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Volume: 3.25 qts. over stock
Dimensions:
Click here for dimensions.
Number of Bolts: 12
PML designed this transmission pan for 2001 to 2019 Chevrolet & GMC full size trucks with the Allison 1000 5 & 6 speed automatic transmission.
Video of an installation of this pan on a 2005 Silverado 2500HD Duramax:
The Allison 5 and 6 speed transmission is found in the Silverado & Sierra 2500 & 3500 with the Duramax diesel or 8.1 liter gas engine. Typical applications are:
- 2001 to 2019 Sierra 2500HD, 8.1 V8 or Duramax Diesel
- 2001 to 2019 Silverado 2500HD, 8.1 V8 or Duramax Diesel
- 2001 to 2019 Sierra 3500 or 3500HD, 8.1 V8 or Duramax Diesel
- 2001 to 2019 Silverado 3500 or 3500HD, 8.1 V8 or Duramax Diesel
- 2007 Sierra 2500HD Classic, 8.1 V8 or Duramax Diesel
- 2007 Silverado 2500HD Classic, 8.1 V8 or Duramax Diesel
- 2007 Sierra 3500 Classic, 8.1 V8 or Duramax Diesel
- 2007 Silverado 3500 Classic, 8.1 V8 or Duramax Diesel
Please check carefully for fit and interference. Vehicle configurations vary.
2006 and 2007 H1 Hummer may have an Allison transmission but lack space for a larger transmission pan.
10 Speed, 2019 and newer: This pan will not fit the 10 speed Allison transmission. Contact us if you have a 10 speed Allison transmission at [email protected] or 310-671-4345.
Installations
2006 Silverado 2500HD
The Transmission Guy in Palmer, AK, 907-982-0077, put one of his performance transmissions with a PML pan in this 2006 2500HD Chevy Duramax truck.
Click on image to view larger.
2005 Silverado 2500HD
This is the new PML shop truck, a 2005 Duramax LS 2WD Long Bed. As soon as we got the truck, we installed our Allison transmission pan and 14 bolt rear differential cover. Installation by Torrance Transmission. Click on an image to view a larger one in a new tab or window.
Video of installation on YouTube: Installing Transmission Pan on 2005 Silverado 2500HD
1st picture: Truck
2nd picture: Differential cover
3rd picture: OEM pan
4th picture: Ground clearance still good with PML pan installed, PML pan does NOT hang down below frame
5th picture: Drain on PML pan
6th picture: PML pan installed on 2005 Duramax
2004 Silverado 2500HD
John Brown installed our Allison transmission pan on his 2004 Chevy Silverado, 2500HD Duramax. He selected the black powder coat finish. Our thanks to John for sending us the images.
Click on image to view larger.
Sun Coast Converters
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This image shows the PML transmission pan on a transmission built by Sun Coast Converters. The pan is cut-away so the picture shows the filter supports holding the filter. The filter is the shallow stock filter so the filter supports are at full height.
Gasket
The only gasket we know about for the Allison is the reusable gasket from GM, GM part number 29549684. A flexible, thin cork or cork composite gasket works best with PML pans. With the hard reusable gasket, make sure that it is clean and free of nicks or there will be a leak. You may need to file down the gasket bolt holes so the bolts do not bind and the pan seals correctly.
Some installations have used a very thin bead of silicon (RTV) instead of the gasket.
Installer must verify transmission, filter, gasket and fitment based on the individual vehicle. This information provided for reference only.
Click on image to view larger.
Included with PML Transmission Pan
PML includes a magnetic drain plug with sealing washer and new mounting bolts with each pan.
Included with PML Allison Pan, cast finish, click to view larger image
Included with PML Allison Pan, black powder coat finish, click to view larger image
Click on image to view larger.
PML Pan Drain and Optional Temperature Sending Unit Machining
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The drain for this pan is on the front side of the pan for easy access. A magnetic drain plug and all mounting bolts are included with the pan.
Optionally, PML can drill and tap a 1/8 NPT hole for a temperature sending unit. This would be for an aftermarket temperature gage. There is a custom machining charge.
The hole would be machined on the front edge of the pan, in the middle, about 4 inches from the drain. In that location, the pan has a boss on the inside of the casting
Select the option before adding pan to cart. A plug for the hole is included. The standard size is 1/8 NPT. Check your aftermarket gage to verify the thread specifications for the sending unit before ordering. Call or email if you need a different size.
Filters and Filter Supports
The transmission pan features filter supports that are an integral part of the floor.
Out of the box the filter supports are set up to work with filter part number 29542833. This filter works with the PML transmission pan on all years of the Allison transmission (2001 to 2015).
Click on an image to view larger. The pan has been cut away so you can see the filter supports and filter.
From left to right:
Inside of PML pan, showing filter supports
Filter part number 29542833
Filter 29542833 with the PML pan on a 2005 Allison transmission
Filter 29542833 with the PML pan on a 2011 Allison transmission
Our thanks to Revmax Torque Converters for the pictures and assistance.
Other filters are available. Make sure the filter sits correctly on the filter supports such that the filter will not fall out of the transmission nor will it get shoved up into valve body causing damage.
We have also heard from customers that filter part number 29537965 works best on some years, such as the 2005 Allison transmissions. PML has no experience with this filter and has not tested it with our pan.
The PML pan is a deep pan but it is NOT designed to work with what is called "the Allison deep filter".
Information about filters for reference only. Installer should verify transmission, filter, and fitment based on the individual vehicle.
PML Allison Transmission Pan and Stock Pan Compared
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