The Texas Speed 4.3L LV3 DOD Delete Kit removes the factory Displacement on Demand (DOD/AFM) system from the 4.3L EcoTec3 V6 in 2014 to 2021 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. It converts the engine to a conventional valvetrain with a GM OEM non-DOD camshaft, GM/Delphi LS7-style hydraulic roller lifters and new lifter trays, and Texas Speed positions it as the fix for a V6 with failed DOD lifters.
Because the cylinder heads come off to replace the lifters, the kit includes Mahle .039" MLS head gaskets, a GM 2014+ LT1 head bolt kit, exhaust manifold and water pump gaskets, a front crank seal, a balancer bolt, DOD block-off plugs and Permatex Ultra Grey RTV. ECM tuning is required after installation to disable the DOD function, and Texas Speed offers its DOD Delete Programmer as an optional add-on. Professional installation is recommended.
Specifications
- Application: 2014 to 2021 Chevrolet Silverado 1500 and GMC Sierra 1500 with the 4.3L LV3 EcoTec3 V6
- Camshaft: GM OEM LV3 non-DOD camshaft (GM-12721599)
- Lifters: GM/Delphi LS7-style hydraulic roller lifters, set of 12
- Lifter trays: GM LS2 lifter trays, qty 2
- Head gaskets: Mahle .039" MLS, qty 2
- Head bolts: GM 2014+ LT1 head bolt kit for a pair of heads
- Also included: 3 DOD hole plugs, 2 GM exhaust manifold gaskets, 2 TSP 2014+ LT1 water pump gaskets, TSP LS front crank seal, GM LSX harmonic balancer bolt, Permatex Ultra Grey RTV
- Function: Eliminates the factory DOD/AFM system and converts to a conventional non-DOD valvetrain
- Tuning: ECM tuning required after installation to disable DOD/AFM
- Optional add-on: TSP DOD Delete Programmer or Programmer Kit for 2019 to 2021 trucks
Kit Includes
- GM OEM V6 LV3 non-DOD camshaft (GM-12721599)
- GM/Delphi replacement LS7-style lifters, set of 12 (DEL-25341990-12)
- GM LS2 lifter trays, qty 2 (GM-LS5365)
- Mahle .039" MLS head gaskets, qty 2 (MAH-55351)
- GM 2014+ LT1 head bolt kit for a pair of cylinder heads (TSP-LT1HB-KIT)
- DOD hole plugs, qty 3 (TSP-DODPlug)
- GM exhaust manifold gaskets, qty 2 (GM-12657094)
- TSP water pump gaskets, 2014+ LT1, qty 2 (TSP-7430)
- TSP LS front crank seal, replaces GM 12585673 (TSP-FCS)
- GM LSX harmonic balancer bolt (GM-12557840)
- Permatex Ultra Grey rigid high-torque RTV silicone gasket maker (PTX-82194)
Ordering Options
No selection is required to order the kit itself. Texas Speed offers an optional tuner add-on: the TSP DOD Delete Programmer, or the TSP DOD Delete Programmer Kit for 2019 to 2021 GM trucks, or none. Tuning is required after installation, so choose the programmer that matches the truck's model year or arrange tuning separately.
Note: ECM tuning is required after installation to properly disable the factory DOD/AFM function. Professional installation is recommended.
Note: Verify the vehicle, engine, model year and tuning compatibility before installation. Additional components may be required depending on the vehicle and engine configuration.
Vehicle Applications
GMC Sierra 1500
- 2014 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2015 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2016 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2017 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2018 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2019 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2020 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
- 2021 GMC Sierra 1500 — 4.3L LV3 EcoTec3 V6
Chevrolet Silverado 1500
- 2014 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2015 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2016 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2017 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2018 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2019 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2020 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
- 2021 Chevrolet Silverado 1500 — 4.3L LV3 EcoTec3 V6
Vehicle applications reflect the fitment published by Texas Speed & Performance for this part number. Confirm your engine and cylinder head configuration before ordering.
Race Use Only. This product is intended for competition use on vehicles that are never operated on public roads. It is not legal for sale or use on pollution-controlled motor vehicles, and it is not CARB exempt. Installing or using this part on a vehicle driven on public roads may violate the federal Clean Air Act and state emissions laws.
FAQ
What trucks does the Texas Speed 4.3L LV3 DOD Delete Kit fit?
Texas Speed lists the kit for 2014 to 2021 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks equipped with the 4.3L LV3 EcoTec3 V6. It is not for the V8 trucks; Texas Speed sells separate L83 and L86 kits for those.
What is included in the LV3 DOD delete kit?
The kit includes a GM OEM LV3 non-DOD camshaft, a set of 12 GM/Delphi LS7-style lifters, two LS2 lifter trays, two Mahle .039" MLS head gaskets, a 2014+ LT1 head bolt kit, three DOD hole plugs, exhaust manifold and water pump gaskets, a front crank seal, a balancer bolt and Permatex Ultra Grey RTV.
Is tuning required after the LV3 DOD delete?
Yes. The ECM must be tuned to disable the DOD/AFM function once the hardware is removed. Texas Speed offers its DOD Delete Programmer, including a version for 2019 to 2021 trucks, as an optional add-on to this kit.
Does this kit add power or change how the truck drives?
No. The camshaft is a GM OEM-style non-DOD grind, so the kit restores stock-type operation on all six cylinders rather than adding a performance profile. Texas Speed states it is designed to retain factory-like drivability when properly calibrated.
Why delete DOD on a 4.3L EcoTec3 V6?
The DOD lifters are a known failure point. Texas Speed describes this kit as ideal for repairing engines with failed DOD lifters, replacing them with conventional LS7-style lifters and a non-DOD camshaft so the system cannot fail again.
