosch F01C600200 New
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.
UPS Ground anywhere in the lower 48. A refundable core deposit is added at checkout and refunded in full when we receive your rebuildable core. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax and the refundable core charge are additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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