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SKU: 301-900-4248 | UPC: 3019004248
ATS Diesel Extra Deep Transmission Pan for Allison LCT1000/2000 - Fits 2001-2007 Chevy Silverado Sierra 2500/3500 HD
The ATS Diesel Extra Deep Transmission Pan upgrades Allison LCT1000/2000 automatics in heavy-duty GM trucks with added fluid capacity for better cooling and lubrication during towing or high-load use.
It fits 2001-2007 Chevrolet Silverado 2500 HD/3500, GMC Sierra 2500 HD/3500, Hummer H1 Alpha, and Express/Savana vans. Cast aluminum construction with fins lowers transmission temperatures to extend component life.
Key Features
- Increased Fluid Capacity: Adds 4 full quarts of ATF over stock for improved heat dissipation and lubrication under heavy loads or towing.
- Heat-Dissipating Fins: Internal and external fins increase surface area to pull heat away from fluid faster than stock pans.
- Neodymium Magnets: Two large rare-earth magnets trap ferrous metal particles to protect internals from wear.
- Magnetic Drain Plug: 1/2-inch NPT plug simplifies fluid changes and captures additional debris.
- CNC Machined Seal: Precision-machined flange ensures leak-free fit with reusable gasket included.
Product Notes
- Includes pan gasket, magnets, drain plug, and mounting hardware for complete installation.
- Cast A356-T6 aluminum for strength and corrosion resistance in demanding diesel applications.
- MPN 301-900-4248 designed specifically for Allison LCT1000/2000 transmissions.
Installation Notes
- Professional installation recommended.
- Drain old fluid, remove stock pan, clean surfaces, then torque bolts to 15-20 ft-lbs in crisscross pattern.
- Uses factory mounting holes. no modifications required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2005 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2005 | Chevrolet | Silverado 2500 HD | LT |
| 2004-2005 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2001-2005 | Chevrolet | Silverado 3500 | LS |
| 2001-2005 | Chevrolet | Silverado 3500 | LT |
| 2004 | Chevrolet | Silverado 3500 | WT |
| 2006-2007 | Chevrolet | Express 2500 | Base |
| 2006 | Chevrolet | Express 2500 | LS |
| 2006 | Chevrolet | Express 2500 | LT |
| 2006-2007 | Chevrolet | Express 3500 | Base |
| 2001-2002 | GMC | Sierra 2500 HD | Base |
| 2001-2002 | GMC | Sierra 2500 HD | SL |
| 2001-2005 | GMC | Sierra 2500 HD | SLE |
| 2001-2005 | GMC | Sierra 2500 HD | SLT |
| 2003-2005 | GMC | Sierra 2500 HD | WT |
| 2002-2005 | GMC | Sierra 3500 | Base |
| 2001-2002 | GMC | Sierra 3500 | SL |
| 2001-2005 | GMC | Sierra 3500 | SLE |
| 2001-2005 | GMC | Sierra 3500 | SLT |
| 2004-2005 | GMC | Sierra 3500 | WT |
| 2006-2007 | GMC | Savana 2500 | Base |
| 2006-2007 | GMC | Savana 3500 | Base |
| 2006 | Hummer | H1 | Alpha |
Why Choose ATS Diesel?
- Over 20 years specializing in Allison transmission upgrades for diesel trucks.
- Built with heavy-duty materials tested in racing and commercial fleets.
- Engineered in the USA for exact fit and long-term reliability.
Frequently Asked Questions
- Q: Does this pan fit 2001-2005 Chevy Silverado 2500HD LT with Allison LCT1000?
- A: Yes, it bolts directly to Allison LCT1000/2000 in all listed 2001-2007 GM HD trucks, vans, and Hummer H1 Alpha using factory holes.
- Q: What material is the pan made from?
- A: Cast A356-T6 aluminum with internal/external fins for strength, heat rejection, and corrosion resistance.
- Q: What is included and warranty details?
- A: Includes gasket, magnets, drain plug, hardware. backed by ATS Diesel limited warranty against defects.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-lined box, dimensions 24 x 16 x 8 inches
- Weight: 18 lbs shipping weight
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ATS Diesel Performance is a family-owned manufacturer specializing in heavy-duty upgrades for diesel-powered pickup trucks. Every component is designed, engineered, and built in-house to handle the demands of towing, hauling, and high-horsepower builds on Cummins, Duramax, and Powerstroke platforms.Popular UpgradesATS transmission upgrade kits are a top choice for owners who tow heavy loads or run modified engines that exceed stock transmission limits. Their exhaust manifolds improve exhaust flow and turbo spool for stronger mid-range power, while the turbocharger lineup covers both drop-in replacements and compound twin-turbo setups. Advanced electronics including boost controllers and transmission monitoring systems help keep your build reliable under load.Will ATS Diesel parts void my truck's warranty?ATS builds components to OEM-or-better standards, but adding any aftermarket performance part can affect warranty coverage depending on your dealership and specific claim. The Magnu...
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