Cold Air Intake for GMC Chevy Cadillac (1999-2006) Escalade Avalanche Suburban Silverado Sierra Yukon 4.8L 5.3L 6.0L

Name: Cold Air Intake for GMC Chevy Cadillac (1999-2006) Escalade Avalanche Suburban Silverado Sierra Yukon 4.8L 5.3L 6.0L
Brand: VelocityMax
SKU: DS-372159077344-SUVUNIV
Price: 104.95 USD
Availability: InStock

$104.95

$104.95 ~~$149.99~~

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The General Motors GMT800 platform is arguably the last line of truly "overbuilt" trucks, but the factory induction system on the Gen III Vortec V8s leaves a lot of potential on the table. Your stock airbox was designed to be quiet, not efficient. It forces air through a restrictive paper filter and a turbulent, accordion-style plastic tube that strangles airflow right before the throttle body. If you want to wake up your LS-based truck engine and feel the torque you actually paid for, you need to open up the airway.

High-Flow Performance Air Intake Upgrade for Chevrolet/GMC Trucks & SUVs (GMT800 Gen III Vortec)

This isn't just a shiny pipe; it's a correction of a factory inefficiency. The 4.8L, 5.3L, and 6.0L Vortec engines are legendary for their reliability, but they are notorious for feeling "lazy" off the line in stock form. This sluggishness is largely due to the OEM intake tract, which prioritizes silencing intake noise over air velocity. By replacing that baffled plastic maze with our T304 Lightweight Aluminum piping, you create a smooth, direct path for air to enter the intake manifold. This laminar airflow allows the engine to breathe easier, resulting in significantly sharper throttle response—crucial when you are towing or merging onto the highway.

We engineered this kit using T304 Aluminum for a specific reason: heat dissipation and durability. Unlike factory plastic that can become brittle and crack over years of heat cycling, or steel that retains heat (soaking your intake charge), aluminum sheds heat quickly. The result is a cooler, denser air charge entering the engine. Combined with the high-flow conical filter, this system maximizes volume. You aren't just getting more air; you are getting cleaner, faster air.

Beyond the dyno-proven gains of up to 10% in horsepower and torque, this intake changes the character of the truck. Under normal cruising, it remains civilized. However, when you mash the throttle, that muffled vacuum cleaner sound is replaced by the deep, aggressive induction roar that only a pushrod V8 can make. It restores the mechanical soul of the truck without being obnoxious.

Why You Need This Upgrade

Immediate Throttle Response: Eliminates the "lag" caused by the turbulent stock accordion tube, making the truck feel lighter on its feet.
Proven Power Gains: Dyno-tested increases of up to 10% in HP and Torque by optimizing air density and velocity.
T304 Aluminum Construction: Lightweight and corrosion-resistant material that dissipates engine bay heat better than stock plastic.
The "Vortec" Growl: Unlocks the deep, throatier engine tone that is suppressed by the factory resonator box.
Lifetime Maintenance: The included high-flow filter is washable and reusable, saving you money on disposable paper filters every service interval.
Efficiency Boost: Improved airflow allows the engine to work less to get the oxygen it needs, potentially improving fuel economy during cruising.

Fitment	1999-2006 GMT800 Trucks & SUVs
Engine Code	Gen III Vortec V8 (LR4, LM7, L59, LQ4, LQ9)
Installation	Easy (Under 60 Minutes)
Material	T304 Lightweight Aluminum

Installation Notes

Installation is straightforward and requires only basic hand tools (screwdriver, socket set). You will need to remove the factory airbox assembly. Crucial Step: After installation, disconnect your negative battery terminal for at least 15 minutes. This forces the ECU (Engine Control Unit) to clear old fuel trim data and "re-learn" the new, higher airflow parameters immediately, ensuring you get smooth idling and maximum power right away.

Replaces These OEM Applications

2002-2006 Cadillac Escalade with 5.3L/6.0L V8 Engine
2002-2006 Chevrolet Avalanche 1500 with 5.3L V8 Engine
2000-2006 Chevrolet Suburban 1500/2500 with 5.3L/6.0L V8 Engine
2000-2006 Chevrolet Tahoe with 4.8L/5.3L V8 Engine
1999-2006 Chevrolet Silverado 1500 / 1500 HD with 4.8L/5.3L/6.0L Engine
1999-2006 Chevrolet Silverado 2500 / 2500 HD with 5.3L/6.0L V8 Engine
2001-2006 Chevrolet Silverado 3500 with 6.0L V8 Engine
2003-2006 Chevrolet Silverado SS with 6.0L V8 Engine
1999-2006 GMC Sierra 1500 / 1500 HD with 4.8L/5.3L/6.0L V8 Engine
1999-2006 GMC Sierra 2500 / 2500 HD with 5.3L/6.0L V8 Engine
2001-2006 GMC Sierra 3500 with 6.0L V8 Engine
2002-2006 GMC Sierra Denali with 6.0L V8 Engine
2000-2006 GMC Yukon with 4.8L/5.3L V8 Engine
2001-2006 GMC Yukon Denali with 6.0L V8 Engine
2001-2006 GMC Yukon Denali XL with 6.0L V8 Engine
2002-2006 GMC Yukon Denali XL 1500 with 5.3L V8 Engine
2002-2006 GMC Yukon Denali XL 2500 with 6.0L V8 Engine

Your GMT800 is built to last forever—make sure it has the air it needs to run at its peak. Upgrade your intake today and feel the difference in every pedal press.

Fitment

Make	CadillacChevroletGMC
Engine Size	4.8L 5.3L 6.0L
Year	1999 2000 2001 2002 2003 2004 2005 2006

Installation & Tools

The Wrench Time

Estimated Time: 45-60 Minutes
Difficulty: 2/10 - Straightforward bolt-on upgrade for beginner DIYers.

Tools You Will Need

10mm socket & ratchet: For battery terminal and factory tray mounting hardware.
5/16" socket or flathead screwdriver: For intake coupler worm-gear clamps.
T15/T20 Torx driver: For Mass Air Flow (MAF) sensor retaining screws (if transferring bare sensor element).
Trim panel popper: To safely release factory wiring harness retainers from the shroud.
Clean microfiber cloth: For wiping down the throttle body inlet mating surface.

Mechanic’s Pro Tip (The "Gotcha"):
On GMT800 trucks and SUVs (1999-2006 4.8L, 5.3L, and 6.0L Vortec platforms), the gray Connector Position Assurance (CPA) lock on the MAF harness is extremely brittle from years of underhood heat cycles. Slide the gray safety tab back gently with your thumbnail before pressing the release lever. Never pry it aggressively with a screwdriver, or the locking tab will snap off, causing intermittent MAF disconnects and lean codes (P0171/P0174). Additionally, ensure the directional airflow arrow on the MAF housing points straight toward the throttle body upon reassembly.

Phase 1: Removing the Factory Part

Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench to reset fuel trims and prevent electrical shorting or check engine lights during install on your 1999-2006 Cadillac Chevrolet GMC Escalade Avalanche Silverado Suburban Sierra Yukon 4.8L 5.3L 6.0L.
Disconnect the MAF Sensor: Slide the gray locking tab back on the Delphi MAF connector, depress the release tab, and gently pull the plug free. Use a trim panel popper to unclip the MAF wiring loom from the factory intake tube.
Remove the Factory Intake Resonator Tube: Using a 5/16" nut driver or flathead screwdriver, loosen the worm-gear clamp at the throttle body and the clamp connecting the resonator tube to the factory MAF housing. Disconnect the radiator support bracket clamp (if equipped) and pull the massive factory plastic baffle tube out of the engine bay.
Remove the OEM Airbox Assembly: The factory lower airbox is secured via push-in rubber grommets. Firmly grasp the lower airbox housing and pull straight upward to release the bottom locating pins from the mounting tray. Unclamp and separate the OEM MAF sensor from the airbox lid using a 5/16" nut driver and set the sensor aside on a clean, soft surface.
Remove the Factory Airbox Tray (If Required): If your aftermarket heat shield uses direct-to-frame mounting, use a 10mm socket to remove the four factory mounting bolts securing the stamped steel airbox tray to the inner fender well.

Phase 2: Installing the Cold Air Intake

Install the Heat Shield: Position the new intake heat shield assembly over the factory airbox mounting location. Secure it using the supplied hardware or the factory tray mounting points with your 10mm socket and ratchet. Install the protective rubber edge-trim seal along the top perimeter of the shield to seal against the hood.
Prepare and Transfer the MAF Sensor: Inspect the delicate sensing wires inside the MAF sensor; do not touch them with your fingers or tools. Insert the MAF sensor assembly into the intake tract using the supplied silicone coupler and clamps, ensuring the directional airflow arrow printed on the sensor points directly toward the engine throttle body. Secure the clamps using a 5/16" socket.
Mount Intake Tube and Couplers: Install the silicone reducer/coupler onto the throttle body inlet and secure it hand-tight with a 5/16" nut driver. Slide the intake tube into the throttle body coupler, then align the opposite end with the MAF sensor coupler. Adjust the tube for maximum clearance away from the upper radiator hose and accessory drive pulleys, then torque all worm-gear clamps down firmly (snug, do not overtighten to avoid crushing the intake tube).
Install the High-Flow Air Filter: Slide the conical high-flow filter onto the intake adapter inside the heat shield enclosure. Tighten the filter clamp securely with an 8mm or 5/16" socket. Reconnect the factory MAF wiring harness plug until you hear an audible click, then slide the gray locking tab forward into the locked position.
Reconnect Battery and Perform ECU Idle Relearn: Reattach the negative battery cable using your 10mm wrench. Start the engine, but DO NOT touch the throttle or gas pedal for at least 20 seconds. Allow the powertrain control module (PCM) to adjust to the increased unmetered baseline airflow and stabilize idle RPM before driving.

Disclaimer: This is a general guide provided for the 1999-2006 Cadillac Chevrolet GMC Escalade Avalanche Silverado Suburban Sierra Yukon 4.8L 5.3L 6.0L. Always refer to your factory service manual for exact torque specifications and safety procedures.