Description
Has the Displacement on Demand (DOD) or Active Fuel Management (AFM) system started ticking, sticking, or outright failed on your 2007–2013 GM 5.3L truck or SUV? Top-end valvetrain ticking, misfires, and collapsed lifters are classic failure points on high-mileage Gen IV engines. This SDPC direct-replacement repair kit restores factory valvetrain geometry and repairs AFM lifter failures properly without requiring aftermarket PCM recalibration, custom tuning, or emissions-defeat software. Engineered specifically for Gen IV 5.3L LS platforms (LC9, LH6, LY5, LMG), this package provides genuine factory components to repair collapsed lifters and damaged camshaft lobes right the first time.
Tech Tip: We strongly recommend replacing the Valve Lifter Oil Manifold (VLOM) valley cover during this service. Contaminated solenoids, degraded internal gaskets, and clogged micro-screens within the factory VLOM are the leading causes of low oil pressure delivery to the AFM towers, which triggers lifter collapse. You can add a brand-new updated GM VLOM assembly directly via the drop-down menu.
GM Gen IV 5.3L DOD / AFM Direct Repair Kit (2007–2013)
Platform: Chevrolet Silverado 1500 / Suburban / Tahoe & GMC Sierra 1500 / Yukon 5.3L Gen IV LS V8
| Component | Included Specification / Option |
|---|---|
| Engine Platform | GM Gen IV 5.3L LS V8 (2007–2013: LC9, LH6, LY5, LMG) |
| Repair Type | Direct OEM Factory AFM / DOD Repair (Retains Factory AFM Function) |
| Camshaft | Genuine GM Factory-Spec Replacement 5.3L AFM Camshaft |
| Active Fuel Management Lifters | (8) Genuine GM Active / De-Popping AFM Roller Lifters |
| Lifter Guides / Retainers | Set of (4) Genuine GM Lifter Guide Trays |
| Cylinder Head Gaskets | Genuine GM Multi-Layer Steel (MLS) Head Gaskets (Pair) |
| Cylinder Head Fasteners | Genuine GM Factory Torque-To-Yield (TTY) Head Bolt Kit |
| Exhaust Manifold Gaskets | Multi-Layer Steel (MLS) Exhaust Manifold Gaskets (Pair) |
| VLOM Assembly (Optional Add-On) | Updated GM Valve Lifter Oil Manifold (Valley Cover with Solenoids & Filter) |
| PCM Tuning Required | No PCM Calibration Required (Retains 100% Stock Calibration) |
Key Kit Features & Service Highlights:
- Factory Restoration: Restores original engine operation, cylinder deactivation fuel economy, and factory drivability without needing diagnostic trouble code overrides or handheld tuners.
- Matched Camshaft & Lifters: Replacing active lifters alongside a brand-new factory AFM camshaft eliminates premature failure caused by scored, flat, or heat-checked original cam lobes.
- Factory-Grade Sealing: Ships with genuine GM MLS cylinder head gaskets and multi-layer exhaust manifold gaskets to guarantee durable, leak-free reassembly.
- Single-Use Fasteners Included: Complete with genuine GM factory torque-to-yield head bolts to ensure proper clamping load and deck seal under thermal cycling.
- New Lifter Guides: Brand-new guide retainers ensure lifters stay aligned on the camshaft lobes, preventing catastrophic lifter rotation in the bore.
- Recommended VLOM Replacement: Contaminated or sticking solenoids in the original valley cover are the leading root cause of recurring lifter collapse—installing an updated VLOM ensures proper oil pressure delivery to newly installed components.
Details
Shipping Information
- H12.00"
