SKU:MISMMTP-DMAX-01
Mishimoto
Mishimoto Cast Aluminum Transmission Pan - Duramax Allison A1000 | 2001-2006 GMC Sierra 2500HD
Mishimoto Cast Aluminum Transmission Pan - Duramax Allison A1000 | 2001-2006 GMC Sierra 2500HD
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The Mishimoto Cast Aluminum Transmission Pan fits the 2001-2006 GMC Sierra 2500HD with the Allison 1000 transmission and adds 6.1 quarts of ATF capacity for cooler, more consistent shifts.
Product Overview
This direct-fit pan replaces the stamped factory unit with cast aluminum finished in Gunmetal Gray powder coat. Internal baffles reduce fluid sloshing and improve heat dissipation under load.
A precision-machined dovetail groove with O-ring seal eliminates messy gasket sealants. A magnetic drain plug captures metallic debris and a 1/8-inch NPT port accepts a transmission temperature sensor.
Pre-installed bolt retainers hold the fasteners in the pan during install, making this a much cleaner job under the truck.
Features & Specifications
- Fits: 2001-2006 GMC Sierra 2500HD with Allison 1000 transmission
- Adds 6.1 quarts of ATF capacity over stock pan
- Cast aluminum construction with Gunmetal Gray powder coat
- Internal baffles reduce sloshing and improve cooling
- Dovetail-style groove with O-ring seal, no gasket needed
- Magnetic drain plug captures metallic debris
- 1/8-inch NPT port for transmission temperature sensor
- Pre-installed bolt retainers hold fasteners during install
- Backed by Mishimoto Lifetime Warranty
Fitment
This part fits the following vehicles:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2005 | GMC | Sierra 2500 HD | Base |
| 2001-2002, 2006 | GMC | Sierra 2500 HD | SL |
| 2001-2006 | GMC | Sierra 2500 HD | SLE |
| 2001-2006 | GMC | Sierra 2500 HD | SLT |
| 2003-2006 | GMC | Sierra 2500 HD | WT |
Shipping & Returns
Shipping & Returns
Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.
Warranty
Warranty
All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.
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Free shipping over $250
Shipping policyFree shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.
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30-day returns
Return policyReturns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.